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?

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