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CCNA Exploration 4.0

CCNA Exploration 4.0

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CCNA 4 Final Exam 2011 Answers Updated

Posted: 16 May 2011 03:16 PM PDT

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 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.

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 in the 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?

Exam Results – EWAN Final Exam – CCNA Exploration: Accessing the WAN – Version 4.0

Date Exam was Taken: 16/05/2011

Domain Knowledge – Weighted Score
Max Points: 100
Earned Points: 90
Percentage: 90.0%

Personalized Feedback has been generated based on your responses to this exam. Click Here to view your Personalized Feedback
Domain Knowledge – Binary Score
Max Points: 50
Earned Points: 44
Percentage: 88.0%

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CCNA 1 Final exam 2011 French

Posted: 03 May 2011 01:35 PM PDT

Thank B.M.B Send it to me!
Download CCNA 1 Final exam 2011 French now

CCNA 1 Final exam 2011 French


CCNA 4 Skill 2011 – CCNA Exploration: Accessing the WAN Student Skills Based Assessment Lab

Posted: 15 Apr 2011 12:36 AM PDT

CCNA Exploration: Accessing the WAN Student Skills Based Assessment Lab (CCNA 4 Skill 2011)

Topology Diagram

Addressing Table

Learning Objectives
To complete this lab:

  • •    Cable a network according to the topology diagram
  • •    Erase the startup configuration and reload a router to the default state
  • •    Perform basic configuration tasks on a router
  • •    Configure and activate interfaces
  • •    Configure and activate serial interfaces (PPP with CHAP, HDLC, and Frame Relay)
  • •    Configure RIP on all the routers
  • •    Configure basic router security
  • •    Configure ACLs
  • •    Configure basic NAT

Scenario
This lab tests you on the skills and knowledge that you learned in Exploration 4. Use cisco for all passwords in this lab, except for the enable secret password, which is class.
Task 1: Prepare the Network

  • Step 1: Cable a network that is similar to the one in the topology diagram.
  • Step 2: Clear any existing configurations on the routers.

Task 2: Perform Basic Device Configurations
Configure the R1, R2, and R3 routers according to the following guidelines:

  • •    Configure the router hostname.
  • •    Disable DNS lookup.
  • •    Configure an EXEC mode password.
  • •    Configure a message-of-the-day banner.
  • •    Configure a password for console connections.
  • •    Configure synchronous logging.
  • •    Configure a password for vty connections.

Task 3: Configure and Activate Serial and Ethernet Addresses

  • Step 1: Configure interfaces on R1, R2, and R3.
  • Step 2: Verify IP addressing and interfaces.
  • Step 3: Configure the PC1 and PC3 Ethernet interfaces.
  • Step 4: Test connectivity between the PCs and routers.

Task 4: Configure Serial Interfaces

  • Step 1: Configure and verify PPP encapsulation with CHAP authentication between R1 and R2. The password is "cisco".
  • Step 2: Configure and verify HDLC encapsulation between R2 and R3.
  • Step 3: Configure Frame Relay between R1 and R3.

Task 5: Configure RIP

  • Step 1: Configure RIP on R1, R2, and R3.
  • RIP updates should only be sent on the serial links between the routers. Prevent all other RIP updates on all networks.
  • Step 2: Test connectivity with the ping command.
  • Step 3: Verify the routing table with the appropriate command.

Task 6: Configure Basic Router Security

  • Step 1: Enable a secure Telnet login using a local database on R2.
  • Step 2: Disable unused services and interfaces on R2.
  • Step 3: Confirm that R2 is secured.

Task 7: Configure Access Control Lists

  • Step 1: Allow telnet to R1 and R3 from R2 only.
  • Step 2: Do not allowlHTTP, Telnet, and FTP traffic from the Internet to PC1.
  • Step 3: Do not allow PC1 to receive traffic from the 10.0.0.128 /25 network.
  • Step 4: Verify that PC3 cannot ping PC1, but can ping 10.0.0.1.

Task 8: Configure NAT.

  • Step 1: Configure NAT to allow PC3 to ping PC1.
  • Step 2: Verify that PC3 can reach PC1.

Task 9: Document the Router Configurations
Task 10: Clean Up
Erase the configurations and reload the routers. Disconnect and store the cabling. For PC hosts that are normally connected to other networks, such as the school LAN or to the Internet, reconnect the appropriate cabling and restore the TCP/IP settings.

