H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 04

H12-224 : HCNP-R&S Fast Track (Huawei Certified Network Professional – Routing & Switching Fast Track) : Part 04

1. Which of the following statements about STP Designated Port is true?

   • Each of the bridge can have one Designated Port only.
   • Designated Port is responsible for forwarding packets to its connected network segments. 
   • The only path leading to the Root Bridge is through Designated Port.
   • Designated Port forwards the data packet from its corresponding switch to the Root Switch.

2. When configuring VLAN mapping, you must set the priority of outer VLAN ID.

   • True
   • False 

3. Which are the two parts in the port identifier of the uplink interface on a non-root switch?

   • 1-bit port priority and 1-bit port number 
   • 1-bit port priority and 2-bit port number
   • 2-bit port priority and 1-bit port number
   • 2-bit port priority and 2-bit port number

4. Before configuring 802.1x services, you need to determine the configuration roadmap and prepare data.

   Which are general steps in the configuration roadmap? (Choose three.)

   • Configure a Tftp server.
   • Configure an AAA authentication template.
   • Configure a domain.
   • Configure 802.1x authentication.

5. Which statement is false?

   • The switch supports 1:1 VLAN mapping.
   • The switch does not support N:1 VLAN mapping on an interface. 
   • The switch can perform VLAN mapping for double-tagged packets.
   • The switch can map the outer VLAN ID of packets to another VLAN ID.

6. On the RSTP network as shown in the figure, what is the port role of SWC E0/1 according to the configuration? (Choose two.)

   

   •  Designated port 
   • Root port
   • Alternate port
   • Edge port 

7. GARP involves various messages. Besides JoinIn message and Leave message, which are also the GARP messages? (Choose three.)

   • Notice
   • Empty
   • JoinEmpty
   • LeaveAll

8. On an STP network, before the interface status transits from non-forwarding to forwarding, how many Forward Delay intervals does the interface wait for?

   • 2
   • 3
   • 4
   • 5

9. The dot1x command is used to enable 802.1x authentication globally or on an interface.

   Which statements about the undo dot1x command are true? (Choose three.)

   • It is used to disable 802.1x authentication globally. 
   • It will disconnect online users from the interface; therefore, use the command with caution.
   • It is used to disable 802.1x authentication on an interface.
   • Ensure that there are no online users before you run the undo dot1x command. Otherwise, running the undo dot1x command fails.

10. Which is the port state defined in RSTP?

    • Discarding
    • Learning
    • Forwarding
    • All of the above 

11. Which statements about VLAN mapping are true? (Choose two.)

    • When sending a frame from the local VLAN, the switch replaces the VLAN tag in the frame with another VLAN tag.
    • When receiving a frame from another VLAN, the switch replaces the VLAN tag of the frame with the local VLAN tag.
    • When an interface receives a frame from another VLAN, it does not replace the VLAN tag of the frame. The interface replaces the VLAN tag of the frame with another VLAN tag only when it sends a frame.
    • The interface replaces the VLAN tag of only the frame received from another VLAN, but does not change the VLAN tag of the frame it sends out.

12. Some vendors set the TPID value in the outer VLAN tag of QinQ packets to the non-protocol value.

    To be compatible with these vendors’ devices, the TPID value on Huawei switches is adjustable.

    Which is the default value of the TPID value on Huawei switches?

    • 0x9200
    • 0x9100
    • 0x8200
    • 0x8100 

13. In a switching network that runs RSTP, the topology change notification message will not be sent when the switch detects that the Alternate Port is failed.

    • True 
    • False

14. Which statements about the access interface are true? (Choose three.)

    • Only the VLAN whose ID is the same as the PVID of the access interface are allowed on the access interface.
    • When receiving an untagged frame, the access interface adds its own PVID to the frame.
    • The access interface sends only untagged frames to the peer device.
    • None of the above.

15. Which are contained in a GARP participant? (Choose two.)

    • GARP Application 
    • GARP Information Propagation (GIP)
    • GARP Information Declaration (GID) 
    • Interface LLC

16. On a switch running GVRP, each interface is considered as a participant. The participants can exchange information.

    • True 
    • False

17. Which statement about VLAN is false?

    • VLAN tag contains a 3-bit priority field. The priority value ranges from 0 to 7. It is used for differentiated service forwarding.
    • The priority in the VLAN tag can be mapped to the internal priority of the switch, for differentiated service forwarding.
    • The priority in the VLAN tag can be changed on the switch.
    • The priority in the VLAN tag cannot be changed. 

18. In RSTP, which statements about the alternate port and backup port are true? (Choose two.)

    • The alternate port is a backup of the root port.
    • The backup port is a backup of the designated port.
    • The switch that the backup port belongs to is not the designated switch on the network segment connected to the interface.
    • The switch that the alternate port belongs to is the designated switch on the network segment connected to the interface.

19. RSTP has all functions that STP has and it is backward compatible with STP.

    • True 
    • False

20. STP distributes configuration message by sending BPDU packet to each other.

    • True 
    • False