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15.What is the cause of jitter?

A. Variable queue delays
B. Packet drops
C. Transmitting too many small packets
D. Compression

    - BCRAN

    16.Regarding DHCP, DHCP relay and DHCP server are mutually exclusive.

A. None of the choices.
B. True
C. False only for certain IOS version
D. False
E. False only for IOS version below V10

    17.A LAPD Address field can be 1 or 2 bytes long.

A. True
B. False
C. True only in the US
D. True only in Asia
E. True only in Europe

    18.Which of the following are valid functions of the lock DTE modem attribute (Choose all that apply)?

A. Disable UART.
B. Enable UART.
C. Locks the data speed between the computer motherboard and the RS232 port.
D. Locks the data speed between the modem and the DTE device.

    19.Which of the following are not the valid types of ATM addresses (Choose all that apply)?

A. DCC
B. GCT
C. BSP
D. ICD
E. NSAP
F. AED

    20.Which of the following are NOT the valid types of X.25 PLP packet fields (Choose all that apply)?

A. User Data
B. LCI
C. GFI
D. PTI
E. None of the choices.

    - CIT

    21.You are a technician at ABC.com. Your newly appointed ABC trainee wants to know what the similarities between Topology Diagrams and Network Configuration Tables are.
What would your reply be? (Choose all that apply.)

A. Both share few components.
B. Both share many of the same components.
C. Both define physical memory components.
D. Both are used for troubleshooting.
E. Both use lines and symbols to represent network components.

    22.You are a technician at ABC.com. Your newly appointed ABC trainee wants to know what the default action for the output of debug and system error messages is. What would your reply be?

A. Output goes to the remote console if logging is off.
B. Output is sent to the console terminal.
C. Error logging automatically invokes debug output to the designated TFTP server.
D. Output configuration requires a TFTP server to write files
E. Output is written to a Syslog server.

    23.You are the network administrator at ABC.com. ABC has a switched network. You want to control the designation of the spanning-tree root bridge in the ABC network. What should you do?

A. By enabling uplink-fast on the ports of the desired switch.
B. By lowering the bridge priority on the desired switch.
C. By setting a lower MAC address on the designated switch.
D. By raising the bridge ID on one switch.

   24.You are a technician at ABC. You receive a report from several ABC users who complain that they get slow responses when sending and receiving email, especially when browsing the Internet. You investigate the complaint by checking the output of a ping command issued from her computer and find that it indicates intermitted success and failures messages, when attempting to contact the email server. A tracert to the corporate Internet gateway router shows high latency and occasional time out messages.
What would be the most effective troubleshooting approach if you are to determine the cause of the slow response time?

A. Bottom-up approach
B. Random access approach
C. Divide and conquer approach
D. Top-down approach
E. Top-down rule-out approach

    25.You are a technician at ABC.com. Your newly appointed ABC trainee wants to know what features make OSPF more suitable than RP in large network installations. What would your reply be? (Choose all that apply.)

A. Diffusing Update Algorithm
B. No hop count limitation
C. Higher routing update overhead
D. Faster convergence
E. Lower routing update overhead

    CCIE

    26.You are the network administrator at ABC. You are troubleshooting a network problem. You want to trace the route to a Unix workstation that you want to reach through the Internet. However, Traceroute does not work.
Currently, there is an inbound access-list applied to the serial interface on Router 1. An entry in the access-list states "access-list 101 permit tcp any any". What access-list entry may you need to be added to the access-list in order to get traceroute to work?

A. access-list 101 permit udp any any
B. access-list 101 permit icmp any any time-exceeded access-list 101 permit icmp any any port-unreachable
C. access-list 101 permit icmp any any time-exceeded access-list 101 permit icmp any any net-unreachable
D. access-list 101 permit icmp any any echo access-list 101 permit icmp any any net-unreachable
E. access-list 101 permit udp any any access-list 101 permit icmp any any protocol-unreachable

    27.What does the BGP backdoor command do?

A. It changes the distance of an iBGP route to 20.
B. It changes the distance of an eBGP route to 200.
C. It changes the distance of an IGP route to 20.
D. It does not effect any changes in distance of the route.
E. It changes the distance of an IGRP route to 200.

    28.Which of the following DNS resource records is not valid?

A. NS
B. PTR
C. MX
D. FQDN
E. A

    29.Which of the following features is provided by RIP v2 that were previously not possible with RIP v1? (Choose all that apply.)

A. Classless routing and split-horizon.
B. Poison reverse and updating to multicast addresses.
C. Poison reverse and classless routing.
D. Classless routing and updating to multicast addresses.
E. Route tag and classless routing.

    30.Which of the following statements is valid when taking Custom Queuing into account?

A. Custom queuing has the ability to restrict a particular type of traffic to a given bandwidth not matter what is load is like on that link.
B. Custom queuing looks at groups of packets from the similar source-destination pairs.
C. Custom queuing will not proceed to a next queue unless the current queue is empty.
D. Custom queuing can prevent one type of traffic from dominating a busy link.