Huawei Huawei Certifications H12-891 Questions & Answers

• Question 451:

  Mainstream Layer 2 tunneling technologies include VXLAN TRILL, NVGB and MPLS.

  A. FALSE

  B. TRUE

  Correct Answer: A

• Question 452:

  Router HW1 and Router HW2 connect Network A and Network B, respectively. As shown in the figure

  below, if you want to set up an IPsec VPN between router HWI and router HW.

  (single selection).

  

  A. rule permit ip source 1921681.10 destination 1921681.20

  B. rule permit ip source 101.1.0000255 destination 1921681.20

  C. rule permit ip source 101.1.0000255 destination 101.20000255

  D. rule permit ip source 1921681.10 destination 101. 20000255

  E. rule permit ip source 101.20 000255 destination 101.1.0000255

  Correct Answer: C

• Question 453:

  Huawei's SDN controller using VXLAN technology is fixed?

  A. Agile Controller-Campus

  B. Agile Controller-WAN

  C. Agile Controller-DCN

  Correct Answer: C

• Question 454:

  As shown in the figure, all routers run OSPF, which is correct in the following statement:

  

  A. Both R2 and Zone 0 generate Router LSA

  B. R2 generates Router LSA only in Zone 0

  C. R2 forwards the R1-generated Router LSA to R3

  D. R2 Forwards the R3-generated Router LSA to R1

  Correct Answer: A

• Question 455:

  As shown in the figure,

  

  RI, R2 establishes an EBGP neighbor and turns on the BFD detection function, the following statement is correct

  A. Detection time for BFD packets for AR2 800ms

  B. R1 Detection time for BFD packets for 1280ms

  C. R1 Detection time for BFD packets The detection time for BFD packets for 660ms

  D. R2 is 600ms

  Correct Answer: C

• Question 456:

  Which of the following attacks are DoS (Denial of servioe) attacks?( Multiple choice question)

  A. Single packet attack

  B. Source P address spoofing attack

  C. Man-in-the-middle attack

  D. Flood Attack

  Correct Answer: AD

• Question 457:

  SNMPv3 defines which security features

  A. Privacy

  B. Authentication

  C. Domain checking

  D. Accounting

  Correct Answer: AB

• Question 458:

  Which of the following statement about isis protocol route aggregation is correct?

  A. Route aggregation can be configured and takes effect on all types of routers

  B. Route aggregation can only take effect if configured on Leve-1 port routers

  C. Route aggregation can only be configured on Leve-2 routers to take effect

  D. Route aggregation can only be configured on Leve-1-2 routers to take effect with

  Correct Answer: A

• Question 459:

  The following description of the process of sending and receiving data frames in switch interface Access mode is correct? ( Single choice questions).

  A. In Access mode, labeled data frames are discarded directly when they are received.

  B. Access mode strips off the VLAN tag of the dataton when sending .

  C. Access mode receives only unlabeled data frames.

  D. When a data frame enters the switch interface, the switch learns the destination MAC address in the data frame.

  Correct Answer: B

• Question 460:

  If you run PIM-SM in a multicast network, you need to build a multicast forwarding tree between the multicast source and the receiver to enable the receiver to receive the multicast effect, so what are the following options for the correct tree sketch for the build?

  A. What is built between the multicast source and the RP is the SPT tree

  B. RP and the receiver is built between the RPT tree

  C. Built between the RPT tree

  D. RP and the swap is the SPT tree

  Correct Answer: AB