Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 801:

  IS-IS supports the processing and computation of IPv6 routes by adding TLVs to carry IPv6 addresses and reachability information.

  A. TRUE
  B. FALSE
  A. TRUE

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  Explanation

• Question 802:

  In inter-domain packet filtering, which of the following options belongs to the outbound direction?

  A. trust → local
  B. untrust → dmz
  C. trust → untrust
  D. untrust → trust
  C. trust → untrust

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• Question 803:

  If the OSPF protocol is running in the network, after configuring a non-OSPF area in the OSPF region as the Totally Stub area, the ABR router sends a message to the Totally Stub area and issues an LSA with an LSID of 0000. To which category does the LSA belong?

  A. LSA3
  B. LSA1
  C. LSA5
  D. LSA2
  A. LSA3

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• Question 804:

  SR-MPLS uses IGP extensions to advertise labels and reserve bandwidth to support high-bandwidth services.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 805:

  Which of the following statements about configuring user access authentication is incorrect?

  A. To implement network access control on users, you need to determine the domains to which they belong and the AAA schemes that they use.
  B. You can configure an 802.1X access profile, a MAC access profile, a Portal access profile, or a multi-mode authentication profile based on the actual authentication requirements on the network.
  C. If the RADIUS or HWTACACS server is used for authentication, you need to configure parameters for interconnection with the authentication server in the AAA scheme.
  D. You need to bind an access profile to an authentication profile to specify the user authentication mode. Then, apply the authentication profile to an interface to enable network access control.
  D. You need to bind an access profile to an authentication profile to specify the user authentication mode. Then, apply the authentication profile to an interface to enable network access control.

• Question 806:

  After you divide an interface of the firewall into the Untrust security domain, the interface belongs to the Untrust zone and no longer belongs to the Local zone.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 807:

  How long is an IPv6 prefix assigned to a host when an IPv6 address is configured for the host in SLAAC mode?

  A. 64 bits
  B. 32 bits
  C. 96 bits
  D. 128 bits
  A. 64 bits

• Question 808:

  Which of the following statement about the BFD one-arm echo function is correct? (Choose two)

  A. The BFD one-arm echo function must be configured with local identifiers and peer identifiers
  B. The default destination IP address for the protocol message for BFD one-arm echo is 224.0.0.184
  C. After the BFD one-arm echo function is enabled, the destination IP and source IP of the BFD message are identical
  D. The BFD one-arm echo function is suitable for scenarios where one device supports BFD and the other device does not
  C. After the BFD one-arm echo function is enabled, the destination IP and source IP of the BFD message are identical
  D. The BFD one-arm echo function is suitable for scenarios where one device supports BFD and the other device does not

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  Explanation

• Question 809:

  Which field in the IPv6 basic header has a similar effect to which field in the IPv4 header does?

  A. Flags
  B. Protocol
  C. Time to Live
  D. Identification
  C. Time to Live

• Question 810:

  Regarding the DSCP field, which of the following statement is incorrect?

  A. The DSCP value can be 0, and packets use the default forwarding mechanism when it is 0
  B. When the value of DSCP is EF, it indicates that the data belongs to the accelerated forwarding class
  C. In addition to indicating the priority of the data, DSCP can also indicate the probability of data being discarded
  D. The CS class in DSCP divides data into 8 priorities
  B. When the value of DSCP is EF, it indicates that the data belongs to the accelerated forwarding class

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