Answers have been added on Wednesday, June 24.
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CCNA / CCENT Certification:
Two switches are connected via four crossover cables. Trunks have formed and there is no Etherchannel. How many of the eight ports involved in the trunks will be in forwarding mode, assuming one is the root switch for the network?
Answer: Five. All four ports on the root switch will be in forwarding mode, and only one on the non-root switch.
By default, which of the following will a RIP-enabled interface do?
A. Accept broadcast updates
B. Accept multicast updates
C. Transmit broadcast updates
D. Transmit multicast updates
E. Send or accept authenticated updates
Answer: A, B, C. A RIP-enabled interface will transmit V1 updates (broadcasts), but will accept both V1 and V2 (multicast) updates.
Which of the following does Authentication Header NOT offer?
A. data origin authentication
B. data integrity
C. data confidentiality
D. anti-replay protection
Answer: C. AH doesn't offer data confidentiality.
And now, the answers to the CCNP questions....
Which of the following requires some sort of seed metric for redistribution into this protocol to be successful?
Answer: A, B, C.
Of LACP and PAgP, which can be used to create Etherchannels on Cisco switches?
A. LACP only
B. PAgP only
Define the term "penultimate hop popping".
Answer: With penultimate hop popping, the Edge LSR can actually request that the downstream MPLS router pop that label.
As a result, the Edge LSR receives an unlabeled IP packet, and the Edge LSR must now only perform one lookup - the routing table lookup.
Which of the following describes traffic policing?
A. Will "re-queue" traffic
B. Can be configured to police incoming and outgoing traffic
C. Tends to result in fewer TCP retransmissions than traffic shaping
D. Supports traffic marking
Answer: B, D. (Policing tends to result in more TCP retransmissions than shaping, not less.)
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