ccna 4 final questions december 2010

8/8/2019 CCNA 4 Final Questions December 2010

1/17

CCNA 4 Final Questions December 2010CCNA 4 Final Questions December 2010Download

1Top of Form

Which data link layer encapsulation protocol is used by default for serial connectionsbetween two Cisco routers?

ATM

Frame Relay

HDLC

PPP

SDLC

Bottom of Form

2 Top of Form

A network administrator determines that falsified routing information is propagating throughthe network. What action can be used to address this threat?

Update the IOS images.

Change console passwords.

Employ end-user authentication.

Configure routing protocol authentication.

Bottom of Form

3 Top of Form

What will be the result of adding the command ip dhcp excluded-address 10.10.4.110.10.4.5 to the configuration of a local router that has been configured as a DHCP server?

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

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

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

The router will ignore all traffic that comes from the DHCP servers with addresses10.10.4.1 and 10.10.4.5.

Bottom of Form
http://hotfile.com/dl/85990895/312b7e8/ccna_4_final_12_2010.rar.htmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://hotfile.com/dl/85990895/312b7e8/ccna_4_final_12_2010.rar.html


2/17

4 Top of Form

What is an accurate description of CHAP when used with PPP on a serial connection betweentwo routers?

A username and password are sent to the peer router, which replies with an accept orreject message.

A username and password are sent to the peer router. If these match the configuration inthe 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 acalculated value based on a shared secret. This value is then compared by the challengerto its own calculations.An encrypted password is sent to the peer router, which decrypts it and compares it to ashared secret. If the decrypted passwords match, the peer sends the encrypted passwordback to the initiating router.

Bottom of Form

5 Top of Form

Technicians from Company A and Company B are comparing DSL transfer rates at their

respective companies. Both companies are in the same city, use the same service provider,and have the same rate/service plan. Company A, however, reports higher download speedsthan Company B. Which option best explains the reason for Company A having the higherdownload speeds?

Company A only uses microfilters on branch locations.

Company B has a higher volume of POTS voice traffic than does Company A.

Company B shares the connection to the DSLAM with a larger number of clients thanCompany A shares.

The length of the local loop between Company A and the CO is shorter than the length of

the local loop between Company B and CO.Bottom of Form

6 Top of Form

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.

Bottom of Form

7 Top of Form

Which option represents a best practice for applying ACLs?

Named ACLs are less efficient than numbered ACLs.
http://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtml


3/17

Standard ACLs should be applied inside the core layer.

ACLs applied to outbound interfaces use fewer router resources.

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

Bottom of Form

8 Top of Form

A technician is editing and reapplying ACL 115 to a router, what is the result of adding thecommand access-list 115 permit tcp any 172.16.0.0 0.0.255.255 established to the ACLwhen it is reapplied to the router?

All traffic that comes from 172.16.0.0/16 will be allowed.

All TCP traffic that is destined for 172.16.0.0/16 is permitted.

Any SYN packets that are sent to 172.16.0.0/16 will be permitted.

Responses to traffic that originates from the 172.16.0.0/16 network are allowed.

Bottom of Form

9 Top of Form

Refer to the exhibit. Communication between two peers has failed. Based on the output that isshown, what is the most likely cause?

interface reset

unplugged cable

improper LMI type

PPP negotiation failure

Bottom of Form

10 Top of FormWhich protocol is used to authenticate connections over serial links securely?

CHAP

HDLC

SLIP
http://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/1.shtml


4/17

PAP

Bottom of Form

11 Top of Form

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.

Bottom of Form

12 Top of Form

Which type of ACL will permit traffic inbound into a private network only if an outboundsession has already been established between the source and destination?

extended

reflexive

standard

time-based

Bottom of Form

13 Top of Form

Refer to the exhibit. Results of the show vlan and show vtp status commands for switchesS1 and S2 are displayed in the exhibit. VLAN 11 was created on S1. Why is VLAN 11missing 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.

Bottom of Form


5/17

14 Top of Form

Which IEEE 802.16 broadband wireless technology allows users to connect to the ISP atspeeds comparable to DSL and cable?

Wi-Fi

satellite

WiMAX

Metro Ethernet

Bottom of Form

15 Top of Form

Refer to the exhibit. What is another way to represent this IPv6 address?

2031::130F::9C0::130B

2031::130F::9C0:0:130B

2031:0:130F::9C0::130B

2031:0:130F::9C0:0:130B

Bottom of Form

16 Top of Form

Refer to the exhibit. What is placed in the address field in the header of a frame that willtravel from the San Jose router to the DC router?

