Ccna final exam - java, php, javascript, ios, cshap all in one: CCNA4

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Tuesday, May 22, 2012

ccna 4 final 2012

1
Refer to the exhibit. Communication between two peers has failed. Based on the output that is shown, what is the most likely cause?
interface reset
unplugged cable
improper LMI type
PPP negotiation failure

2
Refer to the exhibit. A network administrator is tasked with completing the Frame Relay topology that interconnects two remote sites. How should the point-to-point subinterfaces be configured on HQ to complete the topology?
frame-relay interface-dlci 103 on Serial 0/0/0.1
frame-relay interface-dlci 203 on Serial 0/0/0.2
frame-relay interface-dlci 301 on Serial 0/0/0.1
frame-relay interface-dlci 302 on Serial 0/0/0.2
frame-relay map ip 192.168.1.1 103 broadcast on Serial 0/0/0.1
frame-relay map ip 192.168.2.2 203 broadcast on Serial 0/0/0.2
frame-relay map ip 192.168.1.1 301 broadcast on Serial 0/0/0.1
frame-relay map ip 192.168.2.2 302 broadcast on Serial 0/0/0.2

3
Which data link layer encapsulation protocol is used by default for serial connections between two Cisco routers?
ATM
Frame Relay
HDLC
PPP
SDLC

4
Refer to the exhibit. Company ABC expanded its business and recently opened a new branch office in another country. IPv6 addresses have been used for the company network. The data servers Server1 and Server2 run applications which require end-to-end functionality, with unmodified packets that are forwarded from the source to the destination. The edge routers R1 and R2 support dual stack configuration. What solution should be deployed at the edge of the company network in order to successfully interconnect both offices?
a new WAN service supporting only IPv6
NAT overload to map inside IPv6 addresses to outside IPv4 address
a manually configured IPv6 tunnel between the edge routers R1 and R2
static NAT to map inside IPv6 addresses of the servers to an outside IPv4 address and dynamic NAT for the rest of the inside IPv6 addresses

5
Which variable is permitted or denied by a standard access control list?
protocol type
source IP address
source MAC address
destination IP address
destination MAC address

6
Refer to the exhibit. The link between the CTRL and BR_1 routers is configured as shown in the exhibit. Why are the routers unable to establish a PPP session?
The clock rate must be 56000.
The usernames are misconfigured.
The IP addresses are on different subnets.
The clock rate is configured on the wrong end of the link.
The CHAP passwords must be different on the two routers.
Interface serial 0/0/0 on CTRL must connect to interface serial 0/0/1 on BR_1.

7
Which three statements accurately describe a security policy? (Choose three.)
It creates a basis for legal action if necessary.
It defines a process for managing security violations.
It defines acceptable and unacceptable use of network resources.
The remote access policy is a component of the security policy that governs acceptable use of e-mail systems.
It is kept private from users to prevent the possibility of circumventing security measures.
It provides step-by-step procedures to harden routers and other network devices.

8
A network administrator has changed the VLAN configurations on his network switches over the past weekend. How can the administrator determine if the additions and changes improved performance and availability on the company intranet?
Conduct a performance test and compare with the baseline that was established previously.
Interview departmental secretaries and determine if they think load time for web pages has improved.
Determine performance on the intranet by monitoring load times of company web pages from remote sites.
Compare the hit counts on the company web server for the current week to the values that were recorded in previous weeks.

9
Refer to the exhibit. Headquarters is connected through the Internet to branch office A and branch office B. Which WAN technology would be best suited to provide secure connectivity between headquarters and both branch offices?
ATM
VPN
ISDN
Frame Relay
broadband DSL

10
Which statement about a VPN is true?
VPN link establishment and maintenance is provided by LCP.
DLCI addresses are used to identify each end of the VPN tunnel.
VPNs use virtual Layer 3 connections that are routed through the Internet.
Only IP packets can be encapsulated by a VPN for tunneling through the Internet.

11
A company is deciding which WAN connection type it should implement between its main office and branch offices. The company wants to use a cost-effective service that provides virtual circuits between each office. The company also wants to be able to transmit variable-length packets on these circuits. Which solution best meets these requirements?
ATM
HDLC
ISDN
Frame Relay

12
A technician is talking to a colleague at a rival company and comparing DSL transfer rates between the two companies. Both companies are in the same city, use the same service provider, and have the same rate/service plan. What is the explanation for why company 1 reports higher download speeds than company 2 reports?
Company 1 only uses microfilters at branch locations.
Company 1 has a lower volume of POTS traffic than company 2 has.
Company 2 is located farther from the service provider than company 1 is.
Company 2 shares the connection to the DSLAM with more clients than company 1 shares with.

13
Refer to the exhibit. What is placed in the address field in the header of a frame that will travel from the DC router to the Orlando router?
DLCI 123
DLCI 321
10.10.10.25
10.10.10.26
MAC address of the Orlando router

14
Refer to the exhibit. This router is being configured to use SDM, but the SDM interface of the router cannot be accessed. What is the cause of the problem?
The VTY lines are not configured correctly.
The HTTP timeout policy is not configured correctly.
The authentication method is not configured correctly.
The username and password are not configured correctly.

15
Which two devices can be used by teleworkers who need to connect to the company network across the PSTN for a few hours a day? (Choose two.)
router
CSU/DSU
DSL modem
cable modem
access server
dialup modem

16
An administrator is configuring a dual stack router with IPv6 and IPv4 using RIPng. The administrator receives an error message when trying to enter the IPv4 routes into RIPng. What is the cause of the problem?
When IPv4 and IPv6 are configured on the same interface, all IPv4 addresses are over-written in favor of the newer technology.
Incorrect IPv4 addresses are entered on the router interfaces.
RIPng is incompatible with dual-stack technology.
IPv4 is incompatible with RIPng.

17
What is the function of an intrusion detection system on a network?
to restrict access to only authorized users
to detect attacks against a network and send logs to a management console
to prevents attack against the network and provide active defense mechanisms
to detect and prevent most viruses and many Trojan horse applications from spreading in the network

18
Refer to the exhibit. All devices are configured as shown in the exhibit. PC1 is unable to ping the default gateway. What is the cause of the problem?
The default gateway is in the wrong subnet.
STP has blocked the port that PC1 is connected to.
Port Fa0/2 on S2 is assigned to the wrong VLAN.
S2 has the wrong IP address assigned to the VLAN30 interface.

19
When Frame Relay encapsulation is used, what feature provides flow control and exchanges information about the status of virtual circuits?
LCP
LMI
DLCI
Inverse ARP

20
A system administrator must provide Internet connectivity for ten hosts in a small remote office. The ISP has assigned two public IP addresses to this remote office. How can the system administrator configure the router to provide Internet access to all ten users at the same time?
Configure DHCP and static NAT.
Configure dynamic NAT for ten users.
Configure static NAT for all ten users.
Configure dynamic NAT with overload.