Thanks

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Packet Tracer Version 5.3.2 Available

Posted: 12 Apr 2011 04:06 PM PDT

Cisco Packet Tracer Software Downloads
Packet Tracer Version 5.3 2 Software Downloads
Packet Tracer version 5.3.2 is a maintenance release that fixes functional and technical issues in the previous versions. It replaces Packet Tracer version 5.3.1
Packet Tracer 5.3 2 supports activities authored in Packet Tracer 4.0, 4.1, 4.11, 5.0, 5.1, 5.2.x , and 5.3.x Please note that the last two courses of the CCNA Discovery and CCNA Exploration curricula require Packet Tracer version 4.11 at a minimum, CCNA Security requires version 5.2 at a minimum, and the beta Packet Tracer Skills Based Assessments require version 5.2.1 at a minimum. The curricula are fully compatible with Packet Tracer 5.3.2
You can download both the Packet Tracer application and tutorial files in one download package. However, due to the large file size it is faster to download the application by itself, if that is all you need. Choose the download option appropriate for your needs.

Windows:

Title Document Type
Packet Tracer v5.3.2 Application + Tutorial
This is the complete Packet Tracer program including tutorials as a single downloadable package for Windows 2000, XP and Vista.		 (EXE – 80 MB)
Packet Tracer v5.3.2 Application only
This option is just the Packet Tracer program and the help files for Windows 2000, XP and Vista. It does not include the tutorial files. The tutorial files are not necessary to run Packet Tracer.		 (EXE – 47 MB)

Linux:
Use Firefox to download the Linux.bin files as Internet Explorer doesn’t load them correctly.
To install the Linux BIN packages, set the permission to be executable (chmod +x PacketTracer52_*.bin) then execute the binary in the terminal.

Title Document Type
Packet Tracer v5.3.2 Application + Tutorial Linux-Ubuntu
This is the complete Packet Tracer program including tutorials as a single downloadable package for Ubuntu release 7.10.		 (BIN – 101 MB)
Packet Tracer v5.3.2 Application only Linux-Ubuntu
This option is just the Packet Tracer program and the help files for Ubuntu release 7.10. It does not include the tutorial files. The tutorial files are not necessary to run Packet Tracer.		 (BIN – 68 MB)
Packet Tracer v5.3.2 Application + Tutorial – Generic Ubuntu
This is the complete Packet Tracer program including tutorials for generic Ubuntu		 (tar.gz – 102 MB)
Packet Tracer v5.3.2 Application + Tutorial Linux-Fedora
This is the complete Packet Tracer program including tutorials as a single downloadable package for Fedora release 7.		 (BIN – 98 MB)
Packet Tracer v5.3.2 Application only Linux-Fedora
This option is just the Packet Tracer program and the help files for Fedora release 7. It does not include the tutorial files. The tutorial files are not necessary to run Packet Tracer.		 (BIN – 65 MB)
Packet Tracer v5.3.2 Application + Tutorial Generic Fedora
This is the complete Packet Tracer program including tutorials for generic Fedora		 (tar.gz – 99 MB)


ccna 4 final 2011 Update

Posted: 07 Apr 2011 04:08 AM PDT

ccna 4 final 2011 Updated April 12, 2011

ccna 4 final 2011

Thank


CCNA 2011 question and answers updates

Posted: 17 Mar 2011 08:03 PM PDT

CCNA 2011 question and answers updates

CCNA 1 V4.0 Exam Answers

CCNA 2 V4.0 Exam Answers

CCNA 3 V4.0 Exam Answers

CCNA 3 V4.0 Exam Answers

CCNA ANSWERS 2011 Questions and answers

Posted: 07 Mar 2011 12:04 PM PST

Hello!
I have updated all CCNA V4.0 questions and answers 2011.

Download here
ccna 2011


CCNA 2 Skill test 2011

Posted: 22 Feb 2011 09:46 AM PST


Thank Ebad Ahmadzadeh sent it to me!

CCNA 2 Skill test 2011

you are an employee of XYZ company, and your task is to build and configure the network for branch and connect it to the ISP network. The company has 20 equivalent branches and you are responsible for a branch
ccna 2 skill 2011

ccna 2 skill 2011
1-Access to an ISP through the interface F0/0 of router0
  • Use address 192.168.1.2/24 to configure this interface.
2-Address 192.168.1.1/24 is configured on the other side at ISP
3-Prepare addressing schema for network
  • on the basis of network 12.1.0.0/16 using VLSM
  • configure routers interfaces
4-Configure dynamic routing OSPF on both routers.
  • Include all of your network and the network to the ISP
  • Summarize manually networks to 12.1.0.0/16
5-configure the default routing to the internet through the ISP network-check the availability of a web server at 192.100.100.100
6- Configure remote access to one router
  • Use VTY password: cisco
  • Use a password to enable secret: class
Download:   >> ccna 2 skill 2011<<

topology.PNG
19K
CCNA2_Skill_Test.docx CCNA2_Skill_Test.docx
63K   
CCNA2_Skill_Test.pdf CCNA2_Skill_Test.pdf
131K
topologia.pkt topologia.pkt
20K

(Source: ccna final)

 

