Huawei Huawei Certifications H12-891 Questions & Answers

• Question 311:

  Network managers can use CAR technology in traffic policing. What of the following technologies can be applied in CAR?

  A. Double barrel two-speed

  B. Double barrel single speed

  C. Single barrel single speed

  D. Three barrels of single quick

  Correct Answer: AB

• Question 312:

  In Huawei switches, the hybird port can select vlan1 as an untagged vlan

  A. True

  B. False

  Correct Answer: A

• Question 313:

  The RSTP protocol provides a variety of protection functions, such as when the edge port is configured as a protection state, the edge port receives the BPDU packet processing method;

  A. Directly discard the BPDU packet

  B. Close the port

  C. After parsing the BPDU message, the relevant information is obtained

  D. Forward BPDU packets as required

  Correct Answer: B

• Question 314:

  Is the following information about BGP4+ described correctly?

  A. BGP4 can use dampening commands to suppress oscillations on IBGP routes.

  B. Modifying the RouterID of BGP causes the BGP connection between routers to be re- established.

  C. The Next Hop attribute in BGP4+ is represented by an IPv6 address, which can be the link-local address of the next hop.

  D. BGP4+ does not support route auto-aggregate

  Correct Answer: AB

• Question 315:

  Is the following statement about the multicast address used by 0SPFv3 correct?

  A. RD routers use FF02: :6

  B. The DR router uses FF08::6

  C. All OSPF routers use FF02::5

  Correct Answer: AC

• Question 316:

  As shown in the figure, the overload bit of ISIS is set in the configuration of router R3, and the following statement is correct

  

  A R3's direct route will be ignored by R1 and R2 because of the setting of the overload bit .

  A. R3's direct route will be ignored by R1 and R2 because of the setting of the overload bit .

  B. When the router runs out of memory, the system automatically sets the overload flag bit in the sent LSP packets. Irrelevant to whether the user has a set-overload command configured.

  C. R3 through import-route will not be published. The LSP of

  D. R3 will not be able to spread to R1 and R2

  E. R3 initiates the load state, and R1 and RZ will not calculate the LSP of R3 cattle in the SP tree.

  Correct Answer: BC

• Question 317:

  What are the following advanced features supported by BGP EVPN?

  A. ARP broadcast suppression

  B. VRRP overVXLAN

  C. Multi-active gateway

  D. WI-AN Qos

  Correct Answer: ABCD

• Question 318:

  When configuring AS-Path-Filter, ip as-path-filter 10 permit_100$ indicates a matching route received from the A5100 but not from the AS100

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 319:

  There is a concept of FEC-Forwarding Equivalence Class in MPLS, so what criteria can FEC not allocate based on?

  A. Application Protocol

  B. Class of Service

  C. Destination Address

  D. Fragment offset

  Correct Answer: D

• Question 320:

  Regarding the description of VRRP Fast Switching, the error is ?

  A. Use VRRP to monitor BFD sessions or EFM features, either in BPD sessions or EFM session states After the change, the VRRP module is notified to achieve fast VRRP switching

  B. A VRRP backup group cannot monitor Peer BFD, Link BFD, and Normal BFD

  C. at the same time If you configure to monitor multiple BFDs at the same time Then the various configurations are interrelated and may have an impact

  D. When a VRRP backup group monitors normal BFD, when the BFD state changes, the active-standby state is changed by modifying the backup group priority

  Correct Answer: BC