21
A company is looking for a WAN solution to connect its headquarters site to four remote sites. What are two advantages that dedicated leased lines provide compared to a shared Frame Relay solution? (Choose two.)
reduced jitter
reduced costs
reduced latency
the ability to burst above guaranteed bandwidth
the ability to borrow unused bandwidth from the leased lines of other customers

22
What will be the result of adding the command ip dhcp excluded-address 192.168.24.1 192.168.24.5 to the configuration of a local router that has been configured as a DHCP server?
Traffic that is destined for 192.168.24.1 and 192.168.24.5 will be dropped by the router.
Traffic will not be routed from clients with addresses between 192.168.24.1 and 192.168.24.5.
The DHCP server will not issue the addresses ranging from 192.168.24.1 to 192.168.24.5.
The router will ignore all traffic that comes from the DHCP servers with addresses 192.168.24.1 and 192.168.24.5.

23
Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from the DHCP server. The output of the debug ip dhcp server command shows “DHCPD: there is no address pool for 192.168.3.17?. What is the problem?
The address 192.168.3.17 address is already in use by Fa0/0.
The pool of addresses for the 192Network pool is configured incorrectly.
The ip helper-address command should be used on the Fa0/0 interface.
The 192.168.3.17 address has not been excluded from the 192Network pool.

24
Refer to the exhibit. From the output of the show interfaces and ping commands, at which layer of the OSI model is a fault indicated?
application
transport
network
data link
physical

25
What three questions can be answered using data gathered from a baseline on a new network? (Choose three.)
Are areas of the network experiencing high error rates?
Will the disaster recovery procedures work correctly?
What parts of the network have the highest volume?
Does the organization require more network technicians?
How does the network perform during peak periods?
Are there any devices working at top capacity?
What networks are the most susceptible to security attacks?

26
Which type of ACL will permit traffic inbound into a private network only if an outbound session has already been established between the source and destination?
extended
reflexive
standard
time-based

27
Refer to the exhibit. R1 is performing NAT overload for the 10.1.1.0/24 inside network. Host A has sent a packet to Web Server. What is the destination IP address of the return packet from Web Server when received at R1?
10.1.1.2:80
10.1.1.2:1234
172.30.20.1:1234
172.30.20.1:3333

28
An administrator issues the command show interfaces s0/1/0 on a router that is configured for Frame Relay. Which console output may indicate an LMI mismatch?
Serial0/1/0 is administratively down
Serial0/1/0 is up, line protocol is up
Serial0/1/0 is up, line protocol is down
Serial0/1/0 is down, line protocol is down

29
A recently patched application server is experiencing response time problems. The network on which the application server is located has been experiencing occasional outages that the network team believes may be related to recent routing changes. Network and application teams have been notified to work on their respective issues. Which statement applies to this situation?
Only results from the software package should be tested as the network is designed to accommodate the proposed software platform.
Scheduling will be easy if the network and software teams work independently.
It will be difficult to isolate the problem if two teams are implementing changes independently.
Results from changes will be easier to reconcile and document if each team works in isolation.

30
Refer to the exhibit. Branch A has a non-Cisco router that is using IETF encapsulation and Branch B has a Cisco router. After the commands that are shown are entered, R1 and R2 fail to establish the PVC. The R2 LMI is Cisco, and the R1 LMI is ANSI. The LMI is successfully established at both locations. Why is the PVC failing?
The PVC to R1 must be point-to-point.
LMI types must match on each end of a PVC.
The frame relay PVCs cannot be established between Cisco and non-Cisco routers.
The IETF parameter is missing from the frame-relay map ip 10.10.10.1 201 command.

31
Refer to the exhibit. Which VLAN will carry untagged traffic on FastEthernet 0/1?
VLAN 1
VLAN 2
VLAN 11
VLAN 12
VLAN 30
VLAN 999

32
What is an accurate description of CHAP when used with PPP on a serial connection between two routers?
A username and password are sent to the peer router, which replies with an accept or reject message.
A username and password are sent to the peer router. If these match the configuration in the peer, the peer in turn provides a username and password to the initiating router.
A challenge message is sent to the peer router, which responds with its username and a calculated value based on a shared secret. This value is then compared by the challenger to its own calculations.
An encrypted password is sent to the peer router, which decrypts it and compares it to a shared secret. If the decrypted passwords match, the peer sends the encrypted password back to the initiating router.

33
Where does a service provider assume responsibility from a customer for a WAN connection?
local loop
DTE cable on router
demarcation point
demilitarized zone

34
Refer to the exhibit. An ACL called Managers already exists on this router. What happens if the network administrator issues the commands as shown in the exhibit?
The commands are added to the end of the existing ACL.
The existing Managers ACL will be overwritten by the new ACL.
The router will output an error message and no changes will be made.
A duplicate Managers ACL will be created that will contain only the new commands.

35
Which statement is true about PAP in the authentication of a PPP session?
PAP uses a two-way handshake.
The password is unique and random.
PAP conducts periodic password challenges.
PAP uses MD5 hashing to keep the password secure.

36
Which combination of Layer 2 protocol and authentication should be used to establish a link without sending authentication information in plain text between a Cisco and a non-Cisco router?
PPP with PAP
PPP with CHAP
HDLC with PAP
HDLC with CHAP

37
Which option correctly defines the capacity through the local loop guaranteed to a customer by the service provider?
BE
DE
CIR
CBIR

38
Which wireless solution can provide mobile users with non line-of-sight broadband Internet access at speeds comparable to DSL or cable?
Wi-Fi
WiMAX
satellite
Metro Ethernet

39
Refer to the exhibit. EIGRP has been configured as a routing protocol on the network. Users on the 192.168.1.0/24 network should have full access to the web server that is connected to 192.168.3.0/24 but should not be allowed to telnet to router R3. Verifying the configuration, the network administrator realizes that users on network 192.168.1.0/24 can successfully telnet to the router. What should be done to remedy the problem?
The ACL 101 statements 10 and 20 should be reversed.
The ACL 101 should be applied on R3 VTY lines 0 4 in the inbound direction.
The ACL 101 should be applied on R3 VTY lines 0 4 in the outbound direction.
The ACL 101 should be applied on R3 Serial0/0/1 interface in the outbound direction.
The ACL 101 statement 10 should be changed to: permit ip 192.168.1.0 0.0.0.255 any

40
What does an access control list determine when used with NAT on a Cisco router?
addresses that are to be translated
addresses that are assigned to a NAT pool
addresses that are allowed out of the router
addresses that are accessible from the inside network

41
Which IP address and wildcard mask combination can be used in an ACL statement to match the 172.16.0.0/30 network?
172.16.0.0 0.0.0.1
172.16.0.0 0.0.0.3
172.16.0.0 0.0.0.7
172.16.0.0 255.255.255.252

42
Which security solution has the responsibility of monitoring suspicious processes that are running on a host and that might indicate infection of Trojan horse applications?
antivirus application
operating system patches
intrusion prevention system
Cisco Adaptive Security Appliance

43
Refer to the exhibit. A network administrator is trying to connect R1 remotely to make configuration changes. Based on the exhibited command output, what will be the result when attempting to connect to R1?
failure to connect due to Telnet not being enabled
failure to connect due to incomplete configuration for Telnet
a successful connection and ability to make configuration changes
a successful connection but inability to make configuration changes because of the absence of an enable secret password

44
Refer to the exhibit. Results of the show vlan and show vtp status commands for switches S1 and S2 are displayed in the exhibit. VLAN 11 was created on S1. Why is VLAN 11 missing from S2?
There is a Layer 2 loop.
The VTP domain names do not match.
Only one switch can be in server mode.
S2 has a higher spanning-tree priority for VLAN 11 than S1 does.

