What is the main reason why RSTP converges faster than STP?

• A.RSTP has less overhead
• B.RSTP is not based on timer convergence
• C.RSTP increases the type of port status
• D.RSTP has a smaller timer

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The router HW1 exists as an MPLS LSR router in the network of the operator HW. The router receives a packet carrying a label, but the label entry does not exist in its LFIB.
So how does the router handle the message?

• A.Router HW1 uses LDP to create an LSP and creates a new path for the label carried in the packet in the LFIB.
• B.Router HW1 will strip the label and find the IP destination address of the FIB.
• C.Router HW1 will discard the message.
• D.Router HW1 will forward the message using the default label.

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Which of the following statements about VXLAN messages is correct? (Multiple choice)

• A.The source UDP port number is 4789
• B.VNI has 24 bits and is used to distinguish VLAN segments.
• C.The outer destination IP address is the IP address of the remote VTEP of the VXLAN tunnel.
• D.Destination UDP port number is 4789

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What are the comparison items of the main switch election in the stack? (Multiple questions)

• A.Stack ID
• B.MAC address
• C.Running status
• D.Stacking priority

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For Layer 2 VPN technology, which of the following statements are correct? (Multiple Choice)

• A.BGP EVPN solves the problem of MAC address drift and multi-tenancy that VPLS cannot support.
• B.BGP EVPN supports tenant isolation, multi-homing and broadcast suppression
• C.The VPLS configuration is highly complex. The Layer 2 network transparently transmits BUM packets.
• D.VPLS is a widely used technology on the live network. It can provide Layer 3 packet transparent transmission and achieve multi-point access.

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