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Huawei H12-821_V1.0 Exam Questions

Huawei H12-821_V1.0 Exam Questions Answers

HCIP-Datacom-Core Technology V1.0

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Huawei H12-821_V1.0 Practice Test Questions ( Updated) – Real Exam Questions & Dumps PDF

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Huawei H12-821_V1.0 Sample Questions – Free Practice Test & Real Exam Prep

Question #1

On a Huawei router, if no ACL is configured or an ACL is configured but no ACL rule is configured, the ACL matching result is Unmatched. 

  • A. TRUE 
  • B. FALSE 
Answer: A
Question #2

Which of the following is used as the destination port for single-hop BFD?

  •  A. UDP port 3784 
  • B. UDP port 4784 
  • C. TCP port 3784 
  • D. TCP port 4784 
Answer: A
Question #3

On a broadcast network, IS-IS elects a DIS, and OSPF elects a DR. Which of the following statements are true about the differences between a DIS and a DR? 

  • A. The DIS and DR provide different functions. The DIS is mainly used to create and update pseudonodes.
  •  B. Adjacency establishment in a DIS scenario is different from that in a DR scenario. In ISIS, adjacencies are also established between non-DIS routers. 
  • C. The DIS and DR are elected according to different rules. In DIS election, devices first compare priorities and then IP addresses. In DR election, devices first compare IP addresses and then priorities. 
  • D. DIS election and DR election take place at different times. The DIS is elected after an adjacency is established. 
Answer: A,B,D 
Question #4

On an IS-IS network, Level-1 routers can access the IS-IS backbone area only through Level-1-2 routers.

  •  A. TRUE 
  • B. FALSE 
Answer: A 
Question #5

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 fromR1 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)

  • A. IIH
  • B. CSNP
  • C. PSNP
  • D. LSP
Answer: A, B, C, D
Question #6

After a BGP device establishes a peer relationship, it advertises routes. Which of the following statements are true about BGP route advertisement? 

  • A. Routes obtained from EBGP peers are advertised to all peers.
  •  B. When routes are updated, the BGP device sends all BGP routes.
  •  C. When there are multiple valid routes to the same destination, a BGP device advertises only the optimal route to its peers. 
  • D. Routes obtained from an IBGP peer are not sent to other IBGP peers. 
Answer: A,C,D
Question #7

IGMPV3 not only supports IGMPv1 General Query and IGMPv2 Group-Specific Query, and also IGMPv3 Source/Group-Specific Query. 

  • A. TRUE 
  • B. FALSE 
Answer: A
Question #8

Which of the following configurations are not mandatory when an administrator configures VRRP? 

  • A. Preemption mode 
  • B. Preemption delay 
  • C. Virtual router priority 
  • D. Virtual IP address 
Answer: A,B
Question #9

OSPF has five types of packets, which have the same header format. If the Auth Type field in the packet header is 1, which of the following authentication modes is used? 

  • A. Non-authentication 
  • B. MD5 authentication 
  • C. Plaintext authentication 
  • D. Hash authentication 
Answer: C
Question #10

Which of the following routing protocols support the default route through command configuration? 

  • A. BGP 
  • B. IS-IS
  •  C. OSPF 
  • D. ICMP 
Answer: A,B,C
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