Huawei H35-210_V2.5 Practice Test - Questions Answers

Comprehensive and Detailed Step by Step

B (Correct):VLANIF interfaces enable Layer 3 routing between VLANs on the same switch.

D (Correct):Hybrid/Trunk ports allow tagged traffic to pass between switches.

A (Incorrect):Smart Link provides link redundancy, not inter-VLAN routing.

Huawei's broadband access network devices are designed to support multiple technologies for providing connectivity to end users. These devices primarily include:

Copper Line Access Devices : These devices use xDSL (Digital Subscriber Line) technology, which is widely used for broadband access over traditional telephone lines. Examples include ADSL, VDSL, and G.fast.

Optical Access Devices : These devices use PON (Passive Optical Network) technology, which is a fiber-optic-based access technology. GPON (Gigabit Passive Optical Network) and XGS-PON (10-Gigabit Symmetric Passive Optical Network) are examples of PON technologies.

The statement aligns perfectly with the HCIA Huawei ACCESS documentation, which emphasizes the role of access-layer devices in supporting both copper and fiber-based technologies.

HCIA Huawei ACCESS Official Documentation , Chapter: Access Technologies Overview.

GPON and xDSL Technology Whitepaper by Huawei.

GPON (Gigabit Passive Optical Network) is a fiber-optic access technology that integrates seamlessly with VoIP (Voice over IP) technology to provide voice services alongside data and video services. This integration allows GPON to support triple-play services (voice, data, and video) over a single fiber infrastructure.

xDSL : Refers to copper-based technologies and is not directly integrated with GPON.

Ethernet : While GPON uses Ethernet frames for data transmission, it is not the primary integration point for application scenarios.

WLAN : Wireless LAN is a separate technology and not directly integrated with GPON.

VoIP : Voice over IP is a key application scenario for GPON, enabling high-quality voice services over fiber-optic networks.

This is explicitly mentioned in the HCIA Huawei ACCESS documentation, which highlights the role of GPON in delivering converged services, including VoIP.

HCIA Huawei ACCESS Official Documentation , Chapter: GPON Technology and Applications.

Triple-Play Services in GPON Networks by Huawei.

The transport layer in the OSI model is responsible for end-to-end communication and includes two main protocols: TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) .

IP (Internet Protocol) : Works at the network layer and is responsible for routing packets across networks.

ARP (Address Resolution Protocol) : Works at the network layer and maps IP addresses to MAC addresses.

TCP : A connection-oriented protocol at the transport layer that ensures reliable communication through acknowledgments and retransmissions.

UDP : A connectionless-oriented protocol at the transport layer that provides faster but less reliable communication compared to TCP.

Since the question specifies a connectionless-oriented protocol at the transport layer, the correct answer is UDP .

HCIA Huawei ACCESS Official Documentation , Chapter: Transport Layer Protocols.

TCP/IP Protocol Suite Overview by Huawei.

Let us analyze each option:

Option A : Incorrect. A route does not include MAC addresses. It typically consists of a destination network, subnet mask, next-hop address, and outgoing interface.

Option B : Correct. IP routes are essential for guiding the forwarding of IP packets from the source to the destination. Routers use routing tables to determine the best path for packet delivery.

Option C : Incorrect. Routing is a concept at the network layer (Layer 3) of the OSI model, not the data link layer (Layer 2).

Option D : Incorrect. A route does not require the source address. It only needs the destination network, subnet mask, and next-hop information.

Thus, the correct answer is B .

HCIA Huawei ACCESS Official Documentation , Chapter: IP Routing Basics.

Routing Fundamentals in IP Networks by Huawei.

When a router forwards packets, it selects the route with the longest prefix match (most specific route) for the destination address.

First Route : Matches 9.0.0.0/8, which covers all IP addresses starting with 9.

Second Route : Matches 9.1.0.0/16, which is more specific and covers IP addresses starting with 9.1.

For the destination address 9.1.4.5 , the second route (9.1.0.0/16) is a better match because it is more specific than the first route (9.0.0.0/8).

Option A : Incorrect. OSPF has a higher priority, but the longest prefix match takes precedence over priority.

Option B : Correct. The second route matches the destination address more accurately.

Option C : Incorrect. Metric is not considered when comparing routes with different prefix lengths.

Option D : Incorrect. Interface speed is irrelevant in route selection.

HCIA Huawei ACCESS Official Documentation , Chapter: IP Routing Table Selection.

Routing Principles and Longest Prefix Match by Huawei.

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.