Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 301:

  What is correct about multicast message forwarding?

  A. RPF check failure indicates that the multicast data packets are received from a suboptimal interface, but the interface still receives multicast traffic and forwards it downstream.
  B. IGMP snooping function cannot control the range of multicast traffic in the Ethernet flood.
  C. In the multicast transmission mode, the destination address of the message can specify the location of the receiver.
  D. The source address of the multicast message is the unicast address.
  D. The source address of the multicast message is the unicast address.

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• Question 302:

  Assume that BGP/MPLS IPv4 VPN, OSPF, LDP, and static routing protocols are already enabled on the PE router. Which of the following protocols need to enable GR on the PE in order to obtain NSF functionality? (Choose three)

  A. BGP
  B. Static route
  C. OSPF
  D. MPLS LDP
  A. BGP
  C. OSPF
  D. MPLS LDP

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• Question 303:

  When configuring the DHCP server on the router to provide DHCP services for the office, which of the following items need to be configured? (Choose two)

  A. Exclude unused IP addresses from the DHCP server
  B. Configure the timeout period for ping packets
  C. Configure the startup file for the DHCP server
  D. Configure manual binding
  E. Configure the DHCP address pool
  A. Exclude unused IP addresses from the DHCP server
  E. Configure the DHCP address pool

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  Explanation

• Question 304:

  Regarding the domain-authentication-mode md5 hello command in the ISIS process, which of the following explanations is correct?

  A. ISIS authentication cannot be applied in IPv6 environments.
  B. This command is mainly used to make the ISIS Hello message carry authentication information during the transmission process.
  C. All router domain authentication methods of the same routing domain are MD5, the password is hello, and IS-IS SNP and LSP will spread normally.
  D. Routing domain authentication is primarily used to allow Level-1 and Level-2 SNP and LSP messages to carry authentication information during delivery.
  C. All router domain authentication methods of the same routing domain are MD5, the password is hello, and IS-IS SNP and LSP will spread normally.

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  Explanation

• Question 305:

  Auto-negotiation mode is to obtain the maximum interface rate and operating mode. The network administrator configures all Ethernet interface rates of a working switch to 100 Mbps, and the operating mode is configured as Full-duplex. When a workstation with a network card configured for auto-negotiation is connected to the switch, the negotiation result is an interface rate of 100 Mbps and a working mode of Half-duplex. Which of the following explanations is the most reasonable for this phenomenon?

  A. The problem is on the workstation's NIC, mostly due to the aging of the NIC driver on the workstation, which causes the workstation NIC to learn the interface rate and operating mode configured on the switch
  B. Port rate negotiation is negotiated through the initial port sending FLP, and the operating mode is not negotiated through FLP
  C. STP initializes the port into the blocking state, causing auto-negotiation to fail, so the port should be configured as an edge port
  D. At higher port rates and operating modes, the workstation's network interface card cannot be configured as auto-negotiate
  E. Auto-negotiation is not configured on the switch, resulting in the switch not being able to send FLP messages to the workstation, causing the workstation to set its own operating mode to Half-duplex
  E. Auto-negotiation is not configured on the switch, resulting in the switch not being able to send FLP messages to the workstation, causing the workstation to set its own operating mode to Half-duplex

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  Explanation

• Question 306:

  Which of the following default route delivery methods does OSPF support? (Choose three)

  A. It can be issued without force
  B. Can be issued on ABR
  C. Issuance can only be enforced
  D. Can be issued on ASBR
  A. It can be issued without force
  B. Can be issued on ABR
  D. Can be issued on ASBR

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• Question 307:

  Which of the following descriptions of CBWFQ is correct?

  A. CBWFQ can be configured with MQC, and the service-policy is applied in the outbound direction
  B. CBWFQ can be used on both outbound and inbound interfaces
  C. CBWFQ provides delay, jitter, and bandwidth guarantees for traffic classification
  D. CBWFQ can only be configured in hierarchical policy-maps, where the parent policy-map performs policing and the child policy-map performs classification
  A. CBWFQ can be configured with MQC, and the service-policy is applied in the outbound direction

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• Question 308:

  In BGP4+, what is the content of the next hop network address field carried in the MP_REACH_NLRI attribute of an Update packet?

  A. It can be only a link-local address.
  B. It must be a link-local address.
  C. It must be a global unicast address.
  D. The link-local address and global unicast address can be carried at the same time.
  C. It must be a global unicast address.

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• Question 309:

  Which of the following is the type of northbound API used by iMaster NCE-WAN?

  A. NETCONF
  B. SNMP
  C. CLI
  D. RESTful
  D. RESTful

• Question 310:

  BGP Link State (BGP-LS) introduces a new NLRI into BGP. The NLRI carries link, node, topology prefix, and other information, and is also referred to as the link state NLRI.

  A. TRUE
  B. FALSE
  A. TRUE