Question 1

What are the advantages of OSPF division area?

AMassive LSA flooding is confined to a single area

BRouters in an area are able to understand topology details outside their area

CLSA can also be reduced with the division of the area, reducing the consumption of router CPU

DIt can reduce the size of LSDB and thus reduce the consumption of router memory

Answer : A, C, D

Question 2

Which of the following functions will affect the establishment of BGP neighbors?

Aebgp max hop

BBGP certification

CBGP route filtering

DBGP GSTM

Answer : A, B, D

Question 3

The routing attributes of the three routing entries are shown in the figure. Assuming that the next hops of the three routing entries are reachable, when the three routing entries arrive at the BGP router in sequence, by default, which routing entry will be preferred by BGP in the end ?

ARoute CB, Route A

BRoute B and Route

Cwill be selected at the same time-and form load sharing

DRoute B

Answer : A

Question 4

Which of the following regular expressions can match only the BGP routing entries that pass through AS200 and then through AS300?

A_[200 300]_

B200$|300$

C^200|^300

D_(200 300)_

Answer : D

Question 5

RTA is the source DR router and RTB is the RP router. The multicast source sends multicast data to the RIA, but the RIB cannot see the multicast source registered to it through the PIM Register message. What are the possible reasons?

AThere is no unicast route from RTB to RTA, which causes RTB to fail the RPF check of the source.

BThe multicast network dynamically elects RP, and RTA fails to check the RPF of BSR.

CThe RP elected by RTA is not RTB

DThe RP is statically configured on the multicast network, while the RTA router is not statically configured with the RP

Answer : A, B, C, D

Free Practice Questions for Huawei H12-261_V3.0 Exam

Question 1

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Question 4

Question 5