DLCI 103

DLCI 301

172.16.1.18

172.16.1.19

Bottom of Form

17 Top of Form

Which option correctly defines the capacity through the local loop guaranteed to a customerby the service provider?


6/17

BE

DE

CIR

CBIR

Bottom of Form

18 Top of Form

Refer to the exhibit. All devices are configured as shown in the exhibit. PC1 is unable to pingthe 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.

Bottom of Form

19 Top of Form

Refer to the exhibit. R1 is performing NAT overload for the 10.1.1.0/24 inside network. HostA has sent a packet to Web Server. What is the destination IP address of the return packetfrom 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

Bottom of Form

20 Top of Form

Refer to the exhibit. Which configuration command would result in the output in the exhibit?


7/17

ip nat inside source static 10.1.200.254 172.16.76.3






Bottom of Form

21 Top of Form

Refer to the exhibit. A network administrator is creating a prototype to verify the new WANdesign. However, the communication between the two routers cannot be established. Basedon 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.

Bottom of Form

22 Top of Form

Refer to the exhibit. You are a network administrator who has been tasked with completingthe Frame Relay topology that interconnects two remote sites. How should the point-to-pointsubinterfaces be configured on HQ to complete the topology?

HQ(config-subif)# frame-relay map ip 172.16.1.1 301 broadcast on Serial 0/0/0.1

HQ(config-subif)# frame-relay map ip 172.16.2.2 302 broadcast on Serial 0/0/0.2HQ(config-subif)# frame-relay map ip 172.16.1.1 103 broadcast on Serial 0/0/0.1HQ(config-subif)# frame-relay map ip 172.16.2.2 203 broadcast on Serial 0/0/0.2

HQ(config-subif)# frame-relay interface-dlci 103 on Serial 0/0/0.1HQ(config-subif)# frame-relay interface-dlci 203 on Serial 0/0/0.2

HQ(config-subif)# frame-relay interface-dlci 301 on Serial 0/0/0.1HQ(config-subif)# frame-relay interface-dlci 302 on Serial 0/0/0.2

Bottom of Form
http://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/2.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/2.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/2.shtmlhttp://www.ccna4u.net/Data/CCNA%20Final%20S4%2011-2010/2.shtml


8/17

23 Top of Form

A recently patched application server is experiencing response time problems. The networkon which the application server is located has been experiencing occasional outages that thenetwork 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 thissituation?

Only results from the software package should be tested as the network is designed toaccommodate 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 changesindependently.

Results from changes will be easier to reconcile and document if each team works inisolation.

Bottom of Form

24 Top of Form

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

Bottom of Form

25 Top of Form

Which WAN topology will provide redundancy at minimum cost?

star

mesh

hybrid

partial mesh

Bottom of Form

26 Top of Form


9/17

Refer to the exhibit. The network administrator creates a standard access control list toprohibit traffic from the 192.168.1.0/24 network from reaching the 192.168.2.0/24 networkwhile still permitting Internet access for all networks. On which router interface and in which

direction should it be applied?

interface Fa0/0, inbound

interface Fa0/0, outbound

interface Fa0/1, inbound

interface Fa0/1, outbound

Bottom of Form

27 Top of Form

Refer to the exhibit. PC1, PC2, and PC3 are configured with dynamic address assignments.PC2 is assigned an IP address from the DHCP server. What would account for the IPaddresses that are currently assigned to PC1 and PC3?

Switch S2 port Fa0/12 is configured for full-duplex.

These addresses were included in the DHCP server pools.

Router R1 has a misconfigured IP address on interface Fa1/0.

R1 interface Fa0/0 is not in the same network as the DHCP server.

R1 interfaces Fa0/0 and Fa1/0 do not include the ip helper-address command.

Bottom of Form

28 Top of Form

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

checksum

digital certificates

encapsulation

encryption


10/17

hashing

Bottom of Form

29 Top of Form

A network administrator has moved the company intranet web server from a switch port to adedicated router interface. How can the administrator determine how this change has affectedperformance and availability on the company intranet?

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

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

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

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

Bottom of Form

30 Top of Form

Which statement accurately describes a role that is played in establishing a WANconnection?

ISDN and ATM are circuit-switched technologies that are used to establish on demand apath through the service provider network.

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

A packet-switching network establishes a dedicated circuit between nodes for theduration of the communication session.

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

Bottom of Form

31 Top of Form

Refer to the exhibit. Which statement is true about the configuration of R1?

