On a network, some switches are enabled with RSTP and some switches are enabled with STP.
What will happen?

• A.A Huawei switch changes from RSTP to STP. After the STP-enabled switch is removed from the network, the RSTP-enabled switch can be moved back to the RSTP mode.
• B.A Huawei switch changes its mode from STP to RSTP. After the RSTP-enabled switch is removed from the network, the STP-enabled switch can be moved back to the RSTP mode.
• C.STP and RSTP are compatible with each other, but the rapid convergence of RSTP is unavailable.
• D.STP and RSTP calculation are performed independently.

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In special scenarios, when advertising routes to an IBGP peer, a BGP device needs to set the next hop to its IP address to prevent blackhole routes.
Which of the following commands can be run in this case?

• A.peer next-hop-local
• B.peer mpls-local-ifnet
• C.peer private-nexthop
• D.peer next-hop-invariable

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The traffic policy supports calling on the interface, but only supports calling the traffic policy in the outbound direction of the interface.

• A.TRUE
• B.FALSE

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Which of the following descriptions about the basic concepts of VRRP are wrong? (Multiple choice)

• A.VRRP uses VRID to identify virtual routers
• B.A VRRP router may belong to one or more virtual routers
• C.A virtual router can only have one IP address, which is configured by the user
• D.The VRP backup group can consist of one Master device and multiple Master devices, and is regarded as the default gateway of hosts in a shared LAN

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Unlike STP, RSTP has only one BPDU type, its value is 2, and there is no TCN BPDU.

• A.TRUE
• B.FALSE

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