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

Comprehensive and Detailed In-Depth Explanation:

The telemetry protocol stack is structured as follows:

Communication layer (A): Manages data transmission between the telemetry client (device) and the server.

Transport layer (B): Uses protocols such as gRPC, HTTP/2, or TCP to transmit telemetry data.

Data encoding layer (C): Encodes data using formats like JSON, Protobuf, or XML.

The Data analysis layer (D) is not part of the telemetry protocol stack itself.

Data analysis typically occurs after the data has been collected and received on the server or collector.

Telemetry focuses on data collection, encoding, transport, and transmission, not on analysis.

Therefore, the correct answer is D.

Huawei Open Programmability System (OPS) is a programmable network architecture that uses RESTful APIs. In RESTful operations:

GET → Retrieve data

PUT → Configure/replace the value of a managed object

POST → Create new resources or perform non-idempotent operations

PATCH → Partially update a resource

When configuring or updating the value of a managed object (fully replacing it), PUT is the correct method.

Exact Extract – Huawei OPS and RESTful API Guide:

“The PUT method is used to configure the value of a managed object, replacing the entire object if it exists.”

MP-BGP is an extension of BGP-4 that supports multi-protocol address families such as IPv6, VPNv4, etc. When PE and CE exchange BGP routes, there is no need to create a BGP process per VPN on the CE. The CE typically runs a standard BGP process, while the PE maintains separate VPN routing tables (VRFs).

Exact Extract - Huawei HCIE-Datacom MP-BGP Chapter:

“CE devices use standard BGP, and multiple VPNs can share the same BGP process on the CE. The PE handles VPN route separation through VRFs and MP-BGP.”