The remote session is encrypted.

A password is sent in plain text.

A connection that is using secure HTTP is enabled.

A local username database is used for authentication.

Bottom of Form


11/17

32 Top of Form

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.

Bottom of Form

33 Top of Form

At what physical location does the responsibilty for a WAN connection change from the userto the service provider?

demilitarized zone (DMZ)

demarcation point

local loop

cloud

Bottom of Form

34 Top of Form

Refer to the exhibit. RIPv2 has been configured on all routers in the network. Routers R1 andR3 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.

Bottom of Form

35 Top of Form

Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from the


12/17

DHCP server. The output of the debug ip dhcp server command shows DHCPD: there isno 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.

Bottom of Form

36 Top of Form

Refer to the exhibit. Branch A has a non-Cisco router that is using IETF encapsulation andBranch B has a Cisco router. After the commands that are shown are entered, R1 and R2 failto establish the PVC. The R2 LMI is Cisco, and the R1 LMI is ANSI. The LMI issuccessfully 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.

Bottom of Form

37 Top of Form

Refer to the exhibit. Routers R1 and R2 have been configured with EIGRP in the sameautonomous system. Computers PC1 and PC2 are not able to ping each other. Furtherinvestigation has revealed that the route to 192.168.10.0 is missing from the routing table onR2. What is the cause of the problem?

The networks are not correctly summarized.

The FastEthernet interfaces on R1 are configured as passive.

The network statements on R2 are incorrectly configured.

EIGRP on R1 does not recognize the 192.168.10.0 network.

Bottom of Form


13/17

38 Top of Form

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

Bottom of Form

39 Top of Form

From observing lots of port scans and ping sweeps on the company network, an administratorhas determined that an edge router is experiencing an attack. These exploits are examples ofwhat type of network attack?

DoS

access

reconnaissance

man-in-the-middle

Bottom of Form

40 Top of Form

Because of a remote-procedure call failure, a user is unable to access an NFS server. At whatlayer of the TCP/IP model does this problem occur?

network layer

data link layer

physical layer

application layer

Bottom of Form

41 Top of Form


14/17

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

Bottom of Form

42 Top of Form

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

Bottom of Form

43 Top of Form

Which additional functionality is available on an interface when the encapsulation is changed

from HDLC to PPP?flow control

error control

authentication

synchronous communication

Bottom of Form

44 Top of Form

When Frame Relay encapsulation is used, what feature provides flow control and exchangesinformation about the status of virtual circuits?

LCP

LMI


15/17

DLCI

Inverse ARP

Bottom of Form

45 Top of Form

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.

Bottom of Form

Top of Form

46 Which characteristic of VPN technology prevents the contents of data communications frombeing read by unauthorized parties?

QoS

latency

reliability

confidentiality

47 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.

Bottom of Form

48 Top of Form

Refer to the exhibit. The corporate network that is shown has been assigned network172.16.128.0/19 for use at branch office LANs. If VLSM is used, what mask should be used


16/17

for addressing hosts at Branch4 with minimal waste from unused addresses?

/19

/20

/21

/22

/23

/24

Bottom of Form

49 Top of Form

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 isexperiencing congestion.

Only control FECN and BECN bits are sent over the Frame Relay connection. No datatraffic traverses the link.

Bottom of Form

50 Top of Form

Refer to the exhibit. Which statement correctly describes how Router1 processes an FTPrequest packet that enters interface S0/0/0, and is destined for an FTP server at IP address172.16.1.5?

The router matches the incoming packet to the statement that is created by access-list201 permit ip any any command and allows the packet into the router.

The router reaches the end of ACL 101 without matching a condition and drops thepacket because there is no statement that was created by access-list 101 permit ip anyany command.The router matches the incoming packet to the statement that was created by the access-list 101 permit ip any 172.16.1.0 0.0.0.255 command, ignores the remaining statementsin ACL 101, and allows the packet into the router.The router matches the incoming packet to the statement that was created by the access-list 201 deny icmp 172.16.1.0 0.0.0.255 any command, continues comparing the packet


17/17

to the remaining statements in ACL 201 to ensure that no subsequent statements allowFTP, and then the router drops the packet.

Bottom of Form

51 Top of Form

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

use the copy tftp: flash: 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 running-config command to view thepassword

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

Bottom of Form

52 Top of FormA company is looking for a WAN solution to connect its headquarters site to four remotesites. What are two advantages that dedicated leased lines provide compared to a sharedFrame 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

Bottom of Form

ccna 4 final questions december 2010

Documents