Get Huawei H35-210_V2.5 Exam Practice Questions - Real and Updated

Answer : B

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 .

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

OLT Configuration Guide by Huawei.

Answer : D

The Address Resolution Protocol (ARP) is used to map IP addresses to MAC addresses in a local network. ARP operates at the data link layer (Layer 2) of the OSI model and is essential for communication within a LAN.

ARP Request :

When a device needs to communicate with another device on the same network but does not know the destination's MAC address, it sends an ARP Request .

Since the sender does not know the MAC address of the destination, it cannot send the request directly to the destination using unicast. Instead, the ARP Request is sent as a broadcast packet to all devices on the local network.

The broadcast packet has a destination MAC address of FF:FF:FF:FF:FF:FF, which ensures that all devices on the network receive the packet.

ARP Response :

The device with the matching IP address responds with an ARP Reply , which is sent as a unicast packet back to the requesting device.

Why Not Other Options?

Anycast : This involves sending packets to the nearest device in a group of devices sharing the same IP address. ARP does not use anycast.

Unicast : ARP Requests cannot be sent as unicast because the sender does not yet know the destination's MAC address.

Multicast : Multicast is used for sending packets to a specific group of devices, but ARP Requests are sent to all devices on the network, making broadcast the correct choice.

Thus, ARP Requests are transmitted as broadcast packets .

HCIA Huawei ACCESS Official Documentation , Chapter: ARP Protocol and Operation.

Ethernet Networking Fundamentals by Huawei.

Answer : B

Answer : C

SNMP Trap Source Address :

The trap source address is the IP address used by the device to send SNMP traps to the NMS (Network Management System).

Configuration Options :

Option A : Setting the trap source address to 127.0.0.1 (localhost) is incorrect because it is not routable and cannot be used for communication with the NMS.

Option B : Using the loopback address is possible but not recommended unless the NMS is explicitly configured to accept traps from the loopback address.

Option C : Setting the trap source address to the same address used by the NMS to add the device ensures proper communication and alignment between the device and NMS.

Option D : Incorrect because not all options are valid.

Why C?

Configuring the trap source address to match the address used by the NMS ensures that the NMS can correctly identify and process traps from the device.

Thus, the correct answer is C .

HCIA Huawei ACCESS Official Documentation , Chapter: SNMP Configuration.

RFC 3411: SNMP Framework .

Answer : A, B, C

ONT Line Profile Overview :

An ONT line profile defines the mapping and configuration of services for an ONU (Optical Network Unit) on the OLT.

Key Parameters :

Mapping between GEM ports and data packets : Specifies how data packets are mapped to GEM (GPON Encapsulation Method) ports for transmission.

GEM ports : Logical ports used to encapsulate and transmit data over the GPON network.

T-CONT (Transmission Containers) : Allocates upstream bandwidth for different service flows.

Number of Ethernet ports on the ONT : This is a hardware attribute of the ONT and is not defined in the line profile.

Why A, B, C?

These parameters are directly related to the configuration of services and are included in the ONT line profile.

The number of Ethernet ports is unrelated to the line profile and is determined by the ONT hardware.

Thus, the correct answers are A, B, C .

HCIA Huawei ACCESS Official Documentation , Chapter: ONT Line Profiles.

GPON Service Configuration Guide by Huawei.