Cisco 642-661 certification

642-661 exam Cisco company CCIP Configuring BGP on Cisco Routers (BGP) certification exam official code, Cisco 642-661 certification, many large and medium-sized enterprises to choose talents standard prerequisite. Of course, 642-661s extensive coverage of the exam, the exam is relatively difficult.
642-661 examination of the high-quality, high standards


QUESTION 1
Network topology exhibit

What can prevent the corresponding BGP session from being successfully established?

A. Certkiller 2 and Certkiller 5 cannot establish the IBGP session because Certkiller 2 and Certkiller 5 are not directly connected.
B. Certkiller 1 and Certkiller 2 establish the EBGP session if the BGP holddown timers between the two EBGP neighbors are different.
C. Certkiller 2 and Certkiller 5 cannot establish the IBGP session using the loopback0 interface if the EBGP-multihop value is set to the default value.
D. Certkiller 1 and Certkiller 2 cannot establish the EBGP session using the loopback0 interface if the EBGP-multihop value is set to the default value.

Answer: D


QUESTION 2
Exhibit:

How should the EBGP session between R1 and R2 be established to enable load balancing? (Choose three)

A. Use the maximum-paths 2 option.
B. Use the ebgp-multihop 2 option.
C. Use static routes on R1 and R2 to reach the other router's loopback.
D. Establish a single EBGP session using the loopback0 interface IP address on R1 and R2.
E. Establish twp EBGP sessions using both the S0 and S1 interface IP address on R1 and R2.

Answer: BCD


QUESTION 3
Which two statements are true about an EBGP session or an IBGP session? (Choose two.)

A. IBGP uses AS-Path to detect routing information loops within the AS.
B. EBGP routes have a default Admin Distance of 20 and IBGP routes have a default Admin Distance of 200.
C. No BGP attributes are changed in EBGP updates except for the next-hop attribute if next-hop-self is configured.
D. Routes learned from an EBGP peer not advertised to another EBGP peer to prevent routing information loops.
E. IBGP uses split horizon to prevent routing information loops; routes learned from an IBGP peer are not advertised to another IBGP peer.

Answer: BE