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Exam : HuaWei GB0-323English
Title : Constructing Enterprise-level Switching Networks


1. 801D defines the Disabled state of STP. Which of the following is correct about the port in the Disabled state? ( )
A. It does not receive/send any packet.
B. It does not receive/forward data. It receives but does not send BPDUs, and does not learn addresses.
C. It does not receive/forward data. It receives and forwards BPDUs, and does not learn addresses.
D. It does not receive/forward data. It receives and forwards BPDUs. It begins to learn addresses.
E. It receives or forwards data. It receives and forwards BPDUs. It begins to learn addresses.
Answer: A

2. Which of the following statements is correct? ( )
A. igmp timer query seconds is used to set the interval of the query packet sending on the switch.
B. igmp timer query seconds is used to set the maximum response time in the query packet.
C. igmp max-response-time seconds is used to set the maximum response time in the query packet.
D. igmp timer other-querier-present seconds is used to set the timeout time of the snooping querier on the switch.
Answer: ACD

3. VLAN can be defined based on ( ).
A. IP addresses
B. Network layers
C. MAC addresses
D. Ports
Answer: ACD

4. STP is a routing protocol.
A. True
B. False
Answer: B

5. On the H3C switch, VRRP can be used to implement ( ).
A. Gateway backup of the LAN
B. Gateway backup of the WAN
C. Load balance
D. Port monitoring for improving network reliability
Answer: ACD

6. Which of the following statements is right about 802.1x ports? ( )
A. 802.1x supports the port-based authentication only.
B. The ports of authenticator fall into controlled ports and uncontrolled ports.
C. Uncontrolled ports always forward bi-directionally whether the authentication is passed or not.
D. Controlled ports transmit EAPOL protocol packets only.
Answer: BC

7. In STP, it is suggested to modify the value of Max Age indirectly through setting the network diameter. ( )
A. True
B. False
Answer: A

8. Multicast protocols fall into group member management protocols and multicast routing protocols. Which of the following is a group member management protocol? ( )
A. GVRP
B. GMRP
C. IGMP
D. PIM
Answer: C

9. Which of the following methods cannot be used to configure H3C middle-end and low-end switches? ( )
A. Console
B. Xmodem
C. Telnet
D. Dial-up with Modems
Answer: B

10. The reason why RSTP can implement fast restoration of the network is that ( ).
A. RSTP reduces the delay from the Blocking state to the Forwarding state.
B. The port will enter the Forwarding state immediately if the old Root port turn in the Blocking state and the remote end of the new Root port is in the Forwarding state.
C. A non-edge Designated port needs only one handshake with the downstream bridge to transfer from the Blocking state to the Forwarding state quickly.
D. Soon after the bridge is started, the edge port enters the Forwarding state without delay.
Answer: ABCD

11. IGMP is a signaling protocol between hosts and the router, which defines the mechanism to establish and maintain the multicast membership between hosts and the router. ( )
A. True
B. False
Answer: A

12. Which of the following is correct about the PIM Hello message? ( ):
A. The Hello message is sent periodically to all PIM routers in multicast group 224.0.0.13 to establish PIM neighbourship.
B. The Hello message is used to select the DR on the multi-access network.
C. As the IGMP message, the Hello message is used to maintain the relationship between interfaces and host members.
D. When IGMP V1 is adopted on the interface, the Hello message is used to select the DR as the IGMP V1 querier.
Answer: ABD

13. The length of PAUSE MAC control frame defined in IEEE802.3x is ( ).
A. 16 bytes
B. 32 bytes
C. 64 bytes
D. 96 bytes
Answer: C

14. On the H3C S middle-end/low-end switches, STP is enabled by default. ( )
A. True
B. False
Answer: B