H3CSE-RS-SW 認定 GB0-372-ENU 試験問題:

1. How does Overlay technology solve the problems and challenges encountered in the development of cloud computing? (Multiple choice)

A) For the Underlay network, the data packets of the Overlay network are just forwarding of the tunnel endpoint address, so the MAC address specification requirements of the Underlay network (especially the access switch) are greatly reduced.
B) Overlay expands the number of isolation identification bits. Compared with using VLAN to achieve network isolation, the isolation capability of Overlay network is greatly improved.
C) Overlay network only needs edge devices to support Overlay, and the middle Underlay network can use traditional devices, which can protect existing investments and facilitate technology implementation.
D) Overlay encapsulates the Layer 2 message in the IP message, allowing the virtual machine to achieve Layer 2 intercommunication across the Layer 3 network

2. As shown in the figure, there is no connection between SWA and SWB at the beginning. SWA and SWB enable RSTP. When the topology is stable, connect the ports E1/0/1 of SWA and SWB. Assuming that SWA will become the new root bridge, which of the following is correct? (Multiple choice)

A) Port E1/0/1 of SWA and SWB will send a Proposal message, requesting to enter the forwarding state
B) SWB will immediately reply with an Agreement message after receiving the Proposal message sent by SWA
C) After receiving the Proposal message sent by SWA, SWB will start the synchronization process to block the old root port, designated port, and edge port.
D) SWB does not need to generate BPDU by itself. The content of the Agreement message it responds to is copied from the Proposal message sent by SWA.

3. The Ethernets port of switch SWA is configured as follows:
Interface Ethernet 1/0/1 port link-type trunk
Port trunk permit vlan 10 port trunk pvid vlan 20
Now we need to change the Ethernet 1/0/1 port of switch SWA to a Hybrid port, with PVID of VLAN 20, and do not tag the data frames of VLAN 20 when sending them, but tag the data frames of VLAN 10 when sending them. Which of the following configuration processes is correct?

A) [SWA-Ethernet1/0/1] port link-type hybrid
B) [SWA-Ethernet1/0/1] undoportlink-type
[SWA-Ethernet1/0/1] portlink-typeHybrid
[SWA-Ethernet1/0/1] port hybrid pvid vlan 20
[SWA-Ethernet1/0/1] port hybrid vlan 10 tagged
C) [SWA-Ethernet1/0/1] port link-type access
[SWA-Ethernet1/0/1] port access vlan 20
[SWA-Ethernet1/0/1] port link-type hybrid
[SWA-Ethernet1/0/1] port hybrid vlan 10 tagged
D) [SWA-Ethernet1/0/1] portlink-type access
[SWA-Ethernet1/0/1] port link-type hybrid
[SWA-Ethernet1/0/1] port hybrid pvid vlan 20
[SWA-Ethernet1/0/1] port hybrid vlan 10 tagged
E) None of the above is correct

4. Which of the following statements about the basic concepts of MSTP is correct? (Multiple choice)

A) Master port refers to the region boundary port of the MST region
B) If the MST region is regarded as a logical bridge, the Master port is the root port of the logical bridge.
C) The Master bridge is the domain root of IST
D) The role of the master port is the same on all MSTIs

5. When a switch running MSTP and a switch running RSTP work together, which of the following is correct? (Multiple choice)

A) The MSTP switch will parse the RSTBPDU into an MST BPDU, where IRPC is 0
B) MSTP switches and RSTP switches can belong to the same MST region
C) The RSTP switch will treat the MST region as a logical switch, and the bridge ID is the ID of the switch in the MST region that is actually connected to the RSTP switch.
D) The MSTP switch will regard the RSTP switch as an MSTP domain consisting of a single switch.

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