Pass the Huawei HCIP-Access H35-210_V2.5 Questions and answers with ExamsMirror

Upstream Transmission Overview :

The MA5800 is a next-generation OLT platform that supports multiple upstream transmission options, including 10 GE (Gigabit Ethernet) and GE (Gigabit Ethernet).

Default Configuration :

By default, the upstream ports on the MA5800 are configured for 10 GE transmission. However, administrators can adjust the speed using the speed command to match the requirements of the interconnected device.

Matching Port Rates :

For successful communication, the upstream port rate on the MA5800 must match the rate of the port on the upper-layer device (e.g., switch or router). Mismatched rates can lead to communication failures.

Why TRUE?

The statement accurately describes the default configuration and the importance of matching port rates to ensure proper communication.

Thus, the correct answer is A .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: MA5800 Upstream Configuration.

MA5800 Product Manual by Huawei.

SNMP Structure Overview :

SNMP consists of three main components:

NMS (Network Management System) : The central system that manages and monitors devices.

Agent : A process running on the managed device that interacts with the NMS.

MIB (Management Information Base) : A database of manageable objects on the device.

Agent Functionality :

The Agent performs several key functions:

Responding to Requests : When the NMS sends a request (e.g., GET, SET), the Agent retrieves or modifies the requested information and responds.

Collecting Status Information : The Agent continuously monitors the device and updates the MIB with relevant data.

Executing Commands : The Agent executes commands issued by the NMS, such as restarting a service or applying configurations.

Reporting Alarms : The Agent sends traps (alarms) to the NMS when specific events occur (e.g., interface down, high CPU usage).

Why TRUE?

The statement accurately describes the role and functionality of the Agent in the SNMP structure.

Thus, the correct answer is A .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: SNMP Protocol.

RFC 3411: SNMP Framework .

Huawei OLT supports:

Transparent: No modification.

Translate: Replaces the VLAN ID.

ADSL Interleave Mode :

Interleave mode is used in ADSL to improve error correction by interleaving data bits before transmission.

This process introduces additional latency (delay) but enhances stability by reducing the impact of impulse noise.

Why B?

Better stability : Interleaving spreads errors across multiple frames, making it easier to correct them.

Longer delay : The interleaving process adds latency due to the time required to reorder data bits.

Other Options :

A : Incorrect because interleave mode improves stability, not worsens it.

C : Incorrect because interleave mode increases delay, not reduces it.

D : Incorrect because interleave mode improves stability.

Thus, the correct answer is B .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: ADSL Modes.

ADSL Interleaving and Fast Path by Huawei.

VLAN Tag Translation :

VLAN tag translation is used to modify VLAN tags in packets as they pass through the OLT.

The tag-transform parameter determines how VLAN tags are handled during service flow creation.

Behavior of tag-transform = default :

When tag-transform is set to default, the OLT applies predefined rules for VLAN tag conversion based on the SVLAN (Service VLAN) attributes.

These rules vary depending on the SVLAN type (e.g., Common, QinQ, Stacking), resulting in different behaviors.

Why TRUE?

The statement accurately reflects the behavior of the tag-transform parameter when set to default. Different SVLAN attributes lead to different tag conversion rules.

Thus, the correct answer is A .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: VLAN Tag Translation.

OLT Configuration Guide by Huawei.

Comprehensive and Detailed Step by Step Explanation:

A (Incorrect): XGS-PON encrypts the payload, not the entire packet.

Static routes are manually configured by network administrators and are not dynamically updated by routing protocols. Let us analyze each option:

Option A :

Correct : Static routes are manually added to the routing table by the administrator. They remain unchanged unless manually modified or removed.

Option B :

Incorrect : Static routes are not automatically recalculated when the network topology changes. If a static route becomes invalid due to a topology change, the administrator must manually update it.

Option C :

Incorrect : Static routes are not learned from other routing protocols. Routes learned from dynamic protocols (e.g., OSPF, RIP) are dynamic routes, not static routes.

Option D :

Incorrect : Static routes are not preconfigured on routers before delivery. They are configured by administrators based on the network design.

Thus, the correct answer is A .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: Static Routing.

Routing Protocols and Static Routes by Huawei.

Default Behavior of ONUs :

By default, ONUs (Optical Network Units) connected to the same PON port of a Huawei OLT are isolated at Layer 2 .

This isolation ensures that ONUs cannot communicate directly with each other, even if they belong to the same service VLAN.

Why FALSE?

The statement incorrectly claims that ONUs can communicate with each other at Layer 2 by default. In reality, Layer 2 isolation is a security feature designed to prevent unauthorized communication between ONUs.

Enabling Communication :

If Layer 2 communication between ONUs is required, it must be explicitly enabled through configuration (e.g., by disabling Layer 2 isolation).

Thus, the correct answer is B .

References:

HCIA Huawei ACCESS Official Documentation , Chapter: GPON Security Features.

OLT Configuration Guide by Huawei.