H3CSE-Routing & Switching GB0-371-ENU

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H3C Constructing H3C High-Performance Campus Networks Sample Questions:

1. What is correct about the STP root bridge?

A) All ports on the root bridge are fixed ports
B) The root bridge refers to the bridge with the highest priority on a PhysicalSegment
C) Alternate ports may exist on the root bridge
D) There is no root port on the root bridge

2. NTP provides multiple working modes in order to adapt to different application scenarios. Which of the following descriptions of NTP working modes are correct is

A) In the peer mode, the active peer and passive peer can synchronize clocks with each other
B) Broadcast mode is suitable for dry point-to-multipoint network applications, improving deployment and operating efficiency
C) Multicast mode is suitable for situations where the IP address of the server or peer is uncertain, simplifying deployment
D) The client/server mode is suitable for the situation where the address of the clock server is known, and can appropriately improve the possibility of clock synchronization

3. In the switching network as shown in the figure, all three switches only have the default VLAN1, the interconnection ports of the three switches are trunks, and all VLANs are allowed to pass, and the three switches have the global and port GVRP functions enabled. VLAN 10 is created on the switch SWA, VLAN 20 is created on the SWC, and the GVRP registration mode of the Ethemet1/0/1 port is set to Fixed on the switch SWA, and the status information of each Trunk port is checked on the three switches. The correct one is displayed below (Choose one or more)

A) [SWB]display interface Ethernet 1/0/2 Ethernetl/0/2 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10, 20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
B) [SWC]display interface Ethernet 1/0/1 Ethernetl/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10, 20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
C) [SWA]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10, 20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q
D) [SWB]display interface Ethernet 1/0/1 Ethernetl/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10, 20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

4. In the switching network as shown in the figure, VLAN10 is set as Super VLAN on the switch SWA, VLAN2 and VLAN3 are Sub VLANs of VLAN10, port Ethernet1/0/3 is Trunk port, PVID is VLAN1, allowing all VLANs to pass through; Create VLAN2~VLAN20 on SWB, port Ethernet1/0/4 as Trunk port, PVID is VLAN1, allowing all VLANs to be judged by setting the IP address of each device as shown in the figure (choose one or more)

A) SWB can communicate with PCC
B) SWB can communicate with PCB
C) None of the above answers
D) SWB can communicate with PCA
E) SWB can communicate with SWA

5. Regarding the compatibility configuration of MSTP, there are correct statements

A) If the MSTP message format received by the port is inconsistent with the configured message format, the port will become the designated port and the port status will remain in the Discarding state to prevent loops.
B) The MSTP compatible working mode of the port can be configured through the command stpcompliance. The parameter auto means that the port only sends and receives MSTP messages that are compatible with non-standard formats.
C) The port of the H3C switch can be configured to automatically recognize the format of the MSTP message and determine the format of the message sent according to the recognition result
D) If the port identification/sending MSTP message mode is configured as dotls, the port will only send and receive standard format MSTP messages

Solutions: