Huawei H35-210_V2.5 Practice Test - Questions Answers, Page 2

MAC (Media Access Control) addresses are 48-bit identifiers assigned to network interfaces for communication on a local network.

Allocation of MAC Addresses :

MAC addresses are not allocated by the IETF . Instead, they are managed and assigned by the IEEE (Institute of Electrical and Electronics Engineers) .

The IEEE assigns blocks of MAC addresses to hardware manufacturers (vendors), who then assign unique MAC addresses to their devices.

Structure of MAC Addresses :

The first 24 bits (Organizationally Unique Identifier, OUI) identify the manufacturer.

The remaining 24 bits are assigned by the manufacturer to ensure global uniqueness.

Why FALSE?

The statement incorrectly attributes the allocation of MAC addresses to the IETF, which is responsible for Internet standards like TCP/IP, not MAC address allocation.

Thus, the correct answer is FALSE .

HCIA Huawei ACCESS Official Documentation , Chapter: MAC Addressing.

IEEE OUI Assignment Process .

VLANs (Virtual Local Area Networks) are used to logically segment a network into smaller broadcast domains. VLANs can be categorized using various methods:

Port-Based VLANs :

VLAN membership is determined by the switch port to which a device is connected.

Example: Ports 1--10 belong to VLAN 10, and ports 11--20 belong to VLAN 20.

Protocol-Based VLANs :

VLAN membership is determined by the protocol type (e.g., IPv4, IPv6, or AppleTalk) in the packet header.

MAC Address-Based VLANs :

VLAN membership is determined by the MAC address of the device.

Example: Devices with specific MAC addresses are assigned to VLAN 10.

Physical Location-Based VLANs :

VLANs are not categorized based on physical locations. While VLANs can be used to group devices in different physical locations, this is not a standard method of VLAN categorization.

Thus, the correct answer is C , as VLANs are not categorized based on physical locations.

HCIA Huawei ACCESS Official Documentation , Chapter: VLAN Technologies.

VLAN Segmentation Methods by Huawei.

Let us analyze each statement carefully:

Option A :

Incorrect : In inter-VLAN communication, hosts in different VLANs cannot directly communicate with each other because VLANs are isolated at Layer 2. Communication between VLANs requires a Layer 3 device (e.g., a router or Layer 3 switch).

Hosts do not learn the MAC addresses of devices in other VLANs. Instead, they communicate through a gateway (router or VLANIF interface), and the gateway handles the forwarding.

Option B :

Correct : A VLAN is indeed a broadcast domain . Devices within the same VLAN share the same broadcast traffic, while devices in different VLANs do not.

Option C :

Incorrect : A VLAN is not a collision domain. Collision domains are defined at the data link layer (Layer 2) and are associated with individual switch ports or hubs. VLANs are logical groupings that span multiple switch ports and do not represent collision domains.

Option D :

Correct : VLANIF interfaces (also called Switch Virtual Interfaces, SVIs ) are logical Layer 3 interfaces configured on switches to enable inter-VLAN routing. These interfaces allow communication between VLANs by acting as gateways for each VLAN.

Thus, the incorrect statements are A and C .

HCIA Huawei ACCESS Official Documentation , Chapter: VLAN Fundamentals.

Inter-VLAN Routing and VLANIF Interfaces by Huawei.

VLAN link types define how VLAN traffic is handled on switch ports. The three common VLAN link types are:

Access Ports :

Used to connect end devices (e.g., PCs, printers) to the switch.

An access port belongs to only one VLAN and carries untagged traffic for that VLAN.

Example: A PC connected to an access port in VLAN 10 sends and receives untagged traffic.

Trunk Ports :

Used to connect switches or routers to carry traffic for multiple VLANs.

Trunk ports tag traffic with VLAN IDs using IEEE 802.1Q encapsulation.

Example: A trunk port connecting two switches carries tagged traffic for VLANs 10, 20, and 30.

Hybrid Ports :

A hybrid port can carry both tagged and untagged traffic.

