Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 591:

  Network Quality Analysis (NQA) is a real-time network performance detection and measurement technology. It monitors the performance of multiple protocols running on a network. Which of the following protocols can be monitored by NQA?

  A. SNMP
  B. OSPF
  C. ICMP
  D. DHCP
  C. ICMP

• Question 592:

  Which of the following descriptions of the PPPoE data frame is correct? (Choose two)

  A. Once a PPPoE session is established, all Ethernet packets are unicast.
  B. The Ethernet Type field is fixed to 0x8863.
  C. When PPPoE passes session data, the Code must be set to 0x0.
  D. The Session_ID of the PPP session is not allowed to change and must be specified in the Discovery phase.
  C. When PPPoE passes session data, the Code must be set to 0x0.
  D. The Session_ID of the PPP session is not allowed to change and must be specified in the Discovery phase.

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• Question 593:

  Which of the following descriptions about BGP aggregation is correct?

  A. After you configure aggregate ipv4-address mask, only aggregated routes are published, not detailed routes.
  B. For IPv6 routing, BGP supports manual aggregation and automatic aggregation.
  C. By default, BGP enables automatic aggregation.
  D. You can manually aggregate the routes in the BGP local routing table with a profile.
  D. You can manually aggregate the routes in the BGP local routing table with a profile.

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• Question 594:

  DRAG DROP

  Huawei Open Programmability System (OPS) uses standard HTTP methods to access managed objects and manage network devices. Drag each HTTP method on the left to its corresponding function on the right.

  Select and Place:

  

  

• Question 595:

  Which of the following are used in Ethernet? (Choose three)

  A. A MAC address in a non-canonical format
  B. CSMA/CD in multiplexed interviews
  C. MAC address in canonical format
  D. 802.5 encapsulated frames
  E. 802.3 encapsulated frames
  B. CSMA/CD in multiplexed interviews
  C. MAC address in canonical format
  E. 802.3 encapsulated frames

• Question 596:

  Which of the following inter-AS MPLS L3VPN solutions does not require MPLS to run between ASBRs?

  A. Option C
  B. Option D
  C. Option A
  D. Option B
  D. Option B

• Question 597:

  Two routers connected through a firewall cannot establish a BGP neighbor relationship. What is the cause?

  A. EBGP Multi-hop is not configured
  B. The firewall did not allow IP protocol number 89
  C. The firewall did not allow TCP port number 179
  D. BGP neighbors must form a Layer 2 adjacency
  C. The firewall did not allow TCP port number 179

• Question 598:

  Which of the following description about MPLS is incorrect?

  A. The length of the MPLS tag is 20 bits for packet forwarding.
  B. The tag space range of dynamic signaling protocols such as LDP, MP-BGP is 16 to
  C. When using the TTL processing method of Pipe mode, the IP packet transmits the TTL of the IP packet over the MPLS network. The value is only minus 1 for the MPLS in and out nodes.
  D. MPLS supports multi-layer label nesting, and the S bit value of the innermost label is 1.
  B. The tag space range of dynamic signaling protocols such as LDP, MP-BGP is 16 to

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• Question 599:

  Which of the following statements are correct? (Choose two)

  A. Unicast and broadcasting cannot effectively achieve data transmission between one source and multiple destinations on P2MP, but multicast technology can.
  B. Multicast technology is able to reduce redundant traffic, so network bandwidth can be saved.
  C. Multicast technology is used for "one-to-many" applications.
  D. Since multicast is based on TCP to establish a connection, multicast technology can ensure the reliable transmission of data.
  B. Multicast technology is able to reduce redundant traffic, so network bandwidth can be saved.
  C. Multicast technology is used for "one-to-many" applications.

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• Question 600:

  Which of the following description of LDP reliability is incorrect?

  A. LDP GR takes advantage of the separation between the LS forwarding plane and the control plane to ensure uninterrupted forwarding when the protocol restarts or when a master璼tandby switchover occurs
  B. Manually configured LDP FRR policies default to 32-bit backup routes that trigger LDP to establish backup LSPs
  C. LDP FRR also allows LSPs to be generated for label mappings from non-optimal next hops and serves as a live LSP backup, supervising forwarding table entries
  D. For LDP and IGP linkage, IGP must have completed routing convergence to ensure LDP and IGP path consistency
  B. Manually configured LDP FRR policies default to 32-bit backup routes that trigger LDP to establish backup LSPs