45
A technician has been asked to run the Cisco SDM one-step lockdown on a customer router. What will be the result of this process?
Traffic is only accepted from and forwarded to SDM-trusted Cisco routers.
Security testing is performed and the results are saved as a text file stored in NVRAM.
All traffic that enters the router is quarantined and checked for viruses before being forwarded.
The router is tested for any potential security problems and all recommended security-related configuration changes will be automatically applied.

46
Refer to the exhibit. Which data transmission technology is being represented?
TDM
PPP
HDLC
SLIP

47
A network administrator is instructing a technician on best practices for applying ACLs. Which two suggestions should the administrator provide? (Choose two.)
Named ACLs are less efficient than numbered ACLs.
Standard ACLs should be applied inside the core layer.
Place standard ACLs as close to the destination as possible.
ACLs applied to outbound interfaces require fewer router resources.
Extended ACLs should be applied closest to the source that is specified by the ACL.

48
Refer to the exhibit. Which configuration command would result in the output in the exhibit?
ip nat inside source static 10.1.200.254 172.16.76.3
ip nat inside source static 10.1.200.254 192.168.0.10
ip nat inside source static 172.16.76.3 10.1.200.254
ip nat inside source static 172.16.76.3 192.168.0.10
ip nat inside source static 192.168.0.10 172.16.76.3
ip nat inside source static 192.168.0.10 10.1.200.254

49
What are three important reasons to establish a network baseline? (Choose three.)
to determine the time it takes for the network to self recover from a failure
to determine which areas in the network are underutilized or overutilized
to determine the performance of the network during the normal hours of operation
to determine what thresholds should be set for the devices that need to be monitored
to determine the areas in the network which should not be included in the monitoring process
to determine the number of users whose access to network resources should be restricted

50
Which two statements are true about creating and applying access lists? (Choose two.)
There is an implicit deny at the end of all access lists.
One access list per port, per protocol, per direction is permitted.
Access list entries should filter in the order from general to specific.
The term “inbound” refers to traffic that enters the network from the router interface where the ACL is applied.
Standard ACLs should be applied closest to the source while extended ACLs should be applied closest to the destination.

51
While troubleshooting a problem with an e-mail server, an administrator observes that the switch port used by the server shows “up, line protocol up”. The administrator cannot ping the server. At which layer of the OSI model is the problem most likely to be found?
application layer
network layer
data link layer
physical layer

52
Refer to the exhibit. Router RT is not receiving routing updates from router RTA. What is causing the problem?
The ip rip authentication key-chain command specifies exam rather than test.
The name of the keystring is not the name of the neighboring router.
The key chains are given the same name on both routers.
The passive-interface command was issued for RTA.

Sunday, March 4, 2012

CCNA 4 Exam 2012

CCNA1 <== click here
CCNA2 <== click here
CCNA3 <== click here
CCNA4 <== click here
All Answer CCNA Here.

Wednesday, October 12, 2011

CCNA Exploration 4 Chapter 6 Exam Answers

1.

Refer to the exhibit. A VPN tunnel has been established between the HQ Office and the Branch Office over the public Internet. Which three mechanisms are required by the devices on each end of the VPN tunnel to protect the data from being intercepted and modified? (Choose three.)
The devices must use a dedicated Layer 2 connection.
The devices must have the VPN client software installed.
The two parties must inspect the traffic against the same ACLs.
The two parties must establish a secret key used by encryption and hash algorithms.
The two parties must agree on the encryption algorithm to be used over the VPN tunnel.
The devices must be authenticated before the communication path is considered secure.

2.
Refer to the exhibit. All users have a legitimate purpose and the necessary permissions to access the Corporate network. Based on the topology shown, which locations are able to establish VPN connectivity with the Corporate network?
Locations C, D, and E can support VPN connectivity. Locations A and B require an additional PIX Firewall appliance installed on the edge of the network.
Locations C and E can support VPN connectivity. Locations A, B, and D require an additional PIX Firewall appliance installed on the edge of the network.
Locations A, B, D, and E can support VPN connectivity. Location C requires an additional router on the edge of the network.
All locations can support VPN connectivity.

3. While monitoring traffic on a cable network, a technician notes that data is being transmitted at 38 MHz. Which statement describes the situation observed by the technician?
Data is being transmitted from the subscriber to the headend.
Data is flowing downstream.
Cable television transmissions are interfering with voice and data transmissions.
The system is experiencing congestion in the lower frequency ranges.

CCNA 4 Final Exam V4.0 2010

1. What functionality do access control lists provide in the implementation of dynamic NAT on a Cisco router?
define which addresses can be translated
define which addresses are assigned to a NAT pool
define which addresses are allowed out the router
define which addresses can be accessed from the inside network

2. Which three guidelines would help contribute to creating a strong password policy? (Choose three.)
Once a good password is created, do not change it.
Deliberately misspell words when creating passwords.
Create passwords that are at least 8 characters in length.
Use combinations of upper case, lower case, and special characters.
Write passwords in locations that can be easily retrieved to avoid being locked out.
Use long words found in the dictionary to make passwords that are easy to remember.

3. Refer to the exhibit. Every time the administrator reboots this router, the boot process ends in setup mode. What is a possible problem?
There is insufficient RAM for the IOS to load on this router.
A password recovery process should be done on this router.
The bootstrap version and the version of the IOS are different.
The IOS image is damaged and must be reloaded using tftpdnld.
The configuration register is set to ignore the startup configuration.

CCNA 4 Chapter 8

1. What combination of IP address and wildcard mask should be used to specify only the last 8 addresses in the subnet 192.168.3.32/28?
192.168.3.32 0.0.0.7
192.168.3.32 0.0.0.15
192.168.3.40 0.0.0.7
192.168.3.40 0.0.0.15

2. Excessive broadcasts are generally a symptom of a problem at which layer?
physical
data link
network
transport

3.

Refer to the exhibit. Which three pieces of information can be determined by analyzing the output shown? (Choose three.)
A carrier detect signal is present.
Keepalives are being received successfully.
Default encapsulation is used on this serial link.
Packets passing this interface cannot exceed 1 KB in size.
The reliability of this link is very low.
The LCP negotiation phase is complete.

