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  1. Home
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  3. H12-891_V1.0

Huawei H12-891_V1.0 Exam (page: 17)
Huawei HCIE-Datacom V1.0
Updated on: 15-Feb-2026

Viewing Page 17 of 123
H12-891_V1.0 PDF 610 Questions

The basic header length of an IPv6 message is a fixed value.

  1. TRUE
  2. FALSE

Answer(s): A



As shown in the following figure, a part of the LSDB LSDB of a router LSDB is shown in the first one in the following figure. A new LSP has been received, the second one in the figure
below, and the following statement is incorrect (single choice).

  1. this router will put the newly received LSP into the LSDB
  2. In the case of a broadcast network, DIS will include summary information for this LSP in the next CSNP message.
  3. This router ignores LSPs received from neighbors
  4. If it is a point-to-point network, the router will send PSNP

Answer(s): C



OSPF fast convergence is an extended feature to improve the convergence speed of routing, in which PRC works by speeding up routing computation by performing path calculations only on the affected nodes when the network topology changes.

  1. TRUE
  2. FALSE

Answer(s): B



The following message about OSPFV3 is correct?

  1. The Option field of the Hello and DD packets extends to 24-bit
  2. LSR packets containing the full LSA header information for requesting an update to the LSA
  3. The LSACK message contains LSA header information to confirm receipt of the LSU message
  4. The Hello message must contain the interface ID of the sending interface

Answer(s): A,C,D



As shown in the figure, three switches S1, SW, and SN3, where SWI is the root bridge, and
link congestion occurs between SI and SW2, SWD cannot receive the configuration BPDU sent by the root bridge, which spanning tree protection mechanism does the administrator need to configure to prevent the problem caused by link congestion?( Single choice questions).

  1. root protection
  2. PreventS TC-BPDU attacks
  3. BPDU Protection
  4. Loop Protection

Answer(s): D



Viewing Page 17 of 123



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