RouterTK1(config)#router igrp 200
Examine the Routing tables of RouterTK1 and RouterTK2 above after the next IGRP update is sent from RouterTK1 to RouterTK2 what networks will show up in RouterTK2’s route table.
A. 192.168.3.0
Explanation: Routers must have same AS number. Only the networks defined at RouterTK2 will be shown. No networks will be copied from RouterTK1.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 282 – 286.
QUESTION NO: 182
Your router stores routing tables, ARP cache, and packet buffers where are these stored?
A. ROM B. RAM C. NVRAM D. Flash memory
Answer: B
Explanation: RAM (random access memory) is used by all computers to store information. Cisco routers use RAM to store packet buffers, routing tables and ARP cache.
Incorrect Answers:
A: ROM are chips that are used to help boot a system, and are changed only be replacing the chips themselves.
B: NVRAM is used to save long-term items that don’t change much, such as the startup configuration.
D: Flash is used to save copies of the IOS code.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 125-126.
QUESTION NO: 183
You are the network administrator of the Sonic Water Company. One of your users is unable to reach the company’s web site that is hosted at a remote site. Looking at the personal computer you discover the following information:
Local PC – 10.0.3.35/24 Default gateway – 10.0.3.1 Remote server – 10.0.5.250/240
You then conduct the following tests from the offending local PC:
ping 127.0.0.1 – successful ping 10.0.3.35 – successful ping 10.0.3.1 – unsuccessful ping 10.0.5.250 – unsuccessful
Which of the following problems would create the test results listed above?
A. TCP/IP not correctly installed.
B. Local physical layer problem.
C. Local NIC not functioning.
D. Remote physical layer problem.
Answer: B
Explanation: The client was only able to ping itself, not the default gateway or the remote server. A local physical layer problem, for example a faulty patch cable, could explain the results above.
Incorrect Answers:
A: You would not be able to ping anything if TCP/IP was not correctly installed.
C: You would not be able to ping anything of the local NIC was not functioning.
D: A remote physical layer problem would not prevent the local PC from pinging the gateway.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 124 – 125.
QUESTION NO: 184
Which are the following are considered ISDN benefits? (Choose four)
A. Full time connectivity across the ISDN supported by Cisco IOS routing using dial on demand routing DDR.
B. Small office and home office sites can be economically supported with ISDN basic rate interface BRI services.
C. ISDN replaces signaling system ss7 in the public switch telephone network PSTN backbone.
D. ISDN can be used as a backup service for a lease line connection between the remote and central offices.
E. Modem racking and cabling can be eliminated by integration with digital modem cards on Cisco IOS network access servers NAS.
Answer: A, B, D, E
Explanation: When ISDN is implemented there are great deals of benefits. Among these benefits are higher speeds, ability to use DDR, reduce need for equipment, economic to deploy in medium size companies, and the ability to use other mediums as backup
Incorrect Answers:
C: ISDN can be used on the existing telephone network without the need of signaling changes.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 387-400.
QUESTION NO: 185
You are the network administrator of the ABC Tire Company. You receive a call from a user who is unable to reach a server at a remote server 10.0.5.250/240. Using VNC (Virtual Network Computing) you connect to the user’s computer and discover the following information:
Local PC – 10.0.3.35/24 Default gateway – 10.0.3.1 Remote server – 10.0.5.250/24
You then conduct the following tests from the user’s PC:
ping 127.0.0.1 – successful ping 10.0.3.35 – successful ping 10.0.3.1 – successful ping 10.0.5.250 – unsuccessful
Which of the following problems would create the test results listed above?
A. TCP/IP not correctly installed.
B. Local physical layer problem.
C. Local NIC not functioning.
D. Remote physical layer problem.
Answer: D
Explanation: As the ping of the remote server was unsuccessful there is a problem with the remote physical layer problem.
Incorrect Answers:
A: You would not be able to ping anything if TCP/IP was not correctly installed.
B: You would not be able to ping the local IPs if there was a problem with the local physical layer.
C: You would not be able to ping anything of the local NIC was not functioning.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) page 124.
