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H12-221-ENU PDF DEMO:
QUESTION NO: 1
Regarding the description of BGP Keepalive message, which is wrong?
A. Keepalive packets are consist of only one BGP data header.
B. By default, the keepalive interval is 180s.
C. Keepalive is periodically sent between two BGP neighbors.
D. Keepalive packets are mainly used for the running status of the peer routers and the availability confirmation of the link.
Answer: B
QUESTION NO: 2
About the basic concepts of link aggregation, the following description which is wrong?
A. Link aggregation is a method of binding a group of physical interfaces together as a logical interface to increase bandwidth and reliability.
B. Logical links formed by binding multiple physical links are called link aggregation groups (LAGs) or trunk.
C. There are only active interfaces for link aggregation.
D. Link aggregation follows the IEEE 802.3ad protocol.
Answer: C
QUESTION NO: 3
Which of following the multicast distribution tree is wrong?
A. The PIM-DM protocol can only generate SPT trees.
B. The PIM-SM protocol can generate both RPT trees and SPT trees.
C. The PIM-DM protocol can generate both RPT trees and SPT trees.
D. The multicast distribution trees are generally divided into two types: SPT and RPT.
Answer: C
QUESTION NO: 4
The OSFF NBMA network requires that routers in the network must select DR and BDR; otherwise, they can't work.
A. False
B. True
Answer: A
QUESTION NO: 5
For the PIM-DM protocol, when an upstream interface receives a graft message, which of the following need to send packets to the downstream router?
A. Join
B. Graft-ACK
C. Graft
D. Assert
Answer: B
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Updated: May 28, 2022