Cisco
CompTIA
ISC
EC-Council
EXIN
Fortinet
ITIL
Juniper
Microsoft
VMware
Avaya
SAP
Google
NVIDIA
Salesforce
Amazon
Palo Alto Networks
ISC2
Splunk
ServiceNow
All Vendors
  2. Home
  3. Exams
  4. Huawei
  5. H12-891

Huawei H12-891 Exam
HCIE-Datacom V1.0 (Page 13 )

Updated On: 9-Feb-2026
Page 13 of 123
PDF with 610 Questions

The following is an error in the OSPF routing calculation (single choice).

  1. Compared to the PRC algorithm, the ISPF algorithm only calculates the changed leaf nodes when the route changes PRC algorithm to recalculate routes
  2. When the first and second class LSAs on the network change, OSPF uses the ISPF algorithm to recalculate the routes The
  3. OSPF router uses the FULL SPF algorithm to calculate all nodes in the network when initially calculating routes

Answer(s): A



Which of the following DNS resource records are legitimate?

  1. FQDN
  2. NS
  3. PTR
  4. MX
  5. A

Answer(s): B,C,D,E



The address resolution feature for NDP in the following description is incorrect?

  1. When sending a neighbor request packet, the source address--is set as the link-local address
  2. of the local interface Two types of ICMPv6 messages,
  3. are used in the address resolution process, neighbor request and neighbor advertisement Address resolution implements the ability to resolve from IPv6 addresses to link-layer addresses
  4. When sending a neighbor request packet, the destination address must be the multicast address of the neighbor's requested node

Answer(s): A



Regarding the Stub region and the Totally Stub region of the OSPF protocol, the following statement is correct (multiple choice)

  1. After modifying the original Stub area to a Totally Stub area, the number of LSAs in the LSDB of each router in the region will definitely be reduced
  2. ASBR cannot be present in either the Stub zone or the Totally Stub zone
  3. When you modify the original Stub area to a Totally Stub region, the number of LSAs propagating within the region will definitely decrease
  4. If there are two ABR in the Totally Stub zone, each ABR sends an LS ID of 0000 to the router in the zone LSA

Answer(s): B,D



LDP and IGP linkage refers to the release of IGP and TD routes to ensure that LDP and IGP linkage complete network efficiency, so that KGP and LDP maintains a consistent path, minimizing traffic loss, thereby improving the reliability of the entire network.

  1. True
  2. False

Answer(s): A






Post your Comments and Discuss Huawei H12-891 exam prep with other Community members:

Join the H12-891 Discussion