Huawei Huawei Certifications H12-224 Questions & Answers

• Question 321:

  Which of the statements describes the way BGP update routes?

  A. Broadcasts all of the routes periodically

  B. Update all of the routes using multicast address periodically

  C. Only update the changed routes and the new routes

  D. Update routes when BGP peer requests

  Correct Answer: C

• Question 322:

  Which of the following statements is false?

  A. Each OSPF router uses only one Router-LSA to describe the status of local links in an area.

  B. Link types described by a Router-LSA include P2P, P2MP, TransNet, and StubNet.

  C. A Network-Summary-LSA describes the metric of the route from an ABR to a destination network segment.

  D. Routing information can be exchanged between a backbone area and a non-backbone area but cannot be exchanged between two non-backbone areas.

  Correct Answer: B

• Question 323:

  The import-route limit command is used to set the maximum number of external routers that can be imported into an OSPF process.

  A. True

  B. False

  Correct Answer: A

• Question 324:

  Which of the following statements are correct regarding intra-area route calculation of OSPF? (Choose two.)

  A. Every OSPF router only uses one Router LSA to describe local active link state for one area.

  B. Every OSPF uses more than one Router LSA to describe local active link state for one area.

  C. One Router LSA only describes one link.

  D. One Router LSA describes more than one link.

  Correct Answer: AD

• Question 325:

  Which statements about BGP route selection rules are true? (Choose three.)

  A. BGP first ignores routes with unreachable next hops.

  B. A summarized route takes precedence over a non-summarized route.

  C. IBGP routes take precedence over EBGP routes.

  D. If other conditions of routes are the same, the route with the shortest Cluster_List is preferred.

  Correct Answer: ABD

• Question 326:

  Which statements about BGP well-known mandatory attributes are true? (Choose three.)

  A. Well-known mandatory attributes must be identified by all BGP routers.

  B. Well-known mandatory attributes must be transmitted between BGP peers.

  C. Well-known mandatory attributes are optional in an Update packet, and can be carried in an Update packet as needed.

  D. Well-known mandatory attributes must be carried in an Update packet.

  Correct Answer: ABD

• Question 327:

  Assume that a TCP connection works properly, and the peer AS number configured for a BGP router is different from the AS number of its BGP peer. During the establishment of a BGP session, the BGP router exchanges routing information with its peer, and finds that its peer AS number is different from the AS number of the peer. Therefore, the BGP router sends a Notification message to the peer, indicating that the establishment of a BGP session fails. Which message can be identified by the Error Code field in the Notification message?

  A. Route-refresh

  B. Open

  C. Keepalive

  D. Update

  Correct Answer: B

• Question 328:

  Which BGP attribute is usually used to determine the path along which data flows enter an AS?

  A. Router ID

  B. Nexthop

  C. Local-Preference

  D. MED

  Correct Answer: D

• Question 329:

  Which parameters are optional for configuring a BGP peer? (Choose two.)

  A. IP address

  B. Description

  C. Password

  D. AS-number

  Correct Answer: BC

• Question 330:

  Which of the followings is used to avoid route loops in BGP?

  A. Use ORIGIN attribute to record route origin

  B. Use AS_PATH attribute to record all ASs during a route passing from the local area to the destination in a certain order

  C. Use NEXT_HOP attribute to record next hop of the route

  D. Use MED attribute to influence export selection of other AS

  Correct Answer: B