Huawei Huawei Certifications H12-891 Questions & Answers

• Question 421:

  If the OSPF protocol is running in the network, after configuring the non-osseous thousand region in the OSPF region as the Totally Stub region, the ABR router sends a message to Totally The Stub area issues an LSA with an LSID of 0000, which category the LSA belongs to LSA?( Single choice questions).

  A. LSA3

  B. LSA1

  C. LSA5

  D. LSA2

  Correct Answer: A

• Question 422:

  You try to trace a remote Internet address on your PC, but the traceroute stops after it reaches a router, and currently, the router should be in the incoming direction of the serial interface

  With an ACL "rule5 permit tcp source any destination any", you need to add which of the following ACLs to the router for traceoute to work

  A. Rule 10 permit icmp source any destination any icmp-typettl-exceeded rule 15 permit source any destination any icmp-type echo-reply

  B. Rule 10 permit icmp source any destination any icmp-type echo rule 15 permiticmp source any destination any icmp-type net-unreachable

  C. Rule 10 permit tcp source any destination any

  D. Rule 10 permit icmp source any destination any icmp tti-exceeded rule permit icmp source any icmptype port-unreachableE. Rule 10 permit udp source any destination any rule 15 permit icmp source any destination any icmp-type protocolunreachable

  Correct Answer: D

• Question 423:

  When troubleshooting a local area network, you notice a large number of frame alignment errors, FCS errors and LAG conflicts, and the possible cause of these problems is ?

  A. Switches and terminals are interconnected over 10/100/1000base-T Ethernet links, and switches and terminals operate in half-duplex mode

  B. There is a mode mismatch on the 1000base-LX/LH link

  C. The operating mode does not match

  D. on a 10/1000/1000base-T Ether link This type of error occurs in most environments

  Correct Answer: C

• Question 424:

  You want to set the DSCP value of VolP traffic in HW network devices to EF. According to the differentiated service model RFC, traffic token EF should be set to:

  A. DSCP is set to decimal 36

  B. IP ToS is set to OXEF

  C. IP Experimental ECN

  D. DSCP is set to decimal 5

  E. Bitstream 101110

  Correct Answer: E

• Question 425:

  In an MPLS IBGP VPN environment, if tags are distributed only through BGP, LDP, the MPLS tags for a message can be up to two layers of tags.

  A. True

  B. False

  Correct Answer: A

• Question 426:

  Which of the following tools cannot be referenced directly by the If-match clause in Route- policy?

  A. Regular expression

  B. IP-prefix

  C. AS-path-filter

  D. Community-filt

  Correct Answer: A

• Question 427:

  Regarding route Policy, the following description is correct as ?( Multiple selection) Multiple selection

  A. Advanced ACLs can be applied in route-policy to filter routes

  B. The table entry exceed::0 less-equal 128 indicates that all IPv6 routes are allowed through

  C. If more than one node is defined in Route-policy, at least one node in each node should have a matching pattern of permit

  D. Route-Policy can filter only the default route

  Correct Answer: BCD

• Question 428:

  As shown in the figure, there are two IP6 networks that can access the IPv4 network, and the IPsec tunnel needs to be established between the two IPv6 networks to communicate, which of the following

  requirements?(). Single choice questions).

  

  A. ESP + tunnel mode

  B. AH + transmission mode

  C. AH + tunnel mode

  D. None of the above options are correct

  Correct Answer: A

• Question 429:

  s the following description of THE MUX VLA N in huawei switches correct?

  A. MUX VLAN ??Principal VI-AN ?Subordinate VI-AN ???Separate VLAN ? Isolate VLAN

  B. Each Separate VLAN can bind multiple Principal VLANs

  C. Under the same VLAN, muX VLANs can be mixed with SuperVLANs

  D. The Principal port can pass the answer to all ends within the MUX VLAN

  Correct Answer: D

• Question 430:

  The following is the correct description of the aggregation of BGP? (Single Choice Questions).

  A. After you configure aggregate ipv4-address mask , only aggregate routes are published, not detail routes.

  B. For IPv6 routing, BGP supports manual coalescing 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

  Correct Answer: D