CCNA 4 Final Questions December 2010

Posted: 30 Nov 2010 12:05 PM PST

CCNA 4 Final Questions December 2010
Download
www.ccna4u.biz
packet tracer

1
Which data link layer encapsulation protocol is used by default for serial connections between two Cisco routers?
ATM
Frame Relay
HDLC
PPP
SDLC
2
A network administrator determines that falsified routing information is propagating through the 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.
3
What will be the result of adding the command ip dhcp excluded-address 10.10.4.1 10.10.4.5 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 addresses 10.10.4.1 and 10.10.4.5.
4
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.
5
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 speeds than Company B. Which option best explains the reason for Company A having the higher download 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 than Company 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.
6
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.
7
Which option represents a best practice for applying ACLs?
Named ACLs are less efficient than numbered ACLs.
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.
8
A technician is editing and reapplying ACL 115 to a router, what is the result of adding the command access-list 115 permit tcp any 172.16.0.0 0.0.255.255 established to the ACL when 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.
9

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
10
Which protocol is used to authenticate connections over serial links securely?
CHAP
HDLC
SLIP
PAP
11
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.
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

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.
14
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
15

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
16

Refer to the exhibit. What is placed in the address field in the header of a frame that will travel from the San Jose router to the DC router?
DLCI 103
DLCI 301
172.16.1.18
172.16.1.19
17
Which option correctly defines the capacity through the local loop guaranteed to a customer by the service provider?
BE
DE
CIR
CBIR
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

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
20

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
ip nat inside source static 10.1.200.254 192.168.0.10
ip nat inside source static 172.16.76.3 10.1.200.254
ip nat inside source static 172.16.76.3 192.168.0.10
ip nat inside source static 192.168.0.10 172.16.76.3
ip nat inside source static 192.168.0.10 10.1.200.254
21

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.
22

Refer to the exhibit. You are a network administrator who has been 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?
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 0/0/0.2
HQ(config-subif)# frame-relay map ip 172.16.1.1 103 broadcast on Serial 0/0/0.1
HQ(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 0/0/0.1
HQ(config-subif)# frame-relay interface-dlci 203 on Serial 0/0/0.2
HQ(config-subif)# frame-relay interface-dlci 301 on Serial 0/0/0.1
HQ(config-subif)# frame-relay interface-dlci 302 on Serial 0/0/0.2
23
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.
24

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
25
Which WAN topology will provide redundancy at minimum cost?
star
mesh
hybrid
partial mesh
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 192.168.2.0/24 network while 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
27

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 IP addresses 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.
28
What are two main components of data confidentiality? (Choose two.)
checksum
digital certificates
encapsulation
encryption
hashing
29
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.
30
Which statement accurately describes a role that is played in establishing a WAN connection?
ISDN and ATM are circuit-switched technologies that are used to establish on demand a path through the service provider network.
Data link layer protocols like PPP and HDLC define how data is encapsulated for transmission across a WAN link.
A packet-switching network establishes a dedicated circuit between nodes for the duration of the communication session.
Frame Relay switches are normally considered to be customer premises equipment (CPE) and are maintained by local administrators.
31

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.
32
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.
33
At what physical location does the responsibilty for a WAN connection change from the user to the service provider?
demilitarized zone (DMZ)
demarcation point
local loop
cloud
34

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.
35

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.
36

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.
37

Refer to the exhibit. Routers R1 and R2 have been configured with EIGRP in the same autonomous system. Computers PC1 and PC2 are not able to ping each other. Further investigation has revealed that the route to 192.168.10.0 is missing from the routing table on R2. 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.
38
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
39
From observing lots of port scans and ping sweeps on the company network, an administrator has determined that an edge router is experiencing an attack. These exploits are examples of what type of network attack?
DoS
access
reconnaissance
man-in-the-middle
40
Because of a remote-procedure call failure, a user is unable to access an NFS server. At what layer of the TCP/IP model does this problem occur?
network layer
data link layer
physical layer
application layer
41

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.
42
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
43
Which additional functionality is available on an interface when the encapsulation is changed from HDLC to PPP?
flow control
error control
authentication
synchronous communication
www.ccna4u.biz
www.ccna4u.org
44
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
45
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.
46
Which characteristic of VPN technology prevents the contents of data communications from being 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.
48

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
49

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.
50

Refer to the exhibit. Which statement correctly describes how Router1 processes an FTP request packet that enters interface S0/0/0, and is destined for an FTP server at IP address 172.16.1.5?
The router matches the incoming packet to the statement that is created by access-list 201 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 the packet because there is no statement that was created by 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 172.16.1.0 0.0.0.255 command, ignores the remaining statements in 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 to the remaining statements in ACL 201 to ensure that no subsequent statements allow FTP, and then the router drops the packet.
51
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 the password
boot the router to ROM monitor mode and configure the router to ignore the startup configuration when it initializes
52
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


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1 komentar:

  1. Ed D22 September 2011 pukul 19.14

    Thanks for the good information you have shared on your article , avery reliable source for CCNA exam.

    BalasHapus

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