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31/1/2014 CCNA 4 Final Exam 2013 version 1 | zeuxidis

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CCNA 4 Final Exam 2013 version 1Posted on November 26, 2013

1. What are two main components of data confidentiality? (Choose two.)

checksum

digital certificates

encapsulation

encryptionhashing

2. Which network component has the primary function of detecting and logging attacks made against

the network?

Cisco Security Agent

antivirus software scanner

intrusion detection system

intrusion prevention system

3.Refer to the exhibit. A network administrator has issued the commands that are shown on Router1

and Router2. A later review of the routing tables reveals that neither router is learning the LAN

network of the neighbor router. What is most likely the problem with the RIPng configuration?The serial interfaces are in different subnets.

The RIPng process is not enabled on interfaces.

The RIPng network command is not configured.

The RIPng processes do not match between Router1 and Router2

4. 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
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5.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

6. Which combination of authentication and Layer 2 protocol should be used to establish a link

between a Cisco and a non-Cisco router without sending authentication information in plain text?

CHAP and HDLC

CHAP and PPP

PAP and HDLC

PAP and PPP

7. 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 2 downloads larger files than company 1 downloads.

Company 2 must share the connection to the DSLAM with more clients than company 1 shares.

Company 1 is closer to the service provider than is company 2.

Company 1 has a lower volume of POTS traffic than company 2 has.

8. 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.
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9. What component of VPN technology combines message text with a key to make the message

unreadable by unauthorized receivers?

message hash

user password

RSA signature

encryption algorithm

10. 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

11. What name is given to the location where a customer network interfaces with a network that is

owned by another organization?

CPEDCE

local loop

demarcation point

12. What will be the result of adding the command ip dhcp excluded-address 10.10.4.1 10.10.4.5 to the

configuration of a local router that has been configured as a DHCP server?

Traffic that is destined for 10.10.4.1 and 10.10.4.5 will be dropped by the router.

Traffic will not be routed from clients with addresses between 10.10.4.1 and 10.10.4.5.

The DHCP server will not issue the addresses ranging from 10.10.4.1 to 10.10.4.5.

The router will ignore all traffic that comes from the DHCP servers with addresses 10.10.4.1 and 10.10.4.5

13. What functionality do access control lists provide when implementing dynamic NAT on a Cisco

router?

which addresses are allowed to be accessed from the inside network

which addresses are allowed out of the router

which addresses are assigned to a NAT pool

which addresses are to be translated

14. 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

15. An administrator is unable to receive e-mail. While troubleshooting the problem, the administrator

is able to ping the local mail server IP address successfully from a remote network and can also

successfully ping using the mail server name. At which layer of the OSI model is the problem most

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likely to be found?

physical layer

network layer

data link layer

application layer

16. Which data link layer encapsulation protocol is used by default for serial connections between two

Cisco routers?ATM

Frame Relay

HDLC

PPP

SDLC

17. 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.

18. Which statement accurately describes a role that is played in establishing a WAN connection?

ISDN and ATM are circuit-switched technologies that are used to establish on demand a path through the

service provider network.

Data link layer protocols like PPP and HDLC define how data is encapsulated for transmission across a WAN

link.

A packet-switching network establishes a dedicated circuit between nodes for the duration of the communication

session.

Frame Relay switches are normally considered to be customer premises equipment (CPE) and are maintained by

local administrators.

19. 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.

20. Which technology is used to dynamically map next hop, network layer addresses to virtual circuits

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in a Frame Relay network?

Inverse ARP

LMI

DLCI

21. A DHCP server is configured with a block of excluded addresses. What two devices would be

assigned static addresses from the excluded address range? (Choose two.)

a protocol analyzerDNS server for the network

network printer that is used by many different users

a laptop that will get a different address each time it boots up

22. Compared with IDS systems, what can IPS systems do to provide further protection of computer

systems?

detect potential attacks

stop the detected attack from executing

update OS patches for computer systemsscan computer systems for viruses and spyware

23. A company has its headquarters office in Dallas and five branch offices located in New York,

Chicago, Los Angeles, Seattle, and Atlanta. WAN links are used for communications among offices in

six sites. In planning the WAN links, the network designer is given two requirements: (1) minimize

cost and (2) provide a certain level of WAN link reliability with redundant links. Which topology

should the network designer recommend?

star

full mesh

hierarchical

partial mesh

24. 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

25. 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

26. A company is looking for a WAN solution to connect its headquarters site to four remote sites.

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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

27. What function does LCP perform in the establishment of a PPP session?

LCP brings the network layer protocols up and down.

It carries packets from several network layer protocols.

It encapsulates and negotiates options for IP and IPX.

It negotiates and sets up control options on the WAN data link.

28. An employee of XYZ corporation will begin working from home. The employee has a choice of

DSL or cable technology for WAN connectivity. Which connectivity characteristic is accurately

described?Cable transfer rates are dependent on the length of the local loop.

DSL provides a high-speed connection over existing copper phone wires.

DSL download speeds are affected by high usage in the area.

DSL service shares the same frequency range as voice calls.

Cable connectivity usually requires new fiber installed for the local loop.

