final exam ccna 4

7/28/2019 FINAL EXAM CCNA 4

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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





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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?

a new WAN service supporting only IPv6

NAT overload to map inside IPv6 addresses to outside IPv4 addressa 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 ddress

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


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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 securitymeasures.

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


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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 webpages 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


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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


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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.


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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 jitterreduced 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.


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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?

10.1.1.2:8010.1.1.2:1234

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.


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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.

Theframe relayPVCs 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


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0/1?

VLAN 1

VLAN 2

VLAN 11VLAN 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.


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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-FiWiMAX

satellite

Metro Ethernet


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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 routeraddresses 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


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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 applicationoperating 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


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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.


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46.

Refer to the exhibit. Which data transmission technology is beingrepresented?

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.


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final exam ccna 4

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