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  1. Home
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  3. H12-261_V3.0

Huawei H12-261_V3.0 Exam (page: 10)
Huawei HCIE-Routing & Switching (Written) V3.0 Exam
Updated on: 15-Feb-2026

Viewing Page 10 of 97
H12-261_V3.0 PDF 479 Questions

an existing AS-path-filter: ip as-path-filter 1 permit 100( 100)*( 400)*$, The As-path-fiter cannot match which AS-PATH

Properties?

  1. 100 200 400
  2. 100
  3. 100 400
  4. 100 400 400 400

Answer(s): A

Explanation:

regular expression
The * mark matches the preceding character 0 or more times, and $ marks the end of the string. All BCDs can match.



Which of the following descriptions about ISIS' LSP fragmentation extension is correct??

  1. Make ISIS routers generate more LSP fragments to carry more ISISinformation.
  2. ISIS's shard extension pairThe Hello package works just as well.
  3. ISIS score Slice expansion is achieved by adding virtual systems, which can be extended to 1000 virtual systems at most.
  4. ISISroad The maximum number of shards that the router can generate is 1024.

Answer(s): A

Explanation:

when IS- The link state protocol data packet PDU (Protocol Data When the amount of information in the Unit) is too large, the IS-IS router will generate multiple LSP fragments to carry more IS-IS information.
IS-IS LSP fragmentation by LSP LS in IDP Number field for identification, the length of this field is 1 byte. Therefore, an IS-IS process can generate up to 256 LSP fragments, which carry a limited amount of information. As specified in RFC3786, IS-IS can configure virtual SystemID , and generate virtual IS- IS LSPs to carry routing and other information.



existingRoute-policy is as follows:
ip community-filter 1 permit 100:1 ip as-path-fiter 2 permit ^100$ route-policy test permit node 10 if- match community-filter 1
if-match as-path-fiter 2
apply as-path 200
Which of the above configuration descriptions is correct?

  1. Only when the BGP route carries the community attribute value of 100:1 or the AS-PATH is 100, The BGProad will match the aboveroute The AS-PATH attribute of the -policy matching route will be changed to 200
  2. Only when the BGP route carries the community attribute value of 100:1 and the AS- When PATH is 100, the BGP route will match the aboveThe AS-PATH property of route-policy matching routes will be changed to 200
  3. Only when the BGP route carries an AS-PATH of 100, the BGP route will match the aboveroute- policy. AS_ that matches the route The PATH property will be changed to200
  4. As long as the BGP route carries the community attribute value of 100:1, the BGP routeroad will match the aboveroute-policy matches the AS-PATH attribute of the routeSex will be changed to 200

Answer(s): B

Explanation:

In a routing policy node, if you do not configure ifThe -match clause indicates that the routing information is successfully matched on this node.
If you configure one or more if-match clause, the relationship between each if-match clause is "and", that is, the routing information must satisfy all if-match clauses at the same time, and the node is considered to be successfully matched.
but the command if-match as-path-filter, if-match community-filter, if-match extcommunity-filter, if- match interface and if-match With the exception of route-type, the if-match clauses of these five commands are in an "or" relationship, and they are still related to the if-match clauses of other commands.It is an "and" relationship.
just the same ifBetween -match, and between different if-matches.



During ISIS's broadcast network database synchronization process, which of the following statements is true? (single choice)

  1. As DIS, R2 periodically sends CSNP.
  2. R2 acts as DIS, and the Hello time is three times that of ordinary routers.
  3. R2 as DIS will not receive PSNP requests from other routes.
  4. R1 and R3 maintain database consistency by periodically sending PSNP requests.

Answer(s): A



Two routers, connected together through serial ports, However, the interconnection cannot be pinged. Now check the port status as follows



Can you identify the cause from the above information? (Single Choice)

  1. Insufficient link bandwidth
  2. IP addresses at both ends are not on the same network segment
  3. Inconsistent link layer protocols at both ends
  4. Subnet mask mismatch

Answer(s): C

Explanation:

Different link layer protocols, R1 is HDLC, R2 is PPP



Viewing Page 10 of 97



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