Ccna 4 Final 2012

ccna 4 final 2012

December 11, 2011 by admin · 14 Comments

ccna 4 final 2012 (95%)

EWAN Final Exam – CCNA Exploration: Accessing the WAN (Version 4.0) 1

Refer to the exhibit. Communication between two peers has failed. Based on the output that is shown, what is the

most likely cause?

ccna 4 final 2012

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?

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ccna 4 final 2012

frame-relay interface-dlci 103 on Serial 0/0/0.1




frame-relay map ip 192.168.1.1 103 broadcast on Serial 0/0/0.1




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?

ccna 4 final 2012

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.


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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?

ccna 4 final 2012

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






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.

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