It is flexible and can be used for scenarios where a mix of tagged and untagged traffic is required.

Example: A hybrid port might send untagged traffic for VLAN 10 and tagged traffic for VLAN 20.

Mix :

This is not a standard VLAN link type and does not exist in Ethernet switch configurations.

Thus, the correct answers are A (Trunk) , B (Access) , and C (Hybrid) .

HCIA Huawei ACCESS Official Documentation , Chapter: VLAN Link Types.

IEEE 802.1Q VLAN Tagging Standards .

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 .

HCIA Huawei ACCESS Official Documentation , Chapter: Static Routing.

Routing Protocols and Static Routes by Huawei.

When configuring a static route, certain parameters are required for the route to function correctly. Let us analyze each option:

Option A :

Incorrect : The preference (or administrative distance) is optional. If not specified, the router uses the default preference value for static routes.

Option B :

Incorrect : While the next-hop IP address is commonly used in static route configuration, it is not always mandatory. For example, you can specify an outgoing interface instead of a next-hop address.

Option C :

Incorrect : The subnet mask is essential for defining the network prefix of the destination network. Without the mask, the router cannot determine the range of IP addresses covered by the route.

Option D :

Correct : The subnet mask is mandatory when configuring a static route. It defines the network portion of the destination IP address, enabling the router to match packets to the correct route.

Thus, the correct answer is D .

HCIA Huawei ACCESS Official Documentation , Chapter: Static Route Configuration.

IP Routing and Subnet Masks by Huawei.

The MA5600T/MA5680T is a Huawei Optical Line Terminal (OLT) device used in GPON networks. The status of the control board's indicator lights provides critical information about the device's operational state.

Option A :

Incorrect : If the green light is on and off repeatedly without a specific pattern, it may indicate an unstable or faulty state.

Option B :

Correct : A steady green light indicates that the control board is running properly and is in a normal operating state. This is the expected status for a healthy control board.

Option C :

Incorrect : A blinking pattern of 0.5s on and 0.5s off typically indicates that the control board is in a transitional state, such as booting up or initializing.

Option D :

Incorrect : A rapid blinking pattern of 0.25s on and 0.25s off usually signifies an alarm or error condition.

Thus, the correct answer is B , as a steady green light indicates normal operation.

HCIA Huawei ACCESS Official Documentation , Chapter: OLT Device Indicators.

MA5600T/MA5680T Maintenance Manual by Huawei.

An OLT (Optical Line Terminal) is a key component in fiber-optic access networks, particularly in GPON and XGS-PON systems. It serves multiple roles:

Switch or Router Role :

The OLT acts as a Layer 2/Layer 3 switch or router, aggregating traffic from multiple ONUs (Optical Network Units) and forwarding it to the core network.

Multi-Service Provisioning Platform :

The OLT supports multiple services, including Internet access (data), voice (VoIP), and video (IPTV). It integrates these services over a single fiber infrastructure, making it a versatile platform for service providers.

Why TRUE?

The statement accurately describes the OLT's functionality as both a switch/router and a multi-service provisioning platform.

Thus, the correct answer is A .

HCIA Huawei ACCESS Official Documentation , Chapter: OLT Functionality.

GPON System Architecture by Huawei.

GPON networks use various protection mechanisms to ensure high availability and reliability. These mechanisms are classified into different types based on their scope and functionality:

Type A :

Protects only the trunk fiber (between the OLT and the splitter).

Does not protect branch fibers (between the splitter and ONUs).

Type B :

Protects the trunk fiber but does not provide simultaneous protection for branch fibers.

Type C :

Provides full protection for both the trunk and branch fibers.

Uses redundant fibers and splitters to ensure continuity in case of a failure.

Type D :

Not a standard GPON protection type.

Since the question specifies protection for both the backbone (trunk) and branch fibers, the correct answer is Type C .

HCIA Huawei ACCESS Official Documentation , Chapter: GPON Protection Mechanisms.

GPON Redundancy and Protection Schemes by Huawei.