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

NETCONF defines datastores to manage device configurations:

running: Active configuration in use

candidate: Staging area for changes before applying

startup: Configuration loaded on reboot

NETCONF operations:

< commit > : Applies changes from candidate → running → ✅

< delete-config > : Deletes a specified datastore (e.g., startup) → ✅

< validate > : Validates syntax/logic in the candidate datastore → ✅

Statement D is incorrect: < commit > never submits config from startup to running — that’s handled automatically at boot time, not through NETCONF commands.

Correct answer: D

✅ Hypertext Transfer Protocol (HTTP) is an application-layer protocol used for:

Accessing web pages and hypermedia content.

Client-server communication over the internet.

Stateless communication with request-response architecture.

Key Features of HTTP:

Application Layer Protocol in the TCP/IP model.

Uses TCP (Port 80) and HTTPS (Port 443) for secure communication.

Supports REST APIs, web applications, and cloud services.

Reference from Huawei HCIE-Datacom Documentation:

Huawei Network Protocol Guide – HTTP and Web Services

HCIE-Datacom Study Material – Application Layer Protocols in TCP/IP Model

Let’s break it down:

A. ❌ Incorrect — Path computation can be done by both controller and ingress routers, not just the controller.

B. ✅ SR-MPLS extends IGP protocols (e.g., OSPF/IS-IS) for segment distribution, allowing smooth evolution.

C. ✅ Supports TI-LFA (Topology Independent Loop-Free Alternate) for fast failure recovery.

D. ✅ Through source routing, SR-MPLS integrates easily with applications for programmable path control.

Exact Extract – HCIE-Datacom Segment Routing Chapter:

“SR-MPLS supports distributed and centralized path computation, uses IGP extensions for deployment, and supports TI-LFA for FRR. It allows interaction with applications through programmable routing.”