CNA 4 Final Exam 2011 Answers Updated

May 16, 2011 by admin · 16 Comments

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CCNA 4 Final Exam 2011 Answers Updated

1

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.

2

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

3

A technician is talking to a colleague at a rival company and comparing

DSLtransfer 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.

4

Refer to the exhibit. A network administrator is creating a prototype to

verify the new WAN design. However, the communication between the two

routers cannot be established. Based on the output of the commands, what

can be done to solve the problem?

Replace the serial cable .

Replace the WIC on RA.

Configure RA with a clock rate command.

Issue a no shutdown interface command on RB.

5

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.

6

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

checksum

digital certificates

encapsulation

encryption

hashing

7

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

8

Refer to the exhibit. A network technician has been called in to resolve a

problem with this network segment. The symptoms include a loss of

connectivity throughout the network segment, high link utilization, and

syslog messages that indicate constant MAC address relearning. What is

the likely cause of these symptoms?

cable fault

faulty NIC card

IP addressing error

spanning tree problem

NAT configuration error

9

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

10

Refer to the exhibit. To reach R2, and for configuring Frame Relay on the

point-to-point interfaces shown in the graphic, which DLCI should be used

inthe frame-relay interface-dlci command that is issued on R1?

100

101

200

201

11

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.

12

Refer to the exhibit. Which two actions are described by the output of the

debug ip nat command? (Choose two.)

A packet from 192.168.1.2 has been translated using NAT overload.

The * indicates that the NAT translation was unsuccessful and the packet was dropped.

A packet from 192.31.7.2 has been translated by NAT and forwarded to a destination

address of 198.133.219.2.

A packet from 192.31.7.2 has been sent to 198.133.219.2, which was then translated to

the destination 192.168.1.2

A packet from 192.168.1.2 has been translated by NAT to a source address of

198.133.219.2 and forwarded to the destination 192.31.7.2.

13

Refer to the exhibit. A technician issues the show interface s0/0/0

command on R1 while troubleshooting a network problem. What two

conclusions can be determined by from the output shown? (Choose two.)

The bandwidth has been set to the value of a T1 line.

This interface should be configured for PPP encapsulation.

There is no failure indicated in an OSI Layer 1 or Layer 2.

The physical connection between the two routers has failed.

The IP address of S0/0/0 is invalid, given the subnet mask being used.

14

Which Layer 2 access method separates traffic into time slots and is

specified by DOCSIS for use with cable high speed Internet service?

TDMA

FDMA

CDMA

S-CDMA

15

Refer to the exhibit. Which data transmission technology is being

represented?

TDM

PPP

HDLC

SLIP

16

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.

17

What is a common use of a TFTP server?

to allow access to restricted system resources

to detect attacks against a network and send logs to a management console

to provide active defense mechanisms that prevent attacks against the network

to perform IOS image and configuration uploads and downloads over the network

18

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.

19

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.

20

After troubleshooting a LAN, a network technician has determined that

network performance has been severely impacted by the attenuation of the

bit stream. Which physical layer condition led the technician to this

conclusion?

There is an excessive amount of EMI on the physical media.

The amplitude of the physical layer data has been significantly reduced.

There is an open conductor between the endpoints on the physical media.

The maximum allowed clock rate on the physical media has been exceeded.

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

Which two statements are true about creating and applying access lists?

(Choose two.)

One access list per port, per protocol, per direction is permitted.

Access list entries should filter in the order from general to specific.

Statements are processed sequentially from top to bottom until a match is found.

The term “inbound” refers to traffic entering 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.

23

A network technician wants to implement SSH as the means by which a

router may be managed remotely. What are two procedures that the

technician should use to successfully complete this task? (Choose two.)

Configure the login banner.

Configure authentication.

Define the asymmetrical keys.

Configure the console password.

Enter the service password-encryption command.

24

Which two protocols in combination should be used to establish a link

with secure authentication between a Cisco and a non-Cisco router?

(Choose two.)

HDLC

PPP

SLIP

PAP

CHAP

25

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.

26

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

27

Refer to the exhibit. Which statement is true about the Frame Relay

connection?

The Frame Relay connection is in the process of negotiation.

A congestion control mechanism is enabled on the Frame Relay connection.

