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Assessment System

1. Assessment Selection 2. Assessment Settings 3. Take Assessment

Take Assessment - EWAN Final Exam - CCNA Explorat ion: Acc ess ing t he WAN (Vers ion 4.0)

Time Remain ing:

1

Refer to the exhibit. What would be the result of entering the exhibited configuration on a Frame Relay router?

The local interface DLCI will be set to 102.

All traffic that is destined to 172.16.16.8 will be sent as broadcast.Only broadcast traffic will be recieved on the Frame Relay interface.

Routing protocol multicast updates can be forwarded across the Frame Relay PVC.

2 A network administrator has moved the company intranet web server from a switch port to a dedicated router interface. How can the

administrator determine how this change has affected performance and availability on the company intranet?

Conduct a performance test and compare with the baseline that was established previously.

Determine performance on the intranet by monitoring load times of company web pages from remote sites.

Interview departmental administrative assistants and determine if they think load time for web pages has improved.

Compare the hit counts on the company web server for the current week to the values that were recorded in previous weeks.

3 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

4 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.

5 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

6 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.

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Refer to the exhibit. A network administrator is attempting to configure a Frame Relay network. The administrator enters the commandsas 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 f rame- re lay m ap commands are missing the c i sco keyword at the end.

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

10 What are two major characteristics of a worm? (Choose two.)

exploits known vulnerabilities

attaches itself to another program

executed by a predefined time or event

masquerades as an accepted program

copies itself to the host and selects new targets

11

Refer to the exhibit. A network administrator is considering updating the IOS on Router1. What version of IOS is currently installed on

Router1?

1

12.4

15

1841

12 Which two functions are provided by the Local Management Interface (LMI) that is used in Frame Relay networks? (Choose two.)

simple flow control

error notification

congestion notification

mapping of DLCIs to network addresses

exchange of information about the status of virtual circuits

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13 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

14 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.

15 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.

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16

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 c l o c k r a t e command.

Issue a no shu tdow n interface command on RB.

17 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.

18 What are three attributes of a security policy? (Choose three.)

It provides step-by-step procedures to harden routers and other network devices.

It defines acceptable and unacceptable use of network resources.

It focuses primarily on attacks from outside of the organization.

It defines a process for managing security violations.

It should not need to be altered once implemented.It creates a basis for legal action if necessary.

19

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Refer to the exhibit. A network administrator has been asked to configure PPP with CHAP authentication over the serial link between

routers R1 and R2. What additional configuration should be included on both routers to complete the task?

20 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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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

22 What course of action will ensure data confidentiality?

Protect data from eavesdropping.

Guarantee that no alterations are made to the data.

Ensure that only authorized users may save the data.

Prevent unauthorized users from logging into the data network.

23 What can a network administrator do to recover from a lost router password?

use the copy t f t p : f lash : command

boot the router to bootROM mode and enter the b command to load the IOS manually

telnet from another router and issue the show runn ing-conf ig command to view the password

boot the router to ROM monitor mode and configure the router to ignore the startup configuration when it initializes

24 Which additional functionality is available on an interface when the encapsulation is changed from HDLC to PPP?

flow control

error control

authentication

synchronous communication

25 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.

26 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.

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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.

27

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 d i rec ted-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.

28

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 au then t i ca t i on 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.

29 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

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PAP and PPP

30 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

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31 Which statement is true about wildcard masks?

Inverting the subnet mask will always create the wildcard mask.

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

A network or subnet bit is identified by a "1" in the wildcard mask.

IP address bits that must be checked are identified by a "0" in the wildcard mask.

32 What type of malicious software typically attaches to another program and requires human intervention to spread?

virus

worm

logic bomb

Trojan horse

33 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

HDLCISDN

Frame Relay

34 A technician has been asked to run Cisco SDM one-step lockdown on the router of a customer. What will be the result of this process?

Traffic is only forwarded from SDM-trusted Cisco routers.

Security testing is performed and the results are saved as a text file stored in NVRAM.

The router is tested for potential security problems and any necessary changes are made.

All traffic entering the router is quarantined and checked for viruses before being forwarded.

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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 action can help to isolate this problem?

Check that R1 has a route to the 10.10.10.0 network.

Verify that the TFTP server software supports binary file transfers.

Make sure that the TFTP server has 192.168.1.1 as its default gateway.

Ensure that the laptop has an IP address in the 192.168.1.0/24 network.

36

Refer to the exhibit. Which statement about the configuration is true?

10.10.10.1 is most likely assigned to the local LAN interface.

10.10.10.1 through 10.10.10.255 is available to be assigned to users.

All DHCP clients looking for an IP address will use 10.10.10.1 and 10.10.10.2.

All DHCP clients in the 10.10.10.0/24 network will use 10.10.10.2 as the default gateway.

37 Which Frame Relay flow control mechanism is used to signal routers that they should reduce the flow rate of frames?

DE

BE

CIRFECN

CBIR

38 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 successfully resolve the mail server name to an IP address via the use of the

ns lookup command. At what OSI layer is the problem most likely to be found?

physical layer

data link layer

network layer

application layer

39 Which statement is true of DSL?

It is typically deployed in a mesh topology.

The network is shared using a logical bus topology.

Bandwidth is dependent on the number of concurrent users.

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Transfer rates are dependent on the length of the local loop.

40 Which WAN connection type uses a fixed-length 53 byte cell for transmitting data?

ATM

X.25

ISDN

Frame Relay

41

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 source IP address of the return packet from the web server when received at the NIC on host A?

10.1.1.2:1234

172.30.20.1:1234

172.30.20.1:3333

192.168.1.2:80

42 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

43 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

44 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

45 Why is serial communication preferred over parallel communication for long distance WAN links?

Serial cables contain a single wire, resulting in faster transmission speeds.

Serial cables can take advantage of clock skew to increase the rate of transmission.

Parallel cables are more susceptible to crosstalk, resulting in more retransmissions.

Parallel cables send a single bit at a time making them slower than serial cables.

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46

Refer to the exhibit. ACL 120 is configured to allow traffic coming from 192.168.10.0/24 network to go to any destination limited to ports

80 and 443. ACL 130 should allow only requested HTTP traffic to flow back into the network. What additional configuration is needed in

order for the access lists to fulfill the requirements?

47

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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.

48

Refer to the exhibit. From the output of the show in te r face commands, at which OSI layer is a fault indicated?application

transport

network

data link

physical

49 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.

50 Which wildcard mask would specify all IP addresses from 192.168.8.0 through 192.168.15.255?

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0.0.0.7

0.0.7.255

0.0.8.255

0.0.15.255

0.0.255.255

51

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

52

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 acc ess-l i s t 201 deny icm p 192.168.1 .0

0.0.0.255 a ny 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 acc ess-l i s t 101 permi t ip any any command.

The router matches the incoming packet to the statement that was created by the acc ess-l i s t 101 permi t 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 the acc ess-l i s t 201 permi t ip any any command and

allows the packet into the router.

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