H12-891_V1.0 Exam Dumps : HCIE-Datacom V1.0

PQ (Priority Queuing) ensures low-latency services like voice and video are prioritized.

WFQ (Weighted Fair Queuing) fairly allocates remaining bandwidth to services like FTP.

Option B provides a balanced approach: guarantees for voice/video via PQ, and fairness for FTP via WFQ.

Exact Extract - Huawei HCIE-Datacom QoS Module:

“Voice and video traffic should be handled by PQ to minimize delay and jitter. Non-critical services such as FTP should be placed in WFQ queues to ensure bandwidth fairness.”

In OSPFv3, each LSA type has a defined flooding scope:

Link-LSA (Type 8)

Advertised only on the local link

Contains router’s link-local address and prefixes

Scope: Within the local link scope ✅

AS-External-LSA (Type 5)

Used to advertise external routes from outside the AS

Flooded across the entire autonomous system, except stub/NSSA areas

Scope: Within an AS ✅

Network-LSA (Type 2)

Generated by the Designated Router (DR)

Describes all routers on a broadcast or NBMA segment

Flooded within the originating area

Scope: Within an area ✅

Correct Mappings:

Link LSA → Within the local link scope

AS-External-LSA → Within an AS

Network-LSA → Within an area

The Protocol Trace function of iMaster NCE-CampusInsight allows O & M teams to analyze the full packet exchange process (e.g., DHCP, authentication, IP acquisition) between clients and the network. In this scenario, it helped pinpoint DHCP address pool exhaustion as the cause.

Exact Extract - Huawei iMaster NCE-CampusInsight Product Documentation:

“The Protocol Trace function visualizes packet-level interaction processes for DHCP, ARP, 802.1X, and others, allowing fast identification of root causes for network access issues.”