QUESTION NO: 186
Gail was working on your Cisco router while you were at lunch. Which command will display the last commands Gail entered?
A. Control header.
B. Show buffer.
C. Show history.
D. Show history buffer.
Answer: C
Explanation: The show history command will show of the commands that are stored in the buffer.
Incorrect Answers:
A, B, D: Are not valid IOS commands.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) page 94.
QUESTION NO: 187
What is the bit pattern for the first octet of a class B network address 129.107.0.0?
A. 0xxxxxxx B. 10xxxxxx C. 110xxxxx D. 1110xxxx E. 11110xxx
Answer: B
Explanation: Class B networks use a default subnet mask of 255.255.0.0 and have 128-191 as their first octet.
129 binary is 10000001 and 191 binary is 10111111.
Incorrect Answers:
A. Require a 1 in the first space of the octet to be a Class B address.
B, C, D, E. Are to large to be a Class B addresses.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 221 – 223.
QUESTION NO: 188
Which command will provide you with information regarding the Layer 3 IP address of a directly connected neighbor?
A. Show ip interface B. Show cdb neighbors C. Show cdp neighbors detail
D. Show ip route E. Show ip link status F. Telnet
Answer: C
Explanation: The show cdp neighbors detail command displays information about neighboring devices. The information displayed includes Layer 3 protocol information and Neighbor Device ID. The show cdp entry command also results in the same information as the show cdp neighbors detail command.
Incorrect Answers:
A: The show ip interface command display IP interface information and indicates whether any access list are set for a specific interface.
B: The show cdp neighbors command displays such information as Neighbor Device ID and Local Interface but nothing on Layer 3 protocols.
D: The show ip route command displays the contents of the ip routing table.
E: This is not a valid command.
F: The telnet command is used to establish a telnet command.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 116-119, 324-324, 280, and 120.
QUESTION NO: 189
How many bits are used for a MAC address and how is number expressed?
A. 24 bits expression as a decimal number.
B. 24 bits expression as a hexadecimal number.
C. 36 bits expression as a binary number.
D. 48 bits expression as a decimal number.
E. 48 bits expression as a hexadecimal number.
Answer: E Explanation:
The MAC address is a 48 bit address expressed as 12 hexadecimal digits. The first 24 bits or 6 hexadecimal digits of the MAC address contain a manufactures identification or vendor code (also known as the Organizationally Unique Identifier – OUI). To ensure uniqueness, the IEEE administers OUIs. The last 24 bits or 6 hexadecimal digits are administered by each vendor and often represent the interface serial number.
Incorrect Answers:
A, B, and C: MAC addresses are 48 bits that are expressed as a hexadecimal number.
D: MAC addresses are expressed as hexadecimal, not decimal.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 19-20.
QUESTION NO: 190
User Datagram Protocol is a Connectionless transport layer protocol in the TCP/IP protocol stack. UDP is defined in RFC 768. Which of the following are generally considered to be characteristics of UDP? (Choose two.)
A. Non-reliable.
B. Reliable.
C. Less bandwidth-intensive.
D. Handshaking.
Answer: A, C:
Explanation: Connectionless protocols, for example UDP, do not establish a connection between the
communicating partners and do not use acknowledgements. This makes connectionless protocols non-reliable.
However, this also makes them less bandwidth intensive since they carry very little overhead data.
Incorrect Answers
B: Connection-oriented protocols are reliable.
D: Connectionless protocols do not establish a connection so they have no use of handshaking.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 206 – 208.
QUESTION NO: 191
You have been called in to fix a router that is having security issues. The router has an access list configured on it but the list does not seem to be working. What command can you use to see if the access list has been applied to an interface?
A. Show access-list.
B. Show ip route.
C. Show ip interface.
D. Show interface.
E. Show interface list.
Answer: C
Explanation: The show ip interface command display IP interface information and indicates whether any access list are set for a specific interface and it also indicates if the access list is inbound or outbound.
Incorrect Answers:
A: This is not a valid command.
B: The show ip route command displays the contents of the ip routing table.
D: The show interface command displays the serial interface configuration.
F: This is not a valid command.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) pages 324-325, 280, and 106
QUESTION NO: 192