Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 661:

  OandM personnel for a large-scale event center receive feedback about Wi-Fi access failures. iMaster NCE-CampusInsight provides the function for personnel to view packet exchange processes and locate the root cause. It is found that IP addresses in the DHCP address pool are exhausted, preventing IP addresses from being assigned to mobile terminals.

  Which of the following functions is used by OandM personnel in this scenario?

  A. Simulation feedback
  B. Protocol trace
  C. Issue analysis
  D. Client journey
  B. Protocol trace

• Question 662:

  Which is the correct description of optimal routing election for each protocol in the following options?

  A. Route entries in BGP that are unreachable for the next hop are also placed in the IP routing table.
  B. In the BGP protocol, the best route to reach the same destination network is selected by comparing the cost values of the route entries.
  C. The OSPF protocol places all the routing information in the LSDB into the IP routing table.
  D. From BGP and OSPF, different route entries to reach the same destination network are learned, and the optimal route is selected to join the IP routing table by comparing the protocol's preference value..
  D. From BGP and OSPF, different route entries to reach the same destination network are learned, and the optimal route is selected to join the IP routing table by comparing the protocol's preference value..

  ---

  Explanation

• Question 663:

  In a scenario where SR Policies are dynamically established through the controller, which of the following statements about the SR Policy solution architecture is incorrect?

  A. The controller uses NETCONF to deliver configurations such as service interfaces and routing policies.
  B. The controller uses BGP-LS to collect tunnel topology information and computes SR Policy paths.
  C. The controller uses telemetry to deliver information such as SRv6 SIDs to construct SID entries.
  D. The controller uses BGP IPv6 SR Policy to deliver SR Policy information, such as the color, headend, and endpoint information.
  C. The controller uses telemetry to deliver information such as SRv6 SIDs to construct SID entries.

• Question 664:

  Which of the following statement about the IS-IS protocol is incorrect?

  A. The IS-IS protocol is a link-state protocol that runs between AS
  B. The IS-IS protocol supports CLNP networks
  C. Messages for the IS-IS protocol are encapsulated directly by the data link layer
  D. The IS-IS protocol supports IP network ad
  A. The IS-IS protocol is a link-state protocol that runs between AS

• Question 665:

  Which of the following description about the Link-LSA for OSPFv3 is correct?

  A. Contains both the link-local address of this interface and all IPv6 prefixes of the same area on this router
  B. Contains both the link-local address of the interface and all IPv6 prefixes on the interface
  C. Link-LSA carries the Prefix, PrefixOptions 0x00, and the IPv6 prefix information
  D. The Option field exists in the header of the LSA, not in the data area of the Link-LSA
  B. Contains both the link-local address of the interface and all IPv6 prefixes on the interface

  ---

• Question 666:

  Why is BGP an enhanced distance vector routing protocol?

  A. According to the routing rules of BGP routing, the route with lower MED is preferred
  B. BGP uses the ASPATH attribute to record all autonomous system numbers that a route passes through into an AS list, and based on that attribute, routes with shorter AS-PATH are preferred
  C. NEXT_HOP is a recognized mandatory attribute
  D. BGP cannot accept routes that carry a local AS number in the AS_PATH
  B. BGP uses the ASPATH attribute to record all autonomous system numbers that a route passes through into an AS list, and based on that attribute, routes with shorter AS-PATH are preferred

• Question 667:

  When you configure a virtualized campus network on iMaster NCE-Campus, Fit APs can immediately go online after you add them to iMaster NCE-Campus.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 668:

  Which of the following descriptions about VRRP timers is incorrect? (Choose three)

  A. MASTER DOWN = (3 * ADVER_INTERVAL) + Skew_time
  B. Skew_time = (255 - Priority) / 255
  C. By default, the time period for VRRP advertisement messages is 2 seconds
  D. By default, the VRRP preemption delay is 1 second
  B. Skew_time = (255 - Priority) / 255
  C. By default, the time period for VRRP advertisement messages is 2 seconds
  D. By default, the VRRP preemption delay is 1 second

• Question 669:

  Which of the following statements is incorrect about the user authentication points on the network?

  A. Deploying user authentication points at the access layer achieves granular permission management and high network security.
  B. Moving user authentication points from the access layer to the aggregation or core layer greatly reduces the number of user authentication points, thereby effectively mitigating the pressure on the AAA server.
  C. Deploying user authentication points at the access layer has both advantages and disadvantages when compared to doing so at the aggregation or core layer. Policy association can be applied if user authentication points are deployed at the access layer.
  D. When user authentication points are moved from the access layer to the aggregation layer, MAC address authentication for users may fail.
  D. When user authentication points are moved from the access layer to the aggregation layer, MAC address authentication for users may fail.

• Question 670:

  Which of the following description is correct regarding route control? (Choose three)

  A. IBGP routes can be introduced using the import-route BGP command
  B. AS-path-filter is for AS-path and affects the selection of routing paths
  C. OSPF, IS-IS, and BGP can issue default routes
  D. In Node 10, if-match community-filter 1 and if-match as-path-filter 1 have an AND relationship
  B. AS-path-filter is for AS-path and affects the selection of routing paths
  C. OSPF, IS-IS, and BGP can issue default routes
  D. In Node 10, if-match community-filter 1 and if-match as-path-filter 1 have an AND relationship