The “ACTIVE” status of the Frame Relay connection indicates that the network is

experiencing congestion.

Only control FECN and BECN bits are sent over the Frame Relay connection. No data

traffic traverses the link.

28

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.

29

An administrator attempts to telnet into a remote device and receives the

error “Password required but none set”. How can the administrator

resolve this issue?

Set the enable secret command on the remote router.

Set the login command on the vty lines on the remote router.

Set the password command on the vty lines on the remote router.

Enable the service password-encryption command on the remote router.

30

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.

31

Which additional functionality is available on an interface when the

encapsulation is changed from HDLC to PPP?

flow control

error control

authentication

synchronous communication

32

Refer to the exhibit. A technician is teaching a trainee to interpret the

results of various Frame Relay troubleshooting commands. What

conclusion can be drawn from the output that is shown?

Neighboring routers should use DLCI 177 to reach the Branch router.

DLCI 177 will be used to identify all broadcasts that are sent out the Branch router.

The Branch router has the address 192.168.3.1 configured for the S0/0/0 interface.

To reach 192.168.3.1, the Branch router will use the virtual circuit that is identified by

DLCI 177.

33

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

34

A network administrator uses the 3DES algorithm to encrypt traffic that

crosses a VPN. Which VPN characteristic is being configured?

authentication

authorization

data integrity

data confidentiality

35

Which statement is true about wildcard masks?

A wildcard mask must be created by inverting the subnet mask.

A wildcard mask performs the same function as a subnet mask.

A wildcard mask of 0.0.0.0 means the address should match exactly.

A wildcard mask uses a “1″ to identify IP address bits that must be checked.

36

Refer to the exhibit. What statement is true about the core router devices?

They use multiport internetworking devices to switch traffic such as Frame Relay,

ATM, or X.25 over the WAN.

They provide internetworking and WAN access interface ports that are used to connect

to the service provider network.

They provide termination for the digital signal and ensure connection integrity through

error correction and line monitoring.

They support multiple telecommunications interfaces of the highest speed and are able

to forward IP packets at full speed on all of those interfaces.

37

When NAT is in use, what is used to determine the addresses that can be

translated on a Cisco router?

access control list

routing protocol

inbound interface

ARP cache

38

A network administrator is instructing a technician on best practices for

applying ACLs. Which suggestion should the administrator provide?

Named ACLs are less efficient than numbered ACLs.

Standard ACLs should be applied closest to the core layer.

ACLs applied to outbound interfaces are the most efficient.

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

39

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

40

When configuring a Frame Relay connection, what is the purpose of

Inverse ARP?

to assign a DLCI to a remote peer

to disable peer requests from determining local Layer 3 addresses

to negotiate LMI encapsulations between local and remote Frame Relay peers

to create a mapping of DLCI to Layer 3 addresses that belong to remote peers

41

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

42

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

43

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.

44

An administrator learns of an e-mail that has been received by a number

of users in the company. This e-mail appears to come from the office of the

administrator. The e-mail asks the users to confirm their account and

password information. Which type of security threat does this e-mail

represent?

cracking

phishing

phreaking

spamming

45

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.

46

Which encapsulation protocol when deployed on a Cisco router over a

serial interface is only compatible with another Cisco router?

PPP

SLIP

HDLC

Frame Relay

47

What name is given to the location where a customer network interfaces

with a network that is owned by another organization?

CPE

DCE

local loop

demarcation point

48

Refer to the exhibit. Which option displays the correct ACL that would

need to be applied inbound on the S0/0/0 interface on R2 in order to

permit any type of network traffic and block all FTP traffic coming from

hosts on the 172.16.10.0/24 network going to the Internet?

49

Refer to the exhibit. A network administrator is trying to backup the IOS

software on R1 to the TFTP 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.

50

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.

51

Which characteristic of VPN technology prevents the contents of data

communications from being read by unauthorized parties?

QoS

latency

reliability

confidentiality

52

Which configuration on the vty lines provides the best security measure

for network administrators to remotely access the core routers at

headquarters?

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.

4. Which option correctly defines the capacity through the local loop guaranteed to a

customer by the service provider?

BE

DE

CIR

CBIR

5.