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Friday, February 19, 2010

CCNA4 Final Exam (French)

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Saturday, January 16, 2010

All Answer CCNA1, CCNA2, CCNA3, CCNA4, CCNA Final

http://www.4shared.com/file/138281712/49a03690/CCNA1_chapter_1.html
http://www.4shared.com/file/138281721/fb8434e9/CCNA1_chapter_2_v1.html
http://www.4shared.com/file/138281726/65e0a14a/CCNA1_chapter_2_v2.html
http://www.4shared.com/file/138281738/9b43bd0c/CCNA1_chapter_3_v1.html
http://www.4shared.com/file/138281742/34d7c2d5/CCNA1_chapter_3_v2.html
http://www.4shared.com/file/138281754/c4af56a1/CCNA1_chapter_4_v1.html
http://www.4shared.com/file/138281759/ba1e2a1c/CCNA1_chapter_4_v2.html
http://www.4shared.com/file/138281768/e6344949/CCNA1_chapter_5_v1.html
http://www.4shared.com/file/138281770/f1f4f03a/CCNA1_chapter_5_v2.html
http://www.4shared.com/file/138281777/6f906599/CCNA1_chapter_6_v1.html
http://www.4shared.com/file/138281780/766cecf5/CCNA1_chapter_6_v2.html
http://www.4shared.com/file/138281789/fb05451/CCNA1_chapter_7_v1.html
http://www.4shared.com/file/138281792/8179bc98/CCNA1_chapter_7_v2.html
http://www.4shared.com/file/138281802/5be740ec/CCNA1_chapter_8_v1.html
http://www.4shared.com/file/138281811/dbf52017/CCNA1_chapter_8_v2.html
http://www.4shared.com/file/138281816/4591b5b4/CCNA1_chapter_9_v1.html
http://www.4shared.com/file/138281821/f0d873d4/CCNA1_chapter_10_v1.html
http://www.4shared.com/file/138281824/80b2875b/CCNA1_chapter_11_v1.html
http://www.4shared.com/file/138281829/fe03fbe6/CCNA2_chapter_1_v1.html
http://www.4shared.com/file/138281832/70ca132f/CCNA2_chapter_2_v1.html
http://www.4shared.com/file/138281838/901ffa31/CCNA2_chapter_2_v2.html
http://www.4shared.com/file/138281847/4fe17167/CCNA2_chapter_3_v1.html
http://www.4shared.com/file/138281852/2690b4a9/CCNA2_chapter_3_v2.html
http://www.4shared.com/file/138281857/56fa4026/CCNA2_chapter_4_v1.html
http://www.4shared.com/file/138281860/e3b38646/CCNA2_chapter_4_v2.html
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http://www.4shared.com/file/138281874/fdc5731e/CCNA2_chapter_5_v1.html
http://www.4shared.com/file/138281881/a379b5e/CCNA2_chapter_5_v2.html
http://www.4shared.com/file/138281884/7a5d6fd1/CCNA2_chapter_6_v1.html
http://www.4shared.com/file/138281888/73eb23fa/CCNA2_chapter_6_v2.html
http://www.4shared.com/file/138281889/4ec136c/CCNA2_chapter_6_v3.html
http://www.4shared.com/file/138281893/fd22cb33/CCNA2_chapter_7_v1.html
http://www.4shared.com/file/138281897/fa4f0f2a/CCNA2_chapter_7_v2.html
http://www.4shared.com/file/138281905/c441bf78/CCNA2_chapter_8_v1.html
http://www.4shared.com/file/138281910/ad307ab6/CCNA2_chapter_8_v2.html
http://www.4shared.com/file/138281913/34392b0c/CCNA2_chapter_10_v1.html
http://www.4shared.com/file/138281912/433e1b9a/CCNA2_chapter_9_v1.html
http://www.4shared.com/file/138281918/a3ebf284/CCNA2_chapter_11_v1.html
http://www.4shared.com/file/138281923/1f1478cf/CCNA3_chapter_1_v1.html
http://www.4shared.com/file/138281926/6f7e8c40/CCNA3_chapter_1_v2.html
http://www.4shared.com/file/138281935/ef6cecbb/CCNA3_chapter_2_v1.html
http://www.4shared.com/file/138281945/a02d7a7c/CCNA3_chapter_2_v2.html
http://www.4shared.com/file/138281951/be5b8f24/CCNA3_chapter_3_v1.html
http://www.4shared.com/file/138281956/203f1a87/CCNA3_chapter_3_v2.html
http://www.4shared.com/file/138281974/fc071929/CCNA3_chapter_4_v1.html
http://www.4shared.com/file/138281979/82b66594/CCNA3_chapter_4_v2.html
http://www.4shared.com/file/138281988/722949cd/CCNA3_chapter_4_v3.html
http://www.4shared.com/file/138281992/8be79192/CCNA3_chapter_5_v1.html
http://www.4shared.com/file/138281997/fb8d651d/CCNA3_chapter_5_v2.html
http://www.4shared.com/file/138282002/4741beba/CCNA3_chapter_6_v1.html
http://www.4shared.com/file/138282008/a79457a4/CCNA3_chapter_6_v2.html
http://www.4shared.com/file/138282011/c753de41/CCNA3_chapter_7_v1.html
http://www.4shared.com/file/138282012/5e5a8ffb/CCNA3_chapter_7_v2.html
http://www.4shared.com/file/138282021/ec7e8d82/CCNA4_chapter_1_v1.html
http://www.4shared.com/file/138282026/721a1821/CCNA4_chapter_2_v1.html
http://www.4shared.com/file/138282031/f565bcc3/CCNA4_chapter_3_v1.html
http://www.4shared.com/file/138282039/fbbe34f1/CCNA4_chapter_4_v1.html
http://www.4shared.com/file/138282043/542a4b28/CCNA4_chapter_5_v1.html
http://www.4shared.com/file/138282046/2440bfa7/CCNA4_chapter_7_v1.html
http://www.4shared.com/file/138282051/a33f1b45/CCNA4_chapter_8_v1.html

Saturday, December 26, 2009

CCNA4 chapter 1

This is version CCNA Semester 4 chapter 1
hope they can help you get 100/100.
good luck!

You can download here

Version1

Monday, September 28, 2009

CCNA4: Final Exam

Review Notes, v. 3.1
1.1.1 Private addressing

1.1.2 Major NAT and PAT features
Dynamic NAT is designed to map a private IP address to a public address. Any IP address from a pool of public IP addresses is assigned to a network host. Overloading, or Port Address Translation (PAT), maps multiple private IP addresses to a single public IP address. Multiple addresses can be mapped to a single address because each private address is tracked by a port number.
1.1.3 Configuring NAT and PAT
The access list must permit only those addresses that are to be translated. Remember that there is an implicit “deny all” at the end of each access list.

1.1.4 Configuring DHCP
- Typically, a DHCP server will be configured to assign much more than an IP address. Other IP configuration values such as the default gateway can be set from the DHCP configuration mode. Using the default-router command sets the default gateway.
- A default router must be defined for clients
2.1.1 WAN devices
- For digital lines, a channel service unit (CSU) and a data service unit (DSU) are required. The two are often combined into a single piece of equipment, called the CSU/DSU. The CSU/DSU may also be built into the interface card in the router.
- A modem is needed if the local loop is analog rather than digital.
- A router is commonly considered a DTE device.
2.1.2 WAN Standards
WANs use the OSI reference model, but focus mainly on Layer 1 and Layer 2.
2.2.1 ISDN
- Another common application of ISDN is to provide additional capacity as needed on a leased line connection.
- ISDN is also used as a backup in the case of a failure of the leased line.

I will post chapter 3,4 on wednesday. See you soon. if you like this post, you can bookmarks this site. and get up date.

