GB0-371-ENU 試験問題を無料オンラインアクセス

The configuration command to enable the QinQ function of the Ethernet port on the H3C series switch is

• A.qinq enable

Regarding the comparison of the calculation convergence of RSTP and STP, the correct statement is

• A.Compared with STP, RSTP defines the edge port, which can make the port connected to the i machine quickly enter the forwarding state
• B.Compared with STP, RSTP defines the designated port fast switching mechanism, which can make the designated port quickly enter the forwarding state without waiting for twice the Forward Delay time
• C.Compared with STP, RSTP defines a fast root port switching mechanism^ This can make Alternate quickly become a new root port
• D.If STP wants to shorten the convergence time, you can only configure a smaller ForwardDelay time, but it may affect the stability of the network

The following statements about RP election in PIMSM are correct:

• A.After the BSR collects the announcement message information, it summarizes it into an RP-Set and sends it in multicast
• B.The announcement message information periodically sent by the C-RP router includes the C-RP address, priority, and the range of multicast groups it serves, etc.
• C.One RP can serve multiple multicast groups
• D.-A multicast group can select multiple RPs for load sharing

In the network connection as shown in the figure, SWA and SWB are Layer 3 switches, running STP+VRRP, and after the initial configuration is completed, SWA is the root of STP and Master SWC of VRRP is the Layer 2 switch, which is connected to the following terminals. The description about the network link failure is correct

• A.When the link between SWB and SWC is interrupted, the port status on the remaining STP links remains unchanged, and Forwarding is still maintained
• B.When the link between SWB and SWC is interrupted, VRRP Master will remain unchanged, and SWC downstream terminals can still communicate normally
• C.When only the link between SWB and SWC is intact in the figure, both SVVA and SWB will become VRRP masters, and the lower end of SWC can communicate with the gateway normally.
• D.When only the link between SWB and SWC is intact in the figure, the VRRP Master will remain unchanged, but the SWC downstream terminal cannot communicate with the gateway

In the network as shown in the figure, the interconnection lines between RT1, RT2, RT3, RT4 and RT5 are all Gigabit Ethernet cables, running OSPF, and after publishing the corresponding network segments to achieve routing interoperability, the routers all run the PIM SM protocol. RP is 1.1.1.1 RT4 is connected to the receiver, and IGMP is enabled on the corresponding interface. After the initial multicast traffic forwarded along the RPT is switched to SPT, which of the following routers constitutes SPT

• A.RT4
• B.RT1
• C.RT2
• D.RT5
• E.RT3