Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 131:

  Which of the following statements about the NSSA (Not-So-Stubby Area) in OSPF is correct?

  A. In the NSSA area, when OSPF neighbors send hello packets, the N-bit is in position 0 and the E-bit is in position 1 within the option field.
  B. The NSSA area must automatically generate a default LSA to access external networks.
  C. The NSSA area generates a Type 7 LSA to advertise external routes, and the Forwarding Address (FA) in the Type 7 LSA acts to prevent loops.
  D. In the NSSA area, when OSPF neighbors send hello packets, the E-bit is in position 1 within the option field
  D. In the NSSA area, when OSPF neighbors send hello packets, the E-bit is in position 1 within the option field

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• Question 132:

  Which of the following statements about the Register message in PIM-SM are correct? (Choose three)

  A. The Register message enables the RP to learn the multicast source information
  B. The Register message is sent by the receiver router
  C. Register messages are sent to the RP via unicast instead of multicast
  D. The Register message is sent by the source DR
  A. The Register message enables the RP to learn the multicast source information
  C. Register messages are sent to the RP via unicast instead of multicast
  D. The Register message is sent by the source DR

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  Explanation

• Question 133:

  Which of the following statements about RADIUS is correct?

  A. MAC authentication does not require a username and password, so you cannot use RADIUS to authenticate the user.
  B. RADIUS supports both wired and wireless access modes.
  C. Separation of RADIUS protocol authentication, authorization, and audit.
  D. RADIUS authentication and portal authentication cannot be used together because the portal server can typically be used to authenticate users when portal authentication is deployed.
  B. RADIUS supports both wired and wireless access modes.

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  Explanation

• Question 134:

  In an MPLS VPN network, two-layer MPLS labels are added into data packets before they are transmitted over the public network. Which of the following statements regarding data packet processing are correct? (Choose three)

  A. The egress PE sends the data packet to the correct VPN based on the inner label.
  B. The penultimate hop removes the outer label before forwarding the data packet to a peer egress PE.
  C. The IP data packet received by egress LSR is without labels.
  D. The penultimate-hop device receives a packet with an outer label.
  A. The egress PE sends the data packet to the correct VPN based on the inner label.
  B. The penultimate hop removes the outer label before forwarding the data packet to a peer egress PE.
  D. The penultimate-hop device receives a packet with an outer label.

• Question 135:

  The existing router HW1 running BGP is configured with both IBGP neighbors and EBGP neighbors. Which of the following description about IBGP neighbors and EBGP neighbors is correct? (Choose three)

  A. The router will have an EBGP neighbor that must be directly connected; otherwise, IBGP-Multihop must be configured
  B. The router sends BGP updates learned from its EBGP neighbors to its other IBGP neighbors and EBGP neighbors
  C. IBGP neighbors can establish neighbor relationships through the Loopback interface
  D. The router sends BGP updates learned from its IBGP neighbors to its other IBGP neighbors and EBGP neighbors
  E. EBGP neighbors must be directly connected; otherwise, EBGP-Multi-hop must be configured
  B. The router sends BGP updates learned from its EBGP neighbors to its other IBGP neighbors and EBGP neighbors
  C. IBGP neighbors can establish neighbor relationships through the Loopback interface
  E. EBGP neighbors must be directly connected; otherwise, EBGP-Multi-hop must be configured

• Question 136:

  NETCONF provides a set of mechanisms for managing network devices. What layers can NETCONF be conceptually partitioned into?

  A. Encrypted transport layer, messages layer, operations layer, and content layer
  B. Encrypted transport layer, messages layer, configuration layer, and content layer
  C. Secure transport layer, messages layer, configuration layer, and content layer
  D. Secure transport layer, messages layer, operations layer, and content layer
  D. Secure transport layer, messages layer, operations layer, and content layer

• Question 137:

  Which of the following descriptions about link-state routing protocols is most plausible?

  A. High CPU utilization and loops are easy to generate.
  B. Slow convergence and low CPU utilization.
  C. Fast convergence and low CPU utilization.
  D. Fast convergence and high CPU utilization.
  D. Fast convergence and high CPU utilization.

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  Explanation

• Question 138:

  As shown in the figure, OSPF is deployed on a campus network to achieve network interconnection, and Area 1 is configured as an NSSA. To allow R1 to reach R4's loopback interface address, an engineer imports a direct route into R4's OSPF process:

  [R4-ospf-1] import-route direct Loopback0: 10.1.4.4/32

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

  A. R2 is an ABR and translates Type 7 LSAs carrying the default route information into Type 5 LSAs.
  B. R2 is an ABR and translates Type 7 LSAs that describe external routes into Type 5 LSAs.
  C. R4 is an ASBR in the NSSA and generates Type 7 LSAs carrying the default route information.
  D. R4 is an ASBR in the NSSA and generates Type 7 LSAs to describe external routes.
  B. R2 is an ABR and translates Type 7 LSAs that describe external routes into Type 5 LSAs.
  D. R4 is an ASBR in the NSSA and generates Type 7 LSAs to describe external routes.

• Question 139:

  Based on the following IS-IS peer output, what can be determined?

  Peer information for ISIS(1): Peer System ID: ee8c.a0c2.baf3 Interface: GE0/0/0 State: Up HoldTime: 7s Type: L1 PRI: 64 MT IDs supported: 0(UP), 2(UP) Local MT IDs: 0, 2 Area Address(es): 49.0022 Peer IP Address(es): 10.1.34.1 Peer IPv6 Address(es): FE80::2E0:FCFF:FE98:2576

  A. Both IPv4 and IPv6 IS-IS neighbor relationships are established between R4 and ee8c.a0c2.baf3.
  B. R4 does not have any IS-IS neighbors.
  C. Only an IPv4 IS-IS neighbor relationship is established between R4 and ee8c.a0c2.baf3.
  D. Only an IPv6 IS-IS neighbor relationship is established between R4 and ee8c.a0c2.baf3.
  A. Both IPv4 and IPv6 IS-IS neighbor relationships are established between R4 and ee8c.a0c2.baf3.

• Question 140:

  During the evolution from OSPFv2 to OSPFv3, LSA formats and functions remain unchanged, except that the network layer addresses in LSAs are changed from IPv4 to IPv6.

  A. TRUE
  B. FALSE
  B. FALSE