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Question 1
In a multi-area OSPF network with three ABRs connecting area 0 to a regular area 1, which Type-3 LSA originator advertises the area 1 inter-area routes into the backbone?
Correct Answer:
Each ABR independently floods Type-3 LSAs into area 0 summarizing area 1 prefixes
Question 2
On a Huawei NE router, OSPF Graceful Restart (GR) helper mode allows the helper neighbor to do which of the following during the restarting router's GR period?
Correct Answer:
Continue forwarding to the restarting router and suppress topology changes for the GR grace period
Question 3
On an Ethernet broadcast segment with five OSPF routers, why is the DR/BDR election necessary?
Correct Answer:
To reduce the number of full adjacencies from O(n^2) to O(n) and limit LSA flooding overhead
Question 4
Which OSPF authentication method on Huawei devices is recommended for high-security deployments and uses a per-packet keyed hash with replay protection?
Correct Answer:
HMAC-SHA256/HMAC-MD5 with cryptographic-authentication and key chain
Question 5
In IS-IS, what is the difference between a multi-instance and a multi-topology deployment?
Correct Answer:
Multi-instance runs separate IS-IS processes/databases on the same router; multi-topology (MT) runs one process with separate topologies (e.g., IPv4, IPv6) using TLVs 222/229
Question 1
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Prepare with the Huawei HCIE-Datacom Practice Questions - Huawei Certified ICT Expert - Datacom (Written H12-891+ Lab) Exam practice quiz. This question bank includes 100 questions covering huawei, mpls, evpn, ospf, and router. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Huawei HCIE-Datacom Practice Questions - Huawei Certified ICT Expert - Datacom (Written H12-891+ Lab) Exam

This practice set contains 100 questions from the matching question bank and focuses on huawei, mpls, evpn, ospf, and router. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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