H12-221 : HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network) : Part 10

H12-221 : HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network) : Part 10

1. Which statements regarding the local preference attribute are true? (Select 2 answers)

   • Based on BGP route selection rules, the local preference has a lower priority than the preferred-value which means BGP compares local preference of routes after comparing preferred-values.
   • The local preference of a BGP route is 0 by default.
   • The local preference selects an exit point for data from the local AS
   • Based on BGP route selection rules, the local preference has a lower priority than the MED attribute which means that BGP compares local preference of routes after comparing MED.

2. The import-route limit” command is used to set a maximum number of imported routes that can be imported into an OSPF routing process.

   • TRUE
   • FALSE

3. Each router running OSPF has a router ID which is a 32-bit integer to uniquely identify a router. Therefore, the router IDs must be different even if the routers are in different ASs.

   • TRUE
   • FALSE

4. Which of the following elements together uniquely identify a LSA? (Select 3 answers)

   • LS type
   • Link state ID
   • Advertising Router
   • LS Sequence number

5. OSPF supports two authentication modes: area authentication and interface authentication. These two modes cannot be configured at the same time.

   • TRUE
   • FALSE

6. BGP speakers sends which type of message to identify its peer’s AS number information?

   • Route-refresh
   • Open 
   • Keepalive
   • Update

7. Which of the following messages exist only in PIM-SM? (Select 2 answers)

   • Join/Prune
   • Assert
   • Bootstrap
   • Register

8. An IP-prefix-filter is used for filtering IP prefixes and data packets.

   • TRUE
   • FALSE

9. What is the mask value for the network 175.25.128.0/19?

   • 255.255.0.0
   • 255.255.224.0
   • 255.255.24.0
   • Different based on the address type

10. BGP is an exterior gateway protocol which runs between ASs. It focuses on the control of route propagation and selection of optimal routes rather than discovery and calculation of routes.

    • TRUE
    • FALSE

11. Which of the following commands is used to display check information about the IGMP enabled interface?

    • [Quidway]show ip igmp interface
    • [Quidwayjdisplay igmp interface
    • [Quidway]show ip igmp
    • [Quidwayjdisplay ip interface

12. Why is BGP run by core routers in transit AS?

    • To eliminate route loops
    • To ensure the transmission of data packets to the external destination addresses 
    • To optimize network within an AS
    • To ensure only one export

13. Which of the following BGP filters can be used to set route attributes?

    • Ip-prefix
    • Route-policy 
    • As-path-filer
    • Community-filter

14. Assume that the subnet mask is 255.255.255.248. Which of the following are valid host addresses? (Select 3 answers)

    • 192.168.200.87
    • 196.123.142.190
    • 223.168.210.100
    • 220.100.100.154

15. All routing protocols can deliver default routes, supporting both forcible delivery and non-forcible delivery.

    • TRUE
    • FALSE

16. How many bits of the MAC address space is available for mapping IP multicast addresses?

    • 24
    • 22
    • 25
    • 23

17. You are using the address space 172.28.100.0/24. If the subnet mask 172.28.100.0/30 is used to subnet this address space to serve WAN links, how many total subnets can the address space be divided into?

    • 30
    • 64
    • 126
    • 254

18. In VRP, by default, a BGP router does not automatically send a refresh packet to its BGP peers for retransmitting an Update packet after the inbound routing policy of the BGP peers changes.

    • TRUE
    • FALSE

19. 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 routing of an ABR to a destination network segment.
    • Routing information can be exchanged between a backbone area and a non-backbone area but never between two non-backbone areas.

20. Which of the fallowings are OSPF packet types? (Select 3 answers)

    • LSA
    • LS Request
    • LSP
    • LS Update
    • LSAck