#debug ppp authentication
ppp serial1: send CHAP challenge id-47 t remote ppp serial1: CHAP challenge from TestK
ppp serial1: CHAP response received from TestK ppp serial1: CHAP response id=47 received from TestK ppp serial1: Send CHAP success id=47 to remote ppp serial1: Remote passed CHAP authentication ppp serial1: Passed CHAP authentication
ppp serial1: Passed CHAP authentication with remote
You issued the command debug ppp authentication what type of handshaking was used for this PPP session?
A. One-way B. Two-way C. Three-way
D. No handshake required during authentication. Answer: C
Explanation: We see that CHAP authentication is used. CHAP use three-way handshaking. We can also see the three-way handshake if we examine the exhibit carefully (challenge, challenge, response, response, success). Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 378 – 383.
QUESTION NO: 174
Which of the following protocols is referred to as a hybrid routing protocol because it has features of both distance-vector and link-state?
A. RIP B. OSPF
C. EIGRP D. IGRP Answer: C
Explanation: EIGRP is an example of a balanced hybrid routing protocol. It uses distance vectors with more accurate metrics to determine the best paths to destination networks. However, it differs from most distance vector protocols as it also has some features of link-state protocols.
Incorrect Answers:
A and D: These are examples of distance vector routing protocol. B: OSPF is an example of a link-state routing protocol.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 275-276 and 259.
QUESTION NO: 175
You would like to be able to make a backup copy of your IOS that is stored on your router. Which of the following commands can you use so that the router will become a TFTP host so that it can save the IOS to a TFTP server?
A. Copy flash tftp B. Config tftp server
C. Write network <router name> D. Tftp-server system <filename> E. Setup server tftp <systemname> Answer: A
Explanation:. To copy a system image to a TFTP network server you use copy flash tftp command. Note: Syntax
copy flash-url
tftp:[[[//location]/directory]/filename]
Copies the system image from Flash memory to a TFTP server. Specify the file location and filename as the flash-url argument.
Reference: Cisco, Loading and Maintaining System Images B: This is not a valid command.
C: This is not a valid command. D: This is not a valid command.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 138 – 139.
QUESTION NO: 176
Your access list has one statement;
access-list 131 permit ip any 131.107.7.0 0.0.0.255 eq tcp
What does the word “any” mean in the following extended access list statement? A. Check any of the bits in the source address.
B. Permit any wildcard mask for the address. C. Accept any source address.
D. Check any bit in the destination address. E. Permit 255.255.255 0.0.0.0.
F. Accept any destination address. Answer: C
Explanation: The permit keyword permits traffic. The any keyword implies that any address is allowed. Here any is used as the source and source-wildcard parameter (see note below). Therefore the access-list permits any source address.
Note: Syntax for an extended access list
access-list access-list-number {deny | permit} protocol source source-wildcard destination destination- wildcard [precedence precedence] [tos tos]
The access-list-number must be in the 100 to 199 or the 2000 to 2699 range. Reference: Cisco, Command Reference
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 308 – 309.
QUESTION NO: 177
Routing Protocols use which OSI layer to determine the best path to a network? A. Data Link
B. Network C. Physical D. Presentation E. Session
F. Transport Answer: B
Explanation: Routing protocol work at the network layer (layer 3) in the OSI model. Incorrect Answers:
A. Data Link layer is concern with a number of things (error detection for example) but not for route determination.
C. Physical layer has nothing to do with route determination. It puts the bits onto the physical wire. D. Presentation layer deals with how the data is presented and not how it is routed.
E. Session layer is responsible for establishing, managing, and ending communication. F. Transport layer is responsible for the connection type and error correction.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 11 – 12.
QUESTION NO: 178
If we are using IPX as our routed protocol and our network has an existing Novell Server with an IPX network address of 4ad1 and we are connecting a Cisco routers Ethernet port to the same segment. The MAC address of the Ethernet port is 021f.2cfe.8322. What will the complete IPX address be for the Ethernet port.
Enter the IPX address for the port.
Answer:
Explanation:
An IPX address is composed of two parts: the network number and the node number. For IPX the node number is usually obtain from MAC address of the network interface. In this case the network number is 4ad1 and the node number/MAC address is 021f.2cfe.8322. Thus the ipx address is 4ad1.021f.2cfe.8322.
QUESTION NO: 179
Which two of the following were created to avoid routing loops with distance vector routing protocols? (Choose two)
A. Split horizon. B. Route Poison. C. Area Hierarchies. D. Link State Algorithms. Answer: A, B
Explanation: There are a number of ways of reducing the chance of routing loops. One way is split horizon. The split horizon rule is that it is not useful to send information about a route back in the direction from which the original update came. Another way is route poisoning. Route poisoning attempts to eliminate routing loops caused by inconsistent updates. With this technique, the router sets a table entry that keeps the network state consistent while other routers gradually converge correctly on the topology change.
Incorrect Answers:
C: Hierarchical areas make for a more efficient use of address but will not prevent loops.
D: Link State is a different method than Vector Routing, they are not combined for loop elimination. Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 266-270.
QUESTION NO: 180
The Defense Advanced Research Projects Agency (DAPRA) developed the TCP/IP suite of protocols. Which layer in that TCP/IP model corresponds to the OSI model’s network layer?
A. Application B. Transport C. Internet D. Network E. Physical Answer: C
Explanation: The ARPA model Internet layer corresponds to the network layer of the OSI model. Reference: http://www.cisco.com/univercd/cc/td/doc/product/iaabu/centri4/user/scf4ap1.htm
QUESTION NO: 181