H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 39

H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 39

1. Which of the following statements regarding network maintenance work are true? (Choose two.)

   • For device software maintenance, onsite operations are allowed but only remote operations are recommended.
   • The device software running is closely related to services running on the device.
   • The external environment where hardware runs does not need special attention.
   • For device environment maintenance, maintenance personnel need to go to the site or even use some professional tools for observation and measurement.

2. Congestion management uses queue scheduling to manage and control traffic when traffic congestion occurs.

   • True
   • False

3. During the structured network troubleshooting process, in which of the following phases is the fault reported or advertised to other departments? (Choose two.)

   • Fault identification
   • Information collection
   • Cause list
   • Troubleshooting assessment

4. Which of the following are possible causes for an MSTP failure in a LAN? (Choose three.)

   • MSTP is configured incorrectly.
   • A physical link alternates between Up and Down, triggering the device to send a large number of TC packets.
   • The MSTP-enabled device receives MSTP TC packets that are transparently sent or from the client.
   • The priority of the port in the specified MSTI is not configured.

5. Which of the following causes for VRRP group flapping is the most impossible?

   • The link where VRRP Advertisement packets are transmitted changes from Up to Down frequently.
   • The interval for sending VRRP Advertisement packets is small.
   • Association between VRRP and BFD is configured to implement a rapid master/backup switchover.
   • VRRP packets are discarded randomly because congestion occurs.

6. Which of the following statements regarding Huawei network optimization service (NOS) is true? (Choose all that apply.)

   • Improves network availability and performance
   • Improves the productivity.
   • Reduces costs.
   • Implements knowledge transfer.

7. Which three steps does a migration include? (Choose three.)

   • Snapshot before the migration
   • Delivery during the migration
   • Check after the migration
   • Attendance after the migration

8. Which of the following contents are included in a migration project solution? (Choose all that apply.)

   • Migration preparation
   • Migration implementation
   • Rollback solution
   • Contingency plan

9. OSPF runs on TCP protocol and uses TCP port number 179.

   • True
   • False

10. The difference between an OSPF NSSA area and a stub area is that external routes can be imported into a NSSA area.

    • True
    • False

11. An AS boundary router can be an internal router or ABR and must belong to the backbone area.

    • True
    • False

12. When QoS is deployed on a network to improve the quality of some services, the quality of other services must deteriorate.

    • True
    • False

13. Fast detection technology can rapidly detect communication faults between neighboring devices as soon as possible so that the system can take measures immediately to ensure that services are not interrupted.

    • True
    • False

14. In Round Robin mode, the device sends packets based on the number of defined bytes of each queue. The bandwidth ratio of each queue is the ratio of the number of defined bytes of the local queue to the total number of defined bytes of all queues.

    • True
    • False

15. To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows advertising routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.

    • True
    • False

16. If Router Priority is set to 0 for a router, it is allowed to elect this router as a DR or BDR in an OSPF routing domain, but its priority is the lowest.

    • True
    • False

17. Which of the following statements regarding the firewall zone security level is false?

    • The default security level of the new zone is 1. 
    • Only the security level of the user-defined zone can be configured.
    • The configured security level cannot be changed.
    • Two zones cannot be configured with the same security level.

18. Which type of PIM-DM protocol packet does a router send to the downstream router after it receives a Graft message from the downstream interface?

    • Join
    • Assert
    • Graft
    • Graft-ACK 

19. Which of the following statements regarding the failure to establish a BGP peer relationship is false?

    • TCP port 179 may be prohibited.
    • BGP peers may be unreachable.
    • An error may occur during Open message negotiation.
    • During the establishment of an indirectly connected EBGP peer relationship, the TTL of EBGP Update messages defaults to 2 and is not manually modified.

20. The peer default-route-advertise command is executed on a BGP router to advertise a default route to neighboring routers. Which of the following statements regarding the change of local BGP routing table is true?

    • An inactive default route will be generated in the local BGP routing table, but this route will not be delivered to the IP routing table.
    • An active default route will be generated in the local BGP routing table and delivered to the IP routing table.
    • No default route will be generated in the local BGP routing table. 
    • A default route will be generated in the local BGP routing table. Whether the default route will be delivered to the IP routing table depends on the route selection result.