Huawei HCIA-Datacom Exam H12-811-ENU
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Questions and Answers

If there is no configuration file in the default storage path, what will the router use for initialization?

  • Current configuration
  • Initial configuration
  • New configuration
  • Default parameters (correct)

Which WLAN security policies support the link authentication method of Open mode? (Multiple Choice)

  • WEP (correct)
  • WPA (correct)
  • WPA2-802.IX (correct)
  • WPA2-PSK

Any link layer protocol requires ARP messages to assist in obtaining data link layer identification.

False (B)

The Backup ports in RSTP may alternatively fail root port.

<p>False (B)</p> Signup and view all the answers

If the transport layer protocol is UDP, the value of the network layer Protocol field is 6.

<p>True (A)</p> Signup and view all the answers

Which of the following statements is correct? (Multiple Choice)

<p>Host point and host B cannot ping (A), Data frames on the two links do not contain VLAN TAG (C), The PVID of the switch GigabitEthernet0/0/1 port is 20 (D)</p> Signup and view all the answers

What is the main function of the DHCP DISCOVER message?

<p>The client is used to find the DHCP server.</p> Signup and view all the answers

OSPF will automatically elect one DR and multiple BDRs to achieve better backup results.

<p>False (B)</p> Signup and view all the answers

Which of the following two interfaces can achieve link aggregation?

<p>G0/0/3 and G0/0/1 (D)</p> Signup and view all the answers

If a user needs to be authenticated in the authentication domain 'huawei', what will be used?

<p>If 'au1' is deleted, 'au2' authentication will be used.</p> Signup and view all the answers

For multiple paths to the same destination network, if the Preference is the same, select according to the magnitude of the Cost value.

<p>True (A)</p> Signup and view all the answers

UDP cannot guarantee the reliability of data transmission, and does not provide functions such as message sequencing and flow control.

<p>True (A)</p> Signup and view all the answers

Telnetlib is a module that implements the Telnet protocol that comes with Python.

<p>True (A)</p> Signup and view all the answers

Every time an IP packet passes through a router, its TTL value will be reduced by 1.

<p>True (A)</p> Signup and view all the answers

If the switch receives a unicast data frame and the destination MAC is in the MAC table, what will happen next?

<p>The data frame will be forwarded from the specified port.</p> Signup and view all the answers

Flashcards

HCIA-Datacom Exam Code

The code for the HCIA-Datacom certification exam is H12-811-ENU.

Router Configuration Initialization

When powered on, routers load configurations from a default path or use default parameters if absent.

WLAN Open Mode Authentication

Open mode link authentication supports WEP, WPA2-802.1X, and WPA, but not WPA2-PSK.

ARP Packet Characteristics

ARP replies are unicast; requests are broadcast; they cannot cross broadcast domains.

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RSTP Backup Ports

In RSTP, backup ports cannot act as root ports in the topology.

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UDP Protocol Identification

UDP is recognized by a protocol value of 17, contrasting with TCP's 6.

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PVID Function in Switches

PVID on GigabitEthernet0/0/1 port is set to 20; no VLAN tags on frames.

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DHCP DISCOVER Message Use

Clients utilize the DHCP DISCOVER message to find a DHCP server.

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OSPF in Broadcast Networks

In broadcast networks, one Designated Router (DR) and one Backup Designated Router (BDR) are elected.

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Link Aggregation Definition

Link aggregation combines interfaces G0/0/3 and G0/0/1 for increased bandwidth.

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Huawei Router Authentication Default

Huawei routers default to authentication mechanism 'au1' unless removed, then fall back to 'au2'.

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Route Preference in Path Selection

Routes are selected based on preference values; if equal, cost value is the tie-breaker.

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UDP Reliability Characteristics

UDP lacks reliability, sequencing, and flow control; suitable for low-reliability, high-speed needs.

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Telnetlib Module Purpose

Telnetlib is a built-in Python module for implementing Telnet protocol communications.

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TTL Field Functionality

TTL (Time to Live) limits packet hops before discard, decreasing by 1 at each router.

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Unicast Frame Forwarding Process

Switches forward unicast frames based on the destination MAC address in the MAC table.

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Study Notes

HCIA-Datacom Exam Overview

  • Exam Code: H12-811-ENU
  • Exam Name: HCIA-Datacom V1.0
  • Certification Provider: Huawei
  • Version: v2024-02-23
  • Notable Statistics: 131 views, 1430 questions viewed

Router Initialization

  • When powered on, the router reads the configuration file from the default storage path.
  • If no configuration file is present, the router initializes using default parameters.

WLAN Security Policies

  • Open mode link authentication supports:
    • WEP
    • WPA2-802.1X
    • WPA
  • WPA2-PSK is not supported.

ARP Message Characteristics

  • ARP replies are sent as unicast packets.
  • ARP packets cannot be forwarded across broadcast domains.
  • ARP requests are sent via broadcast.

RSTP Backup Ports

  • Backup ports in RSTP cannot serve as root ports.

UDP Protocol Characteristics

  • UDP is identified with a protocol value of 17, not 6.

Switch Configuration and Host Communication

  • PVID of GigabitEthernet0/0/1 port is 20.
  • Data frames on the two links do not contain VLAN TAG.
  • Host A and Host B cannot communicate via ping.

DHCP DISCOVER Message Purpose

  • The DHCP DISCOVER message is used by the client to locate a DHCP server.

OSPF Configuration in a Broadcast Network

  • In a broadcast OSPF network, only one DR and one BDR are elected for efficient management.
  • G0/0/3 and G0/0/1 interfaces can achieve link aggregation.

Authentication on Huawei Routers

  • Authentication mechanism defaults to au1 unless deleted; then, au2 will be used.

Route Preference and Path Selection

  • Route preference values are compared for path selection to the same destination.
  • If preferences match, route selection is based on the cost value.

UDP Reliability

  • UDP does not ensure reliable data transmission and does not feature sequencing or flow control.
  • It is ideal for low-reliability but high-speed and low-delay transmission needs.

Telnetlib Module in Python

  • Telnetlib is a built-in Python module for implementing the Telnet protocol.

TTL Field in IP Packet Header

  • TTL (Time to Live) specifies the maximum number of hops a packet can make before being discarded.
  • TTL value diminishes by 1 with each router passage.

Unicast Frame Forwarding

  • A switch forwards unicast data frames based on the destination MAC address found in its MAC table.

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Related Documents

1 Huawei.H12-811-ENU.v2024-02-23 2 - good sht.pdf

Description

Prepare for the Huawei HCIA-Datacom V1.0 certification with this comprehensive quiz based on the H12-811-ENU exam code. This quiz includes various practice questions to test your knowledge and readiness for the certification. Stay ahead in your networking career by mastering the essential concepts.

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