H12-221 : HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network) : Part 03

H12-221 : HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network) : Part 03

1. Which of the following statements are correct regarding OSPF Network LSAs? (Select 2 answers)

   • Network LSAs are generated by ABR.
   • Only the router which is connected to NBMA or Broadcast Network may generate Network LSAs.
   • DR uses Network LSAs to describe routers that have established adjacency with it in the network,
   • Network LSAs are flooded in the entire AS.

2. If the value of hold timers in the Open messages sent by Peer A and Peer B are 180s and 90s respectively, then what is the interval at which the Keepalive messages are sent after a BGP connection is established between these two peers?

   • 180s
   • 90s
   • 60s
   • 30s

3. Which of these addresses are reserved for use by multicast applications?

   • Class A
   • Class B
   • Class E
   • Class D

4. Which of the statements describes how BGP updates routes?

   • Broadcasts all routes periodically
   • Update all routes periodically using multicast addresses
   • Updates only changed and new routes 
   • Updates routes on BGP peer requests

5. How many multicast IP addresses can be represented by an IP multicast MAC address?

   • 1
   • 23
   • 32
   • 24

6. Which statement about OSPF is false?

   • Hello messages are used as a form of greeting to discover other routers on its networks and establish relationships between neighboring devices. On broadcast or NBMA networks, Hello messages can also be used to elect a DR or a BDR.
   • DD packets describe the summary LSDB information by carrying LSA headers.
   • The intervals at which two routers send Hello messages must be consistent; otherwise, cannot be established relationships between neighboring devices.
   • DD packets contain headers of all LSAs for periodic LSDB synchronization between OSPF neighbors.

7. On a broadcast network or an NBMA network, not all neighbors need to set up adjacencies with each other. Therefore, the concept of establishing adjacency is applicable only to the broadcast network or the NBMA network.

   • TRUE
   • FALSE

8. Which of the following route selection tools is used in multiple routing protocols, can be configured with match conditions, and consists of if-match and apply clauses?

   • AS-path-filter
   • IP-prefix
   • Route-policy
   • Community-filter

9. Which statements regarding the range of AS number are true? (Select 3 answers)

   • If 2-byte AS values are supported, the private AS number ranges from 32768 to 65535.
   • If 2-byte AS values are supported, the private AS number ranges from 64512 to 65535.
   • If 2-byte AS values are supported, the AS number ranges from 1 to 65535.
   • If 4-byte AS values are supported, then the 4-byte AS number is in the x.y format. Here, “x” and “y” are integers ranging from 1 to 65535 and 0 to 65535 respectively.

10. Which of the following statements are correct regarding BGP attributes? (Select 2 answers)

    • 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

11. What is the network address for the IP address 190.233.27.13/16?

    • 190.0.0.0
    • 190.233.0.0
    • 190.233.27.0
    • 190.233.27.1

12. What is the link-state ID of an ASBR-Summary-LSA?

    • The OSPF Router ID of an LSA’s originator
    • The Interface IP address of the DR on the described network segment
    • The address of the described network segment
    • The Router ID of the described ASBR

13. Which of the following statements are true if a BGP peer is configured with “multiple” route selection tools for route filtering? (Select 2 answers)

    • The routes received from the BGP peer are first matched with IP-prefix and then with route-policy.
    • The routes received from the BGP peer are first matched with route-policy and then with IP-prefix.
    • The routes sent to the BGP peer are first matched with IP-prefix and then with route-policy.
    • The routes sent to the BGP peer are first matched with route-policy and then with IP-prefix.

14. Which types of packets are supported by BGP? (Select 3 answers)

    • Hello
    • Notification
    • Update
    • Route-refresh

15. Which of these statements is false when using the import-route command to import routes into BGP?

    • The import-route command can import IGP routes, direct routes, and static routes into BGP.
    • A process ID must be specified if OSPF routes or RIP routes are imported into BGP.
    • By default, the origin attribute of imported routes is IGP. 
    • Routing policies filters the routes imported from other routing protocols.

16. The NBMA mode doesn’t function if all the routers in the network are not fully connected.

    • TRUE
    • FALSE

17. In VRP, by default, a BGP router automatically retransmits an update packet to its peers after the outbound routing policy for the BGP peers changes.

    • TRUE
    • FALSE

18. Which of the following messages needs to be sent out by a downstream interface when recovering from the pruned state to the forwarding state in PIM DM?

    • Join
    • Assert
    • Prune
    • Graft

19. How many Class C networks does the summarized route 192.168.134.0/22 cover?

    • 2
    • 4
    • 8
    • 16

20. Which of the following statements is false?

    • The Type-1 external metric is the sum of the external metric and the internal cost to reach an ASBR.
    • The Type-2 external metric uses 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 effects of 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.