Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 701:

  Regarding the sliding window of TCP, which of the following descriptions are incorrect? (Choose two)

  A. The sender declares the initial window size
  B. The sender does not need to transmit messages of the full window size
  C. The TCP sliding window allows multiple packets to be sent before an acknowledgment is received
  D. After the retransmission timer times out, the sender has not received an acknowledgment and will retransmit unacknowledged data
  E. The receiver needs to acknowledge the sender's packet
  F. The sliding window size can only be increased or remain unchanged
  A. The sender declares the initial window size
  F. The sliding window size can only be increased or remain unchanged

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• Question 702:

  Which of the following statements about SR-MPLS Policy path planning are correct? (Choose three)

  A. When planning paths based on bandwidth, you need to set the available bandwidth of each interface in advance.
  B. When planning paths based on delay, you must deploy TWAMP or iFIT in advance to measure real-time network delay.
  C. If you use the controller to plan SR-MPLS Policy paths, only primary and backup paths can be deployed, and load balancing cannot be implemented for the primary path.
  D. When statically planning SR-MPLS Policy paths, you can plan load balancing for the primary path.
  A. When planning paths based on bandwidth, you need to set the available bandwidth of each interface in advance.
  B. When planning paths based on delay, you must deploy TWAMP or iFIT in advance to measure real-time network delay.
  D. When statically planning SR-MPLS Policy paths, you can plan load balancing for the primary path.

• Question 703:

  After the reset isis all command is run, the specified IS-IS process is reset and all related IS-IS neighbor relationships are re-established; however, IS-IS statistics are not cleared.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 704:

  Which of the following statements about SR-MPLS characteristics are correct? (Choose three)

  A. Only the controller can compute paths based on explicit paths.
  B. SR-MPLS supports smooth network evolution by extending existing protocols, such as IGPs.
  C. Efficient TI-LFA FRR protection is provided for fast path fault recovery.
  D. Such networks can quickly interact with upper-layer applications through the source routing technology.
  B. SR-MPLS supports smooth network evolution by extending existing protocols, such as IGPs.
  C. Efficient TI-LFA FRR protection is provided for fast path fault recovery.
  D. Such networks can quickly interact with upper-layer applications through the source routing technology.

• Question 705:

  When two devices with the same priority compete for the master role at the same time, the device whose interface has the smaller IP address should be selected as the master device.

  A. True
  B. False
  B. False

• Question 706:

  Which of the following factors does not need to be considered during the selection of core devices for the enterprise bearer WAN?

  A. Device naming conventions
  B. Service volume
  C. Physical location
  D. Node quantity
  A. Device naming conventions

• Question 707:

  Regarding the BGP confederation, which of the following descriptions is incorrect?

  A. The confederation divides an AS into sub-ASes, and external ASes still regard the confederation as a single AS
  B. Sub-ASes within a confederation can use private AS numbers. On Huawei NE/AR routers, a confederation can have up to 32 sub-ASes
  C. A confederation can easily detect routing loops within the AS because EBGP runs between sub-ASes
  D. The sub-AS number of the confederation is, by default, advertised to BGP peers outside the confederation
  D. The sub-AS number of the confederation is, by default, advertised to BGP peers outside the confederation

• Question 708:

  To obtain the token ID of iMaster NCE, you need to send an HTTP request message that includes the following Python code to invoke an iMaster NCE RESTful API:

  import requests

  nbi_name = "[email protected]"

  nbi_pwd = "CgocVcVe1@"

  host = "139.9.213.72"

  port = "18002"

  URI = "/controller/v2/tokens"

  post_token_url = "https://" + host + ":" + port + URI

  headers_post = {"Content-Type": "application/json", "Accept": "application/json"}

  r = requests.post(post_token_url, headers=headers_post,

  json={"userName": nbi_name, "password": nbi_pwd},

  verify=False)

  Which of the following statements is incorrect?

  A. You can run print(r.json()) to display the response message returned by the server.
  B. Token resources are located at https://139.9.213.72:18002/controller/v2/tokens.
  C. The request body is in JSON format.
  D. The HTTP request uses the GET method to query the token value.
  D. The HTTP request uses the GET method to query the token value.

• Question 709:

  Port isolation technology deployed in Ethernet can realize Layer 2 interoperability and Layer 3 isolation, making networking more flexible.

  A. TRUE
  B. FALSE
  B. FALSE

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  Explanation

• Question 710:

  Configure queue-based traffic shaping, which defaults to tail drop if the queue length exceeds the cache size.

  A. True
  B. False
  A. True

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