Huawei Huawei Certifications H12-891 Questions & Answers

• Question 221:

  The following statement about isis a route leak of ISIS is correct?

  A. Route leaks for ISIS must be deployed on Level-1 routers

  B. Route disclosure for ISIS is turned on by default.

  C. Route disclosure for ISIS avoids suboptimal paths.

  D. Route leaks for ISIS can only be applied to IPv4 environments.

  Correct Answer: C

• Question 222:

  IsIS IPv6 cost 50 is configured under the interface, and the meaning of the command is ?

  A. The LEVEL-1 and Level-2 costs of the interface's IS-IS IPv6 are 50

  B. The LEVEL-1 and Leve1-2 costs of the INTERFACE's IS-IS IPv6 are both 60

  C. The LEVEL-2 cost of the interface's IS-IS IPv6 is 50

  D. The LEVEL-1 cost of the interface's IS-IS IPv6 is 50

  Correct Answer: A

• Question 223:

  Regarding IPv6 over IP4(19) road, the following statement is correct

  A. The 6to4 automatic tunnel requires the use of a specific IP6 address segment, and the assigned address segment is preceded by 3ffe::/16

  B. When configuring manual tunneling on the VRP platform, a Tunnel interface is generally created; When configuring automatic tunneling, a Vrua-Template interface is usually created

  C. The ISATAP tunnel determines the destination IPV4 address of the tunnel based on the destination IP6 address.

  D. All automatic tunnels encapsulate data in the same way.

  E. Automatic tunneling has great advantages over manual tunneling, and manual tunneling will be phased out

  Correct Answer: CD

• Question 224:

  During isis ' broadcast network database synchronization, is the following statement correct?

  

  A. R2, as DIS, sends CSNP periodically.

  B. R2 As DIS, Hello time is 3 times that of a normal router . C. R2 as DIS does not receive PSNP nouns for other routes.

  C. RI and R3 maintain database consistency by periodically sending PSNP requests.

  Correct Answer: A

• Question 225:

  If you have a LOCAL AREA NETWORK running 8021D Spanning Tree Protocol, the non- root switch does not receive which parameter under the root switch?

  A. MaxAge

  B. Root cost

  C. Forward delay

  D. Hold time

  E. Hello time

  Correct Answer: D

• Question 226:

  What is the relationship between CIR, BC, and TC?

  A. CIR=TC/BC

  B. CIR=BE/TC

  C. TC=CIR/BC

  D. TC=BC/CIR

  Correct Answer: D

• Question 227:

  The command ip as-path-fiter as-path-fiter-number (denylpermit) regular-expression to configure as-pathilter, in this command , multiple sentences can form an as-path-filter statement, what is the relationship between so many statements?

  A. Routes match in order When a route matches to a clause, the relationship between

  B. and is no longer matched downwards

  C. or relationships

  D. Routes match in order and routes need to match all sub-directions

  Correct Answer: A

• Question 228:

  In PIM-SM, the description of RP is incorrectly ?

  A. All members of the group and the multicast sources that send multicast data to the group converge to the unique RP

  B. The initial multicast streams for all groups in the shared tree are forwarded to the receiver via RP

  C. An RP can serve multiple multicast groups at the same time, a multicast group can correspond to multiple RPs

  D. RPs can be responsible for the forwarding of several or all multicast groups, and there can be an RP in

  the network

  Correct Answer: C

• Question 229:

  If we have a VPN instance configured on a router, if we need to view the VPN route on a Huawei router, which of the following commands should we use?

  A. display ip routing-table vpn-instance vpn-instance-name

  B. display ip routing-table

  C. display vpn routing-table

  D. display ip vpn-instance

  Correct Answer: A

• Question 230:

  As shown in the figure, PC1 and PC2 are hosts that belong to the same network segment, below about between PC1 and PC2 What are the correct descriptions of IPv6 neighbor states?

  

  A. If the MAC address information of PC2 can be queried on PC1, the neighbor relationship may be Stale

  B. If pc2's MAC address information can be queried on PC1, the neighbor relationship may be Probe

  C. There are five possible neighbor states between PC1 and PC2: Incomplete, Reachable, and Stale , Delay, Probe

  D. If the MAC address information of PC2 can be queried on PC1, the neighbor relationship must be Reachable

  Correct Answer: AC