Monday, September 14, 2009

CCNA 4 Final

1. A network administrator is asked to design a system to allow simultaneous access to the Internet for 250 users. The ISP for this network can only supply five public IPs. What can be used to accomplish this task?
routable translation
dynamic translation
static translation
• port address translation

2. The LAN attached to the Ethernet interface of the Raleigh router shown in the graphic is addressed with private IP addresses. If one public IP is assigned to the company, which commands could be used in a configuration that allows all devices with private IPs in this network to access the Internet? (Choose two.)
• ip nat inside source list 1 interface serial0 overload
ip nat outside source list 1 interface serial0 overload
ip nat inside serial0
• ip nat inside source list 1 pool Raleigh overload
ip nat inside Raleigh overload
ip inside nat source list 1 interface serial0 Raleigh

3. The command output shown in the graphic was taken from a Cisco 806 broadband router. Which kind of address translation is in effect on this router?
static
dynamic
• overload
private
public

4. Which of the following IP addresses are defined by RFC 1918 as private addresses? (Choose three.)
• 192.168.146.0/22
172.10.25.0/16
• 172.31.0.0/16
20.0.0.0/8
• 10.172.92.8/29

5. How will data be transmitted from the router to the ISP if the router has the two links shown in the graphic?
Both links will transmit data at the same rate.
1544 bits can be transmitted simultaneously from the router over the T1 line.
• Both links will transmit bits one by one.
The 56K link will transmit a maximum of 53 bits at the same time.

6. Which statements about DHCP are true? (Choose three.)
DHCP uses TCP.
DHCP uses UDP.
• DHCP sends messages to the server on port 67.
DHCP sends messages to the server on port 68.
• DHCP sends messages to the client on port 67.
• DHCP sends messages to the client on port 68.

7. Which command would be used to exclude the IP address 192.168.24.5 from the DHCP address pool on a router?
Router(dhcp-config)# ip dhcp excluded-address 192.168.24.5
Router# ip dhcp excluded-address 192.168.24.5
Router(config-excluded)# ip dhcp excluded-address 192.168.24.5
• Router(config)# ip dhcp excluded-address 192.168.24.5
Router(config)# excluded-address 192.168.24.5
Router(dhcp-config)# excluded-address 192.168.24.5

8. The WAN connection for a nationwide company with 250 offices must support constant connections to core layer services for file sharing, and occasional Internet access. Which combination of WAN technologies will meet these needs with minimum expense?
Frame Relay PVC for Internet access and ATM for file server access
Frame Relay PVC for Internet access and ISDN for file server access
ISDN for Internet access and X.25 for file server access
• ISDN for Internet access and Frame Relay PVC for file server access

9. Which command would produce the output shown in the graphic?
show ip dhcp server statistics
show ip dhcp binding
• debug ip dhcp server events
debug ip dhcp binding

10. Which of the following devices is used to establish the communications link between the customer equipment and the local loop for digital lines?
terminal adapter
modem
• CSU/DSU
PBX switch
ISDN switch
Frame Relay Switch

11. Which of the following statements are true about Frame Relay? (Choose three.)
Frame Relay operation is defined by a series of ISO standards.
• Frame Relay is a packet switched, connection-oriented, wide area network service.
Frame Relay only supports point-to-point connections.
• A router can be considered as data terminal equipment (DTE) in a frame relay system.
Frame Relay is a cell switched, connection-oriented, wide area network service.
• Frame Relay networks use a subset of the HDLC protocol to carry information.

12. ITU-T Q.921 specifies the use of which protocol for sending control and signaling messages between the router and the ISDN switch?
HDLC
IPCP
LAPB
• LAPD
NCP
SS7

13. A company needs a WAN connection that is capable of transferring voice, video, and data at a minimum data rate of 155 Mbps. Which WAN connection is the best choice?
X.25
DSL
• ATM
ISDN BRI
ISDN PRI

14. Which statement explains why basic DSL is an unpopular WAN connectivity choice for enterprise computer departments that support home users?
DSL offers insufficient bandwidth to home users.
DSL requires the installation of new cables, which is not always possible for home users.
DSL dialup connection time is too slow for business use.
• DSL has limited geographical availability.

15. When planning simple WAN connections for a small company, which feature of the three layer hierarchical model makes it a good choice for the WAN topology.
It provides for redundancy.
• It allows for easy WAN expansion in case of company growth.
It is less expensive.
It provides faster connection time.
It provides less latency and jitter.

16. Which of the following terms describes a device that will put data on the local loop?
DLCI
CO
• DCE
DTE
PRI
BRI

17. Which of the following are supported by a BRI interface on a router? (Choose two.)
• Two independent channels that can carry analog data with a bandwidth of 64 KHz.
A single 128 Kbps digital bearer channel.
Two multiplexed channels carrying digital data.
A single 64 Kbps signaling channel.
A multiplexed data channel that can only handle SS7 information.
• A 16 Kbps delta channel used for signaling purposes.

18. A network administrator has been asked to provide the network in the United States with an ISDN WAN link. The router available to provide the WAN connection is a non-modular Cisco router with two serial connections. What must be done to adapt one of the serial interfaces of this router for the ISDN connection?
Nothing. The router is already suitable.
Purchase a BRI WAN interface card to install in the router.
Purchase a U interface to install in the router.
• Purchase a TA/NT1 device to install on the router.

19 (NEED ANSWERS!!!)Which of the following is a function of a DCE device?
determines the next-hop address for a packet
• multiplexes signals from several sources
adapts information for use on a service provider's network
used to directly connect two DTEs to simulate a WAN network

20. Why would data frames be discarded in a Frame Relay network? (Choose two.)
The frame contains an incorrect IP address.
• An error has been detected in computing the frame check sequence.
There is not enough bandwidth dedicated for the data contained in the frame.
Data is transmitted at a rate greater than the access speed.
• The frame contains an incorrect DLCI.

21. Which of the following are commonly used as Data Communications Equipment? (Choose two.)
• modem
router
• CSU/DSU
ISDN Switch
Frame Relay Switch

22. Which of the following LCP options can be configured for PPP? (Choose three.)
• CHAP
• Stacker
IPCP
CDPCP
• Multilink

23. Which command will provide for CHAP authentication if the hostname on a challenging router is tampa with a password of florida?
• username tampa password florida
username tampa florida
hostname tampa password florida
hostname tampa florida

24. Which of the following describes the PAP protocol? (Choose two.)
• sends unencrypted authentication passwords
performs a three-way handshake
• allows repeated login attempts
uses the remote router hostname to verify identity
sends a random challenge throughout the session

25. Why was NAT created? (Choose two.)
to create firewalls on routers
• to conserve IP addresses
to translate domain names into IP addresses
to map network addresses to the corresponding data link address
• to hide internal addresses from external devices

26. An ISDN router is configured for DDR as shown in the graphic to provide Internet connectivity for the company. Immediately after a user in the company attempts opens a web browser to connect to the Internet, another user in the company tries to download a file using FTP. What will happen? (Choose two.)
• The user that opened the browser will connect to the Internet because the DDR link will consider this traffic interesting.
The Internet user will be disconnected because the FTP data will cause the DDR link to shut down.
The DDR link will allow the FTP traffic because it is interesting.
The DDR link will not allow the FTP traffic because it is not interesting.
The FTP connection will fail because the DDR link is already in use for the Internet connection.
• The FTP connection will succeed because the web user already opened the DDR link.

