H12-811_V1.0 Exam Dumps - Huawei HCIA-Datacom Questions and Answers

Comprehensive Explanation: SNMP (Simple Network Management Protocol) consists of several key components:

Management Information Base (MIB): A database containing the network management data.

Managed object: The individual objects (such as interfaces or devices) that SNMP manages.

Agent process: The software running on the managed device that reports data to the NMS.

NMS (Network Management System): The centralized system that collects data from managed devices using SNMP.

All these components work together to monitor, configure, and manage network devices.

MAC Address Analysis:

MAC addresses starting with 01-00-5E are reserved for IPv4 multicast by the IANA.

Why Other Options Are Incorrect:

A: The address is valid and reserved for multicast.

C: Broadcast addresses use FF-FF-FF-FF-FF-FF.

D: Unicast addresses are typically hardware-assigned and do not use this prefix.

References: HCIA-Datacom V1.0 Certification Guide, Chapter 7: Ethernet Basics.

Detailed Explanation:The default Router Dead Interval in OSPF is 40 seconds for broadcast and point-to-point networks. This interval defines the time period a router waits to receive hello packets before declaring a neighbor as down. (Reference: HCIA-Datacom Training Material, OSPF Hello and Dead Intervals)

Detailed Explanation:SNMPv3 is the version that focuses on security and administration. It offers features such as strong authentication and encryption to secure network management, along with enhancements in administration such as notifications and proxy forwarding​​.

In Huawei devices, advanced ACLs use a number range from 3000 to 3999. These ACLs allow more granular control over traffic by permitting conditions based on source and destination IP addresses, protocol types, and ports, making them suitable for complex filtering requirements​.

To form an EUI-64 address, the MAC address is split and FFFE is inserted in the middle, making the EUI-64 format 00E0-FCEF-FFFE-0FEC. Additionally, the 7th bit of the first byte is flipped to form the Modified EUI-64 address used in IPv6 for Stateless Address Autoconfiguration (SLAAC)​.

In trunk mode, the interface can forward frames tagged with VLANs specified in the allow-pass list (here, VLAN 100) without removing tags. However, if an untagged frame is received, it is assigned to the PVID (here, VLAN 200). This configuration allows both tagged and untagged traffic, with the PVID determining the VLAN for untagged frames​.

Routing Table and Equal-Cost Routes:When multiple routes to the same destination network have the same cost (e.g., metric or administrative distance), they are referred to as "equal-cost routes." Routers use load balancing to distribute traffic across these routes​​.

Analysis of Options:

Option A: "Sub-optimal routes" are routes that are not preferred due to higher cost or less desirable metrics.

Option B: "Multipath routes" is a general term but does not specify equal cost, making it less precise.

Option C: "Equal-cost routes" is correct as the scenario specifies the same destination network with the same cost.

Option D: "Default routes" are used when no specific route matches the destination, which is unrelated to the given scenario​.

Correct Answer:The routes are C (Equal-cost routes).