H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 22

H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 22

1. BGP is an inter-AS routing protocol. Which statements about BGP are true? (Choose three.)

   • BGP adopts a reliable transmission protocol.
   • BGP supports automatic peer discovery.
   • BGP supports incremental route update.
   • BGP supports various routing policies.

2. Which statement is true if MD5 authentication is configured during the configuration of a BGP peer?

   • All the routers in the same AS must use the same MD5 password.
   • A pair of BGP peers must use the same MD5 password. 
   • All BGP peers of a router must use the same MD5 password.
   • Every BGP peer of a router must use a unique MD5 password.

3. In OSPF protocol, which of the following elements are used to describe one link? (Choose three.)

   • Link ID
   • Data
   • Network Mask
   • Metric

4. A failure in establishing a BGP peer relationship can be addressed by checking the TCP connectivity and BGP peer configurations.

   • True 
   • False

5. In which state have BGP peers not established any connection and not initiated a connection request?

   • Established
   • OpenSent
   • Active
   • Idle 

6. OSPF uses SPF algorithm to calculate SPF tree according to topology. What is the node of the SPF tree?

   • Router
   • Router and network segment 
   • Port and network segment
   • Router and port

7. Which of the following conditions must be met for importing routes to BGP by using the network command? (Choose two.)

   • The routes are optimal in the IP routing table.
   • The routes do not need to match the specified mask length.
   • The routes match the specified mask length. 
   • The routes are IGP routes.

8. Type 2-external routes always take precedence over Type 1-external routes.

   • True
   • False 

9. What kind of the BGP attributes does AS-Path attribute belong to? (Choose two.)

   • Mandatory
   • Transitive
   • Optional
   • Non-transitive

10. Which of the following statements belong to BGP COMMUNITY attribute? (Choose three.)

    • NO_EXPORT
    • NO_ADVIERTISE
    • LOCAL_EXPORT_SUBCONFED
    • NO_BROADCAST

11. The router ID configured in the system view takes precedence over the router ID configured in the BGP view.

    • True
    • False

12. In the BGP routing table, if there are two BGP routes with the same destination address but different next hops, which statement about the two BGP routes is true?

    • Both BGP routes are advertised to other BGP peers.
    • Only the optimal route selected from the two BGP routes is advertised to other BGP peers. 

13. Which of the following statements is false?

    • The metric of a Type-1 external route is the sum of the AS internal metric (metric to reach an ASBR) and the AS external metric (metric from the ASBR to the destination network).
    • The metric of a Type-2 external route is only the AS external metric.
    • The metric of an external route is the sum of the AS external metric and the AS internal metric. 
    • The prerequisite for setting Forwarding Address to a non-zero value is that the next hop of the external route imported into OSPF is within the OSPF routing area.

14. If the hold timers in the Open messages sent from BGP Peer A and Peer B are 180s and 90s respectively, what is the interval at which Keepalive messages are sent after Peer A and Peer B have established a BGP peer relationship?

    • 180s
    • 90s
    • 60s
    • 30s 

15. Which TCP port is used by BGP?

    • 520
    • 89
    • 179 
    • 180

16. Assume that the following commands are run to configure BGP:

    

    Which statements about the configurations are true? (Choose two.)

    • The global configuration is preferred. Therefore, the timer values for peer 1.1.1.2 are “keepalive 30 hold 90.”
    • The peer configuration is preferred. Therefore, the timer values for peer 1.1.1.2 are “keepalive 10 hold 30.” 
    • The smaller one between the global and peer timer values is used. Therefore, the timer values of peer 1.1.1.2 is “keepalive 10 hold 30”.
    • The default configuration is “timer keepalive 60 hold 180.” Therefore, peer 1.1.1.2 can detect connection faults faster than the default configuration. 

17. What is private AS number?

    • 65410-65535
    • 1-64511
    • 64512-65535 
    • 64511-65535

18. Which statement about BGP is false?

    • BGP runs over TCP.
    • BGP is an enhanced distance-vector routing protocol.
    • BGP uses port number 189. 
    • BGP is an inter-AS routing protocol.

19. In OSPF protocol, which of the following statements are incorrect regarding Link ID of Router LSA? (Choose two.)

    • In Point-to-Point link type, Link ID is the neighbor’s Interface IP address.
    • InTransNet link type, Link ID is the network address of TransNet network segment.
    • InStubNet link type, Link ID is the network address of Stub network.
    • In Virtual link type, Link ID is the neighbor’s Router ID of virtual link.

20. The Origin attribute of the BGP route that is imported by using the network command is IGP.

    • True 
    • False