27. Which command configures the SPID on the first B channel of an ISDN interface?
Router(config)# isdn spid0 spid-number [ldn]
Router(config)# isdn spid1 spid-number [ldn]
Router(config-if)# isdn spid0 spid-number [ldn]
• Router(config-if)# isdn spid1 spid-number [ldn]

28. What does the command debug isdn q921 display?
exchange of call setup and teardown messages
PAP and CHAP authentication traffic
• Layer 2 messages on the D channel
protocol errors and statistics
Layer 2 messages on the B channel

29. When PPP authentication is enabled, which of the following may be checked before establishing a PPP link between two devices? (Choose two.)
the enable password on the remote device
the ip host configuration on the remote device
• the security server database for the username and password of the remote device
the hostname and enable password on the local device
• the local database for the username and password of the remote device

30. How many separate B channel circuits can be provisioned on a PRI interface that uses a T1 line for connectivity?
2
16
• 23
24
30
128

31. Which operating systems support multiuser capability? (Choose three.)
• Linux
Windows 98
Windows ME
• Windows XP
• Windows 2000

32. What is placed in the address field of a frame that will travel from the DC office of ABC company to the Orlando office?
MAC address of the Orlando router
MAC address of the DC router
192.168.1.25
192.168.1.26
DLCI 100
• DLCI 200

33. What does a DLCI of 0 indicate about a frame? (Choose two.)
This is the first data frame sent by the router.
• This is a management frame.
The encapsulation type is Cisco.
The encapsulation type is IETF.
• The LMI type is Ansi or q933a.
The LMI type is Cisco.

34. Which of the following protocols can be used to encapsulate data traffic sent from a router BRI interface? (Choose two.)
Link Access Protocol - Data
• High-Level Data Link Control
Logical Link Control
Serial Data Link Control
• Point to Point protocol
Binary Synchronous Control protocol

35. An administrator consoled into the Jelly router needs to telnet to the Butter router. What DLCI will the Jelly router place in the frame to perform this operation?
110
115
220
• 225

36. Which commands can be used to identify which DLCIs are active? (Choose two.)
• show frame-relay map
show frame-relay lmi
• show frame-relay pvc
show frame-relay interface
show interfaces
show ip route

37. A technician is testing the functionality of a recently installed router. The technician is unable to ping the serial interface of a remote router. The technician executes the show interface serial0/0 command on the local router and sees the following line in the output:
Serial0/0 is up, line protocol is down
What are possible causes for this command output? (Choose three.)
• remote CSU/DSU failure
serial cable missing
interface shutdown
• keepalives not being sent
• clocking signal missing

38. A router needs to forward a message received from a host. How does the router identify the correct VC to forward the message? (Choose two.)
The router forwards the frame to all ports in the network and learns the address from the reply frame.
The destination host IP address is embedded in the DLCI.
• The router searches Inverse ARP tables for maps of DLCIs to IP addresses.
• A table of static mappings can be searched.
The router broadcasts a request for the required IP address.

39. Which of the following statements regarding point-to-point subinterfaces are true? (Choose two.)
A point-to-point subinterface on one router must be connected to a similar subinterface on a remote router.
Each point-to-point subinterface connection is configured with its own subnet.
The DLCIs configured on the remote and local routers must be the same for the PVC.
LMI frames are not transmitted through a subinterface.
Routing updates in point-to-point networks are not subject to the split-horizon rule.

40. Which of the following can be concluded from the router output displayed in the graphic? (Choose two.)
• The local DLCI number of this PVC is 100.
The interface has been configured for subinterfaces and this map is for subinterface 0.
• Inverse ARP has determined the remote ip address as 10.140.1.1.
The LMI type is ANSI (0x64).
There is currently no congestion on the link.

41. Which of the following are functions of the Local Management Interface used in Frame Relay networks? (Choose three.)
• exchange information about the status of virtual circuits
map DLCIs to network addresses
• provide flow control
provide error notification
provide congestion notification
• send keepalive packets to verify operation of the PVC

42. Which of the following describe functions of the Point-to-Point protocol with regards to the OSI model? (Choose three.)
PPP uses Layer 3 of the OSI model to establish and maintain a session between devices.
PPP operates at all layers of the OSI model.
• PPP uses the data link layer to configure such options as error detection and compression.
• PPP provides a mechanism to multiplex several network layer protocols.
PPP uses Network Control Protocols (NCP) to test and maintain connectivity between devices.
• PPP can be configured on both synchronous and asynchronous serial interfaces.

43. Which of the following describes the CHAP protocol? (Choose three.)
• exchanges a random challenge number during the session to verfiy identity
sends authentication password to verify identity
• prevents transmission of login information in plain text
• disconnects the PPP session if authentication fails
initiates a two-way handshake

44. Which of the following switching types will allow the communication devices in the provider's network to be shared and only allocated to an individual subscriber during data transfer?
circuit-switched
• packet-switched
frame-switched
dedicated-switched lines
lease-switched

45. How does Frame Relay technology process frames that contain errors? (Choose two.)
• Frame Relay services depend on the upper layer protocols to handle error recovery.
It requires the receiving device to request that the sender retransmit erroneous frames.
FECN, BECN, and DE bits are set in the frames to minimize errors.
• The receiving device drops any frames that contain errors without notifying the sender.
The frame relay switch notifies the sender that errors were detected.

46. Which of the following describes the WAN devices and cabling shown in the graphic? (Choose two.)
A null-modem cable is used between RouterD and DeviceC for connectivity.
A DB-25 or DB-9 serial cable is connected to interface S0/0 of RouterA.
• DeviceB and DeviceC are DCE devices.
• The same encoding scheme must be used by DeviceB and DeviceC.
A synchronous serial connection exists between DeviceB and DeviceC.

Monday, August 17, 2009

CCNA 4 Final New version

1. Identify the factors that contribute to congestion on an Ethernet LAN. (Choose three.)
• improper placement of enterprise level servers
• addition of hosts to a physical segment
replacement of hubs with workgroup switches
• increasing use of bandwidth intensive network applications
migration to full-duplex Ethernet within the LAN

2. Which of the following are examples of TCP/IP application layer protocols? (Choose three.)
• a terminal emulation protocol that supports remote console connections with various network devices
a protocol created by IBM that makes it easier for mainframes to connect to remote offices
• a protocol responsible for transporting electronic mail on TCP/IP networks and the Internet
a protocol that controls the rate at which data is sent to another computer
• a protocol that exchanges network management information between a network device and a management console

3. Which of the following eliminates switching loops?
hold-down timers
poison reverse
• spanning tree protocol
time to live
split horizon protocol

4. The show cdp neighbors command is a very useful network troubleshooting tool. Using the output in the graphic, select the statements that are true. (Choose two.)
CDP operates at the network layer of the OSI model.
• The output of this command displays information about directly connected Cisco devices only.
The switch is attached to the SanJose1 FastEthernet0/21 interface.
SanJose1 is running CDP version 12.0.
SanJose1 has two fully operational, cdp-enabled Cisco switches directly connected to it.
• SanJose2 is a 2600 series router running several routed protocols

5. A network administrator can ping the Denver router, but gets a 'Password Required but None Set' message when trying to connect remotely via Telnet. Which command sequence must be applied to the Denver router to allow remote access?

