H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 25

H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 25

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

   • True 
   • False

2. Which of the statements describes the way BGP update routes?

   • Broadcasts all of the routes periodically
   • Update all of the routes using multicast address periodically
   • Only update the changed routes and the new routes 
   • Update routes when BGP peer requests

3. Which of the following statements is false?

   • Each OSPF router uses only one Router-LSA to describe the status of local links in an area.
   • Link types described by a Router-LSA include P2P, P2MP, TransNet, and StubNet. 
   • A Network-Summary-LSA describes the metric of the route from an ABR to a destination network segment.
   • Routing information can be exchanged between a backbone area and a non-backbone area but cannot be exchanged between two non-backbone areas.

4. Which one of the statements describes the relationship between BGP and AS correctly?

   • BGP only runs between ASs, and cannot run within an AS.
   • BGP is an EGP running between ASs, and IGP runs within an AS such as OSPF,RIP and IS-IS. 
   • BGP builds up network topology by exchanging link-state information among Ass.
   • BGP cannot run between Ass.

5. Generally, the performance of an IP-prefix-filter is higher than that of an ACL.

   • True 
   • False

6. An IP-prefix-filter is used to filter IP prefixes and data packets.

   • True
   • False 

7. In BGP, which type of message is periodically exchanged between BGP peers to maintain a BGP peer relationship?

   • Open
   • Hello
   • Route-refresh
   • Keepalive

8. In the VRP, by default, the routes imported by BGP are not automatically summarized.

   • True 
   • False

9. Which type of BGP route will be added to the BGP routing table?

   • All BGP routes learned from peers 
   • Only the routes learned from IBGP peers
   • Only the routes learned from EBGP peers
   • Only optimal routes

10. An ACL is used to match routing information or data packet addresses so as to filter out the unmatched routing information or data packets.

    • True 
    • False

11. Which of the following BGP routing policies can be used to filter routes? (Choose two.)

    • Ip-prefix 
    • Reflect-client
    • Route-policy 
    • Next-hop-local

12. Which statements about the MED attribute are true? (Choose three.)

    • Based on BGP route selection rules, the MED attribute takes precedence over the AS_Path, Preferred-Value, Local-Preference, and Origin attributes. 
    • The MED attribute of a BGP route defaults to 100.
    • By default, BGP compares MED attributes of only the routes from the same AS. If the compare-different-as-med command is configured, BGP can compare the MED attributes of the routes from different ASs.
    • By default, if the MED value of a BGP route is not specified, the value 0 is used. If the bestroute med-none-as-maximum command is configured, the maximum MED value 4294967295 is used.

13. Once a BGP connection is established, a BGP Speaker advertises all the optimal routes in the BGP routing table to its BGP peer.

    • True 
    • False

14. Based on BGP route selection rules, a local route that is automatically summarized takes precedence over a local route that is manually summarized.

    • True
    • False 

15. Which method is used to establish session between the BGP peers?

    • Telnet
    • Send Hello packet
    • UDP
    • TCP 

16. Which of the following statements are correct regarding BGP attribute? (Choose two.)

    • Till now, there are 16 BGP attributes 
    • BGP attribute can be extended to 256 types
    • Well-known discretionary attribute may not be included in each BGP update message, such as Origin attribute
    • AS_PATH is an Optional Transitive attribute

17. In a route-policy, which BGP attributes can be invoked by if-match clauses? (Choose three.)

    • Local-Preference
    • AS_Path 
    • MED
    • Community

18. Based on BGP route selection rules, the route with the lowest Local-Preference is preferred.

    • True
    • False 

19. In a route-policy, which BGP attributes can be used to define apply clauses? (Choose three.)

    • Local-Preference 
    • Tag
    • Origin
    • AS-Path

20. What is the function of well-known community attribute NO_EXPORT_SUBCONFED in BGP?

    • Routes received carrying this value cannot be advertised outside the confederation
    • Routes received carrying this value cannot be advertised to any BGP peers
    • Routes received carrying this value cannot be advertised to any EBGP peers 
    • All above statements are wrong