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 10.1.1.1". What is the problem?

The 10.1.1.1 address is already configured on Fa0/0.

The default router for the 10Network pool is incorrect.

The ip helper-address must be added to Fa0/0 interface.

The pool of addresses for the 10Network pool is incorrect.

6. Which data link layer encapsulation protocol is used by default for serial connections

between two Cisco routers?

ATM

Frame Relay

HDLC

PPP

SDLC

7.

Refer to the exhibit. Which statement correctly describes how Router1 processes an

FTP request that enters interface s0/0/0 and is destined for an FTP server at IP address

192.168.1.5?

The router matches the incoming packet to the statement that was created by

the access-list 201 deny icmp 192.168.1.0 0.0.0.255 any command, continues

comparing the packet to the remaining statements in ACL 201 to ensure that no

subsequent statements allow FTP, and then the router drops the packet.

The router reaches the end of ACL 101 without matching a condition and drops the

packet because there is no statement that was created by the access-list 101 permit

ip any any command.

The router matches the incoming packet to the statement that was created by

the access-list 101 permit ip any 192.168.1.0 0.0.0.255 command and allows the

packet into the router.

It matches the incoming packet to the statement that was created by theaccess-list

201 permit ip any any command and allows the packet into the router.

8. 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 systems

scan computer systems for viruses and spyware

9. Which IEEE 802.16 broadband wireless technology allows users to connect to the

ISP at speeds comparable to DSL and cable?

Wi-Fi

satellite

WiMAX

Metro Ethernet

10. 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.

11.

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.

12. 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

13. Which two statements are true about IPv6 link local addresses? (Choose two.)

They begin with the 2000::/3 prefix.

They begin with the FE80::/10 prefix.

They are assigned by IANA to an organization.

They must be manually configured by the administrator.

They are assigned to a host by a stateless autoconfiguration process.

14. 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

15.

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

16. What are two effective measures for securing routers? (Choose two.)

Protect all active router interfaces by configuring them as passive interfaces.

Configure remote administration through VTY lines for Telnet access.

Use quotes or phrases to create pass phrases.

Disable the HTTP server service.

Enable SNMP traps.

17. An issue of response time has recently arisen on an application server. The new

release of a software package has also been installed on the server. The configuration

of the network has changed recently. To identify the problem, individuals from both

teams responsible for the recent changes begin to investigate the source of the

problem. Which statement applies to this situation?

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.

Only results from the software package should be tested as the network is designed to

accommodate the proposed software platform.

18.

Refer to the exhibit. From the output of the show interfaces and pingcommands, at

which layer of the OSI model is a fault indicated?

application

transport

network

data link

physical

19. Which technology is used to dynamically map next hop, network layer addresses

to virtual circuits in a Frame Relay network?

Inverse ARP

LMI

DLCI

FECN

20. An administrator learns of an e-mail that has been received by a number of users

in the company. This e-mail appears to come from the office of the administrator. The

e-mail asks the users to confirm their account and password information. Which type

of security threat does this e-mail represent?

cracking

phishing

phreaking

spamming

21.

Refer to the exhibit. Which data transmission technology is being represented?

TDM

PPP

HDLC

SLIP

22.

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.

23. What is the result of adding the global command service password-

encryption to the configuration of a router?

Line passwords are encrypted with type 7 encryption.

Enable passwords are encrypted with type 5 encryption.

All services must provide an encrypted password to function.

Only encrypted messages are allowed for router communication.

24. 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

25. Where does a service provider assume responsibility from a customer for a WAN

connection?

local loop

DTE cable on router

demarcation point

demilitarized zone

26. 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.

27.

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 .

28.

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

29.

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.

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.

30.

Refer to the exhibit. This serial interface is not functioning correctly. Based on the

output shown, what is the most likely cause?

improper LMI type

interface reset

PPP negotiation failure

unplugged cable

31. 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.

32. 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.

33. What is tunneling?

using digital certificates to ensure that data endpoints are authentic

creating a hash to ensure the integrity of data as it traverses a network

using alternate paths to avoid access control lists and bypass security measures

encapsulating an entire packet within another packet for transmission over a network

34. Which statement is true about NCP?

Link termination is the responsibility of NCP.

Each network protocol has a corresponding NCP.

