Huawei H12-821 Online Practice Questions and Exam Preparation

Huawei H12-821 Online Questions & Answers

• Question 1:

  DRAG DROP

  OSPF networks are classified into four types of networks by link layer protocol. Drag the following link layer protocols to the corresponding network types.(Token is reusable)

  Select and Place:

  

  

• Question 2:

  DRAG DROP

  Match the following IPv4 multicast protocols with the corresponding functions.

  Select and Place:

  

  

• Question 3:

  DRAG DROP

  Huawei modular devices have multiple hardware modules that provide different functions. Match the following hardware modules with their functions.

  Select and Place:

  

  

• Question 4:

  DRAG DROP

  Please match the following hardware modules with the corresponding functions.

  Select and Place:

  

  

• Question 5:

  DRAG DROP

  To enable PC1 to access PC2 using the IP address of the firewall's GE0/0/2, you need to configure NAPT for source address translation. In the following figure, fill in the blank to complete the command.

  

  Select and Place:

  

  

• Question 6:

  DRAG DROP

  In VRRP networking, devices assume the Master and Backup roles after election. Match the two roles with their working mechanisms.(Token is reusable)

  Select and Place:

  

  

• Question 7:

  On a P2P IS-IS network, after a neighbor relationship is established between R1 and R2, R2 finds that its LSDB is not synchronized. Then, R2 requests corresponding LSPs from R1 for LSDB synchronization. The following figure shows the synchronization process. Drag the following packet types to the steps in which they are used.(Token is reusable)

  Check the explanation
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  explanation:

  Explanation

  Explanation of IS-IS Packet Types and Synchronization Process:

  In the given scenario, R2 requests LSPs from R1 to synchronize its Link State Database (LSDB). The following IS-IS packet types are involved in this synchronization process:

  1.P2P IIH (Point-to-Point IS-IS Hello):

  Purpose: Establishes and maintains IS-IS neighbor relationships.

  Step: This packet is exchanged initially to detect and maintain the adjacency between R1 and R2.

  2.PSNP (Partial Sequence Number PDU):

  Purpose: Requests missing or outdated LSPs (Link State PDUs) from a neighbor to synchronize the LSDB.

  Step: In this case, R2 sends a PSNP to R1 to request the missing or outdated LSP.

  3.LSP (Link State PDU):

  Purpose: Contains routing information and is used to update the LSDB.

  Step: R1 sends the requested LSPs to R2 for synchronization.

  4.CSNP (Complete Sequence Number PDU):

  Purpose: Lists all LSPs in the sender's LSDB to help neighbors verify and request missing LSPs.

  Step: R1 sends a CSNP during retransmission timeout to notify R2 of its LSPs.

• Question 8:

  An IP prefix list is configured on a router using the following command:

  ip ip-prefix huawei index 10 permit 10.1.1.0 24 greater-equal 26

  In this case, the value of greater-equal-value is ____, and the value of less-equal-value is ____.

  greater-equal-value: 26 , less-equal-value: 32

  Check the explanation
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  explanation:

  Explanation

  1.Understanding Prefix List Configuration:

  The command ip ip-prefix huawei index 10 permit 10.1.1.0 24 greater-equal 26 defines a prefix filter:

  The base prefix is 10.1.1.0/24. The greater-equal 26 condition specifies that the mask length of matching prefixes must be at least 26 bits .

  If the less-equal parameter is not explicitly defined, the default value is 32 , meaning the longest possible mask length for IPv4.

  2.Explanation of Values:

  greater-equal-value: Specifies the minimum mask length. In this case, the value is 26 .

  less-equal-value: Specifies the maximum mask length. Since it is not explicitly configured, the default value is 32 .

  3.Summary:

  greater-equal-value = 26

  less-equal-value = 32

• Question 9:

  When the OSPF-enabled router is in the Init state, the destination address of the Hello packet is ___. (Please fill in the dotted decimal IP address)

  255.255.255.255

• Question 10:

  To configure OSPF area 10 as a Totally NSSA area, the command to be configured is: [Huawei]ospf 1 [Huawei-ospf-1]area 10 [Huawei-ospf-1-area-0.0.0.10]nssa_______ (Please fill in lowercase English, no spaces, and use correct symbols)

  no-summary