H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 30

H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 30

1. Which of the following situations will occur after multicast load balance is configured? (Choose three.)

   • If there are no equal-cost unicast routes, multicast load balance will fail to function.
   • If group address-based load splitting is used, balanced entry distribution over equal-cost routes cannot be ensured because of hash algorithm limitations.
   • Balanced entry distribution over equal-cost routes can be ensured as long as multicast load balance is configured.
   • In multicast load splitting, traffic may not be balanced among equal-cost routes. This is because multicast load balance is based on multicast entries but not based on multicast data packets. 

2. ACL rules are matched based on the configured order only.

   • TRUE
   • FALSE 

3. Before establishing a network, we must create VLANs. The users that do not need to communicate with each other should be added to the same VLAN for isolation.

   • True
   • False

4. A 32-bit MPLS header consists of a 20-bit label used for packet forwarding, a 3-bit EXP field that identifies the IP packet priority, a 1-bit bottom-of-stack flag that identifies the last label, and an 8- bit ITL field. Which statement about the ITL field is true?

   • It is used to prevent packet forwarding loops, similar to the TTL field in an IP header.
   • It is used for label management.
   • It specifies the upstream device in label distribution
   • It controls the LSR.

5. Which of the following are migration difficulties? (Choose all that apply.)

   • Minimizing on services
   • Achieving optimal risk prevention
   • Formulating a complete migration solution
   • Carrying out the migration smoothly

6. Which of the following statements regarding RPs are true? (Choose three.)

   • Different group addresses on a PIM-SM network corresponds to different RPs. 
   • An RP is the root of an RPT.
   • An RP is elected out of BSRs.
   • All routers on a PIM-SM network must automatically discover the location of RPs. 

7. 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

8. RTA is a source’s DR and RTB is an RP. A multicast source sends multicast data to RTA but RTB cannot find any information about the multicast source (registered by using the PIM Register message). Why? (Choose three.)

   • RTB has no unicast routes to RTA.
   • RTA fails to learn RP information.
   • RTA has no unicast routes to RTB.
   • The RP learned by RTA is not RTB.

9. Which of the following describes the relationship between BGP and AS?

   • BGP only runs between ASs, and cannot run within an AS.
   • BGP is an EGP used by ASs to exchange routing information with other ASs. 
   • BGP builds network topologies by exchanging link-state information between ASs.
   • BGP cannot run between ASs.

10. To which attribute type does the BGP AS-Path attribute belong?

    • Well -known Mandatory 
    • Well-known Discretionary
    • Optional Transitive
    • Optional Non-transitive

11. VLANs isolate broadcast domains, eliminates broadcast storms, and enhances information security.

    • True
    • False

12. In PIM-DM, which of the following messages needs to be sent by a downstream interface when the downstream interface recovers to the forwarding state from the prune state?

    • Join
    • Assert
    • Prune
    • Graft 

13. Which of the following routers can initiate SPT switchover on a PIM-SM network? (Choose two.)

    • Last-hop router 
    • Intermediate router
    • RP 
    • Source’s DR

14. How many default zones does the USG supporting multi-instance have?

    • Two
    • Three
    • Four
    • Five 

15. An IP address 192.168.13.175 with the subnet mask 255.255.255.2 can be assigned to a device.

    • TRUE
    • FALSE 

16. The acl[ number ] acl-number [ match-order { auto | config ] command is used to configure an ACL. In this command, acl-number specifies the number of an ACL. For an advanced ACL, what is the range of its acl-number?

    • 1000 to 3999
    • 2000 to 2999
    • 3000 to 3999 
    • 0 to 1000

17. If a BGP peer is configured with “multiple” route selection tools for route filtering, which of the following statements are true? (Choose two.)

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

18. Which of the following protocols are multicast routing protocol? (Choose three.)

    • DVMRP
    • PIM-DM
    • OSPF
    • PIM-SM 

19. Which of the following routing protocols support import-route? (Choose three.)

    • OSPF
    • RIP
    • BGP
    • Static

20. 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