NCP establishes the initial link between PPP devices.

NCP tests the link to ensure that the link quality is sufficient.

35.

Refer to the exhibit. A network administrator is creating a prototype to verify the new

WAN design. However, the communication between the two routers cannot be

established. Based on the output of the commands, what can be done to solve the

problem?

Replace the serial cable .

Replace the WIC on RA.

Configure RA with a clock rate command.

Issue a no shutdown interface command on RB.

36.

Refer to the exhibit. Based on the output as shown, which two statements correctly

define how the router will treat Telnet traffic that comes into interface FastEthernet

0/1? (Choose two).

Telnet to 172.16.10.0/24 is denied.

Telnet to 172.16.20.0/24 is denied.

Telnet to 172.16.0.0/24 is permitted.

Telnet to 172.16.10.0/24 is permitted.

Telnet to 172.16.20.0/24 is permitted.

37. Which Frame Relay flow control mechanism is used to signal routers that they

should reduce the flow rate of frames?

DE

BE

CIR

FECN

CBIR

38.

Refer to the exhibit. A network administrator configures a standard access control list

on Router1 to prohibit traffic from the 192.168.0.0/24 network from reaching the

Internet. The access control list also permits traffic from the 192.168.0.0/24 network

to reach the 192.168.1.0/24 network. On which 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

39. Which configuration on the vty lines provides the best security measure for

network administrators to remotely access the core routers at headquarters?

Answer: 3nd option

40.

Refer to the exhibit. What can be concluded from the exhibited output of thedebug ip

nat command?

The 10.1.1.225 host is exchanging packets with the 192.168.0.10 host.

The native 10.1.200.254 address is being translated to 192.168.0.10.

The 192.168.0.0/24 network is the inside network.

Port address translation is in effect.

41. A network administrator is instructing a technician on best practices for applying

ACLs. Which suggestion should the administrator provide?

Named ACLs are less efficient than numbered ACLs.

Standard ACLs should be applied closest to the core layer.

ACLs applied to outbound interfaces are the most efficient.

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

42.

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

43. Which three physical network problems should be checked when a bottom-up

troubleshooting approach has been chosen to troubleshoot network performance?

(Choose three.)

cable connectivity

high collision counts

STP failures and loops

address mapping errors

high CPU utilization rates

excess packets that are filtered by the firewall

44.

Refer to the exhibit. A network administrator is attempting to configure a Frame Relay

network. The administrator enters the commands as shown in the exhibit on R2, but

the Frame Relay PVCs are inactive. What is the problem?

The incorrect DLCI numbers are being configured on R2.

The S0/0/0 interface on R2 needs to be point-to-point.

The frame-relay map commands are missing the cisco keyword at the end.

A single router interface cannot connect to more than one Frame Relay peer at a time.

45. Which IP address and wildcard mask would be used in an ACL to block traffic from

all hosts on the same subnet as host 192.168.16.43/28?

access-list 10 deny 192.168.16.0 0.0.0.31

access-list 10 deny 192.168.16.16 0.0.0.31

access-list 10 deny 192.168.16.32 0.0.0.16

access-list 10 deny 192.168.16.32 0.0.0.15

access-list 10 deny 192.168.16.43 0.0.0.16

46. 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

47. When would the multipoint keyword be used in Frame Relay PVCs configuration?

when global DLCIs are in use

when using physical interfaces

when multicasts must be supported

when participating routers are in the same subnet

48. A network technician analyzes the network and notices late collisions. The

collisions occur accompanied by jabber that originates from the server. What is the

likely cause of the problem?

faulty switch port

web server CPU overload

faulty NIC in the web server

misconfiguration of web server services

49.

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

172.30.20.1:1234

172.30.20.1:3333

192.168.1.2:80

50.

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.

51. 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

52. A network administrator is tasked with maintaining two remote locations in the

same city. Both locations use the same service provider and have the same service

plan for DSL service. When comparing download rates, it is noticed that the location on

the East side of town has a faster download rate than the location on the West side of

town. How can this be explained?

The West side has a high volume of POTS traffic.

The West side of town is downloading larger packets.

The service provider is closer to the location on the East side.

More clients share a connection to the DSLAM on the West side.