29. Which option represents a best practice for applying ACLs?

Named ACLs are less efficient than numbered ACLs.

Standard ACLs should be applied inside the core layer.

ACLs applied to outbound interfaces use fewer router resources.

Extended ACLs should be applied closest to the source that is specified by the ACL.

30. 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

31. Which two configurations must be completed before an RSA key can be generated on a router?

(Choose two.)

a hostname

a domain name

the SSH version

the SSH timeouts

local authentication on the VTY lines

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32. What type of ACL can be used to force a user to authenticate to the router before accessing a

network?

standard

dynamic

reflexive

time-based

33. What is the result when the command security passwords min-length 8 is entered into a router?All new passwords are required to be a minimum of 8 characters in length.

All current passwords are now required to be a minimum of 8 characters in length.

Enable passwords must be at least 8 characters but line passwords are unaffected.

Nothing will happen until the command service password-encryption is entered. Then all future passwords must

have a minimum of 8 characters.

34. Because of a remote-procedure call failure, a user is unable to access an NFS server. At what

layer of the TCP/IP model does this problem occur?

network layerdata link layer

physical layer

application layer

35. What is the result when the command permit tcp 10.25.132.0 0.0.0.255 any eq smtp is added to a

named access control list and applied on the inbound interface of a router?

TCP traffic with a destination to the 10.25.132.0/24 is permitted.

Only Telnet traffic is permitted to the 10.24.132.0/24 network

Ttraffic from 10.25.132.0/24 is permitted to anywhere on using any port.

Traffic using port 25 from the 10.25.132.0/24 is permitted to all destinations.

36.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 the web server. What is the destination IP address of the return packet from the web

server?

10.1.1.2:1234

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172.30.20.1:1234

172.30.20.1:3333

192.168.1.2:80

37.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

38.Refer to the exhibit. Partial results of the show access-lists and show ip interface FastEthernet 0/1

commands for router Router1 are shown. There are no other ACLs in effect. Host A is unable to

telnet to host B. Which action will correct the problem but still restrict other traffic between the two

networks?

Apply the ACL in the inbound direction.

Apply the ACL on the FastEthernet 0/0 interface.

Reverse the order of the TCP protocol statements in the ACL.

Modify the second entry in the list to permit tcp host 172.16.10.10 any eq telnet .
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39.Refer to the exhibit. The link between the CTRL and BR_1 routers is configured as shown in theexhibit. 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.

40.Refer to the exhibit. A network administrator is trying to backup the IOS software on R1 to theTFTP server. He receives the error message that is shown in the exhibit, and cannot ping the TFTP

server from R1. What is an action that can help to isolate this problem?

Use correct source file name in the command.

Verify that the TFTP server software is running.

Make sure that there is enough room on the TFTP server for the backup.

Check that R1 has a route to the network where the TFTP server resides.

41.Refer to the exhibit. RIPv2 has been configured on all routers in the network. Routers R1 and R3

have not received any RIP routing updates. What will fix the issue?

Enable RIP authentication on R2.
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Issue the ip directed-broadcast command on R2.

Change the subnet masks to 10.11.12.0/8 and 172.16.40.0/16 on R2.

Enable CDP on R2 so that the other routers will receive routing updates.

42.Refer to the exhibit. What is placed in the address field in the header of a frame that will travel

from the Orlando router to the DC router?

DLCI 123

DLCI 321

10.10.10.25

10.10.10.26

MAC address of the DC router

43.Refer to the exhibit. What is the meaning of the term dynamic in the output of the command?

The bandwidth capability of the interface increases and decreases automatically based on BECNs.

The Serial0/0/1 interface acquired 172.16.3.1 from a DHCP server.

The mapping between DLCI 100 and 172.16.3.1 was learned through Inverse ARP.

DLCI 100 will automatically adapt to changes in the Frame Relay cloud.

44.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
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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

45.Refer to the exhibit. The corporate network that is shown has been assigned network

172.16.128.0/19 for use at branch office LANs. If VLSM is used, what mask should be used for

addressing hosts at Branch4 with minimal waste from unused addresses?

/19

/20

/21

/22

/23

/24

46.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
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47.Refer to the exhibit. Users who are connected to R1 report that they are unable to establish

connectivity to the users who are connected to router R2. A network administrator tests the link with

the debug ppp authentication command. Based on the output shown, which statement correctly defines

the problem on the link?

R1 uses PAP as a method of authentication, and R2 uses CHAP.

R1 uses CHAP as a method of authentication, and R2 uses PAP.

R1 uses an incorrect user name or password for CHAP authentication.

R2 uses an incorrect user name or password for PAP authentication.

48.Refer to the exhibit. The network administrator creates a standard access control list to prohibit

traffic from the 192.168.1.0/24 network from reaching the Internet. The access list must still permit

the 192.168.1.0/24 network access to the 192.168.2.0 network. On which router interface and in which

direction should the access control list be applied?interface Fa0/0, inbound

interface Fa0/0, outbound

interface S0/0/0, inbound

interface S0/0/0, outbound

49. 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.

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50. 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

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