Router(config)# line console 0
Router(config-line)# login
Router(config-line)# password cisco
• Router(config)# line vty 0 4
Router(config-line)# login
Router(config-line)# password cisco

Router(config)# line virtual terminal
Router(config-line)# enable login
Router(config-line)# password cisco

Router(config)# line vty 0 4
Router(config-line)# enable secret
Router(config-line)# password cisco
Router(config)# enable secret cisco
Router(config)# enable cisco

6. Which of the following is associated with link-state routing protocols?
low processor overhead
poison reverse
routing loops
split horizon
• shortest-path first calculations

7. A router does not load its configuration after a power failure. After running the show startup-configuration command, the adminstrator finds that the original configuration is intact. What is the cause of this problem?
The configuration register is set for 0x2100.
The configuration register is set for 0x2101.
The configuration register is set for 0x2102.
• The configuration register is set for 0x2142.
Boot system commands are not configured.
Flash memory is empty causing the router to bypass the configuration in NVRAM
Nederst på formularen

8. Which commands are used to verify the content and placement of access control lists? (Choose three.)
• show ip interface
show ip route
show processes
• show running-config
show cdp neighbor
• show access-lists

9. Which of the following are required when creating a standard access control list? (Choose two.)
destination address and wildcard mask
• source address and wildcard mask
subnet mask and wildcard mask
access list number between 100 and 199 or 2000 and 2699
• access list number between 1 and 99 or 1300 to 1999

10. Which of the following are keywords that can be used in an access control list to replace a dotted decimal wildcard mask? (Choose two.)
most
• host
all
• any
some
sum

11. Refer to the diagram. All ports on Switch A are in the Sales VLAN and all ports on Switch B are in the Accounting VLAN. How many broadcast domains and how many collision domains are shown? (Choose two).
3 collision domains
• 3 broadcast domains
5 broadcast domains
• 9 collision domains
10 collision domains
13 collision domains

12. Refer to the graphic. Using the most efficient IP addressing scheme and VLSM, which address can be configured on one of the serial interfaces?
192.168.16.63/27
192.168.16.158/27
192.168.16.192/27
192.168.16.113/30
192.168.16.145/30
• 192.168.16.193/30

13. What is the purpose of the Spanning Tree Protocol (STP)?
• prevents Layer 2 loops
prevents routing loops on a router
creates smaller collision domains
creates smaller broadcast domains
allows Cisco devices to exchange routing table updates

14. What is the purpose of a loopback address when using the OSPF routing protocol?
activates the OSPF neighboring process
• ensures a persistent router ID for the OSPF process
provides a backdoor for connectivity during the convergence process
streamlines and speeds up the convergence process

15. Which statement is true regarding states of the IEEE 802.1d Spanning Tree Protocol?
Ports are manually configured to be in the forwarding state.
• Ports listen and learn before going into the forwarding state.
Ports must be blocked before they can be placed in the disabled state.
It takes 15 seconds for a port to go from blocking to forwarding

16. Which sequence of commands is used to configure a loopback address on a router?

Router1(config)# interface loopback 1
Router1(config-if)# ip address 192.168.1.1
Router1(config)# interface serial 0/0

Router1(config-if)# loopback 1
Router1(config-if)# ip address 192.168.1.1
Router1(config)# interface serial 0/0

Router1(config-if)# loopback 1
Router1(config-if)# ip address 192.168.1.1 255.255.255.0

• Router1(config)# interface loopback 1
Router1(config-if)# ip address 192.168.1.1 255.255.255.255

17. Which routing protocols are classful and do not support VLSM? (Choose two.)
EIGRP
OSPF
• RIP v1
RIP v2
• IGRP

18. Refer to the graphic. Two switches are connected together through a trunk port. SW2 displays the message shown. Which of the following will solve the duplex mismatch?

SW1(config)# interface fastethernet 0/1
SW1(config-if)# duplex full

SW1(config)# interface fastethernet 0/1
SW1(config-if)# full-duplex

• SW2(config)# interface fastethernet 0/1
SW2(config-if)# duplex full

SW2(config)# interface fastethernet 0/1
SW2(config-if)# full-duplex

19. Refer to the graphic. Two routers have been configured to use EIGRP. Packets are not being forwarded between the two routers. What could be the problem?
EIGRP does not support VLSM.
The routers were not configured to monitor neighbor adjacency changes.
The default bandwidth was used on the routers.
• An incorrect IP address was configured on a router interface.

20. According to the the provided router output, which of the following statements is true regarding PPP operation?
Only the link-establishment phase completed successfully.
Only the network-layer phase completed successfully.
Neither the link-establishment phase nor the the network-layer phase completed successfully.
• Both the link-establishment and network-layer phase completed successfully

21. Frame Relay is configured over a point-to-point connection between two routers. The output of the show frame-relay pvc command indicates that the status of this PVC is inactive. Which of the following devices could be the source of the problem? (Choose two.)
local router
local Frame Relay switch
• remote router
• remote Frame Relay switch
R3 has the following configuration:
R3# show running-config
--some output text omitted--
interface serial0/0
bandwidth 128
ip address 192.168.11.2 255.255.255.0
encapsulation frame-relay
frame-relay map ip 192.168.11.2 30 broadcast

22. After the command R3# debug frame-relay packet is executed, a ping is issued from R3 to R1 but is unsuccessful. Based on the output of the debug command shown in the graphic and the router configuration, what might be problem?
• No clock rate assigned.
There is an incorrect DLCI number in the map statement.
An incorrect IP address exists in the map statement.
The encapsulation command is missing the broadcast keyword

23. Which statements are true regarding the Frame Relay LMI? (Choose three.)
• The LMI provides a virtual circuit (VC) status mechanism.
The LMI type must always be manually configured.
The available LMI types are NI1, DMS100 and 5ESS.
The LMI types supported by Cisco routers are CISCO and IETF.
• The LMI type configured on the router must match the one used on the Frame Relay switch.
• The LMI uses reserved DLCIs to exchange messages between the DTE and DCE

24. Which statement describes the process that occurs in Network Address Translation (NAT) overloading?
• Multiple private IP addresses are mapped to one public IP address.
The number of usable addresses assigned to a company is divided into smaller manageable groups.
A pool of IP addresses are mapped to one or more MAC addresses.
The router acts as a DHCP server and assigns multiple public IP addresses for each private IP address configured

25. Which two statements are true about the committed information rate on a Frame Relay link? (Choose two.)
The sum of the CIRs for all PVCs must be less than the port speed.
The sum of the CIRs for all PVCs must equal the port speed.
• The sum of the CIRs for all PVCs can be greater than the port speed.
• The DE bit will be set on frames that are transmitted in excess of the CIR.
Frames that are transmitted at greater than the CIR will be discarded at the source.
It is impossible to transmit frames at a rate in excess of the CIR

26. Which of the following commands would be used to troubleshoot the processing of call control functions such as call setup, signaling, and termination?
show interface bri0/0
show isdn active
debug isdn q921
• debug isdn q931
debug ppp negotiation
debug ppp authentication

