Huawei H12-891_V1.0 Exam With Confidence Using Practice Dumps

DiffServ QoS model operates on per-hop behavior (PHB) and has these limitations:

A. ✅ Single-hop behavior; no end-to-end path awareness.

B. ✅ Cannot guarantee dedicated resources to individual users.

C. ✅ Does not address traffic bursts; congestion is still possible.

D. ✅ Queue limitations hinder fine-grained SLA assurance and deterministic delay.

Exact Extract – HCIE-Datacom QoS Section:

“DiffServ provides PHB without path-level control. It cannot guarantee SLA for individual users due to limited queuing mechanisms and lack of end-to-end visibility.”

Comprehensive and Detailed In-Depth Explanation:

An HTTP response from the server to the client typically includes the following components:

Protocol version (C): Specifies the HTTP version used (e.g., HTTP/1.1).

Status code (B): Indicates the response result (e.g., 200 for OK, 404 for Not Found).

Reason phrase (A): A textual description associated with the status code (e.g., " OK " , " Not Found " ).

Headers and Body: Contain additional information and the actual response content.

URI (D): The Uniform Resource Identifier is part of the HTTP request and not the HTTP response. Therefore, D is the correct answer.

Intra-Area-Prefix-LSA (Type 9) is used in OSPFv3 to carry IPv6 prefix information for a router or network and is flooded within the area.

Link-LSA (Type 8) is only sent on the local link and is not flooded throughout the area.

Inter-Area-Prefix-LSA (Type 3) and Inter-Area-Router-LSA (Type 4) are also flooded within an area but originate from ABRs, typically for cross-area route advertisement.

That said, Intra-Area-Prefix-LSA is specifically flooded within an area, matching the context of the question directly.

Exact Extract - Huawei HCIE-Datacom OSPFv3 Module:

“Intra-Area-Prefix-LSAs are flooded within the area and advertise the IPv6 prefixes associated with router and network LSAs.”