27. Which of the following statements are true regarding PPP? (Choose three.)
• PPP can use synchronous and asynchronous physical media.
PPP can only be used between two Cisco devices.
PPP carries packets from several network layer protocols in LCPs.
• PPP uses LCPs to establish, configure, and test the data link connection.
• PPP uses LCPs to agree on format options such as authentication, compression, and error detection

28. A network administrator is evaluating authentication protocols for a PPP link. Which of the following reasons might lead to the selection of CHAP over PAP as the authentication protocol? (Choose three.)
establishes identities with a two-way handshake
• uses a three-way authentication periodically during the session to reconfirm identities
control by the remote host of the frequency and timing of login events
• transmits login information in encrypted format
• uses an unpredictable variable challenge value to prevent playback attacks
makes authorized network administrator intervention a requirement to establish each session

29. Why are static routes often used with ISDN DDR?
They are more stable than dynamic routing protocols.
They are more accurate than dynamic routing protocols because they are put in by a network administrator.
They are easier to modify when a faster technology is installed.
• They prevent the unnecessary activation of the link

30. Assuming that four bits have been borrowed to make subnets, identify the subnet network addresses. (Choose three.)
192.168.14.8
• 192.168.14.16
192.168.14.24
• 192.168.14.32
192.168.14.148
• 192.168.14.208

31. A switch can be configured for three different forwarding modes based on how much of a frame is received before the forwarding process begins. Each of the numbered arrows in the accompanying graphic signifies the point in a frame where a particular forwarding mode will begin. Which one of the following groups reflects the sequence of forwarding modes signified by the numbered arrows?
• 1) fast forward
2) fragment free
3) store-and-forward

1) store-and-forward
2) fragment free
3) fast forward

1) fragment free
2) fast forward
3) store-and-forward

1) fast forward
2) store-and-forward
3) fragment free

32. Which of the following commands will display a communication message on a router before the router prompt is shown?
• banner motd * Property of TLC. UNAUTHORIZED USERS WILL BE PROSECUTED TO THE FULL EXTENT OF THE LAW. *
message Property of TLC. UNAUTHORIZED USERS WILL BE PROSECUTED TO THE FULL EXTENT OF THE LAW.
banner * Property of TLC. UNAUTHORIZED USERS WILL BE PROSECUTED TO THE FULL EXTENT OF THE LAW. *
hostname (Property of TLC. UNAUTHORIZED USERS WILL BE PROSECUTED TO THE FULL EXTENT OF THE LAW.)
Øverst på formularen

33. A router needs to be added to OSPF area 0. Which commands should be used to enable OSPF on the router? (Choose two.)
RouterA(config)# router ospf
• RouterA(config)# router ospf 1
RouterA(config-router)# network 192.168.2.0 0.0.0.255 0
• RouterA(config-router)# network 192.168.2.0 0.0.0.255 area 0
RouterA(config-router)# network 192.168.2.0 255.255.255.0 0

34. Refer to the graphic. Which of the following commands will configure router A for OSPF?
router ospf 1
network 192.168.10.0

• router ospf 1
network 192.168.10.64 0.0.0.63 area 0
network 192.168.10.192 0.0.0.3 area 0

router ospf 1
network 192.168.10.64 255.255.255.192
network 192.168.10.192 255.255.255.252

router ospf 1
network 192.168.10.0 area 0

35. Which of the following protocols would exchange information between routers to share network addresses and their metrics?
TCP
• RIP
CSMA/CD
Ethernet

36. Which ISDN device can be directly connected to a two-wire local loop in a North American city?
a router with a serial interface
a router with an S/T interface
• a router with a U interface
an ISDN terminal adapter

37. The output of the show ip interfaces brief command indicates that Serial0 is up but the line protocol is down. Which of the following are possible causes for the line protocol being in the down state? (Choose two.)
The clock rate is not set on the DTE.
An incorrect default gateway is set on the router.
A network is missing from the routing protocol configuration.
• The encapsulation on the Serial0 interface is incorrect.
• Keepalives are not being sent by the remote device

38. Which of the following is a characteristics of TCP? (Choose two.)
• data transport reliability
best path determination
• establishing, maintaining, and terminating virtual circuits
encapsulation of packets in a data frame with source and destination MAC addresses
best-effort datagram delivery

39. Which statement is true regarding the command ip route 192.168.7.24 255.255.255.248 192.168.7.9? (Choose two.)
• A packet destined for host 192.168.7.30 will be forwarded to address 192.168.7.9.
192.168.7.9 is the destination network for this route.
192.168.7.24 is the next-hop router in this command.
This command is issued from the interface configuration mode.
• This command is used to define a static route

40. Which of the following application layer protocols use TCP? (Choose three.)
• SMTP
• FTP
SNMP
• HTTP
TFTP
DHCP

41. Which terms refer to Frame Relay congestion management mechanisms? (Choose three.)
• BECN
DLCI
• DE
• FECN
LMI
Inverse ARP

42. Which of the following router commands will verify that a path exists to a destination network?
Router# show ip interfaces brief
• Router# show ip route
Router# show cdp neighbors
Router# show running-config
Router# show protocols

43. When EIGRP is configured on a router, which table of DUAL information is used to calculate the best route to each destination router?
router table
• topology table
DUAL table
CAM table
ARP table

44. Refer to the graphic. Routers A and B have EIGRP configured and automatic summarization has been disabled on both routers. Which of the following commands is used on router A to summarize the attached routes, and to which interface is this command applied? (Choose two)
• ip summary-address eigrp 1 192.168.10.64 255.255.255.192
ip area-range eigrp 1 192.168.10.80 255.255.255.224
summary-address 192.168.10.80 0.0.0.31
ip summary-address eigrp 1 192.168.10.64 0.0.0.63
• serial interface on router A
serial interface on router B

45. A router with two LAN interfaces, two WAN interfaces, and two loopback interfaces configured is operating with OSPF as its routing protocol. What is used by the OSPF process to assign the router ID?
the IP address of the interface configured with priority 0
the OSPF area ID configured on the interface with the highest IP address
• the loopback with the highest IP address configured
the highest IP address on the LAN interfaces
the highest IP address configured on the WAN interfaces

46. Given the IP address and subnet mask of 172.16.134.56 255.255.255.224, on which subnetwork does this address reside?
172.0.0.0
172.16.134.0
• 172.16.134.32
172.16.134.48
172.16.134.47
172.16.134.63

47. Which commands show when the last IGRP routing update was received? (Choose two.)
• Router# show ip protocols
Router# show version
Router# show interfaces
Router# show ip updates
• Router# show ip route

48. When using access control lists to filter traffic, which of the following is used to track multiple sessions occurring between hosts?
IP addresses
subnet masks
• port numbers
routed protocols
routing protocols
interfaces

49. Given the IP address and subnet mask of 172.16.134.64 255.255.255.224, which of the following would describe this address?
This is a useable host address.
This is a broadcast address.
• This is a network address.
This is not a valid address

50. The company network shown in the drawing has to be subnetted. The company has leased the Class C IP address of 200.1.2.0. Which of the following network addresses and masks would be appropriate for one of the subnetworks?
200.1.2.96 255.255.255.192
• 200.1.2.160 255.255.255.224
200.1.2.80 255.255.255.224
200.1.2.32 255.255.255.240

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