A.The ICMP request of the ping, the packet size is Z (excluding IP and ICMP headers)

B.The ping sends Y ICMP requests

C.The source IFP address of the ping packet is X

D.The ping packet belongs to VPN instance M

A.Unable to determine the device type of R3

B.The device type of R3 must be Level-2

C.The device type of R3 must be Level-1-2

D.The device type of R3 must be Level-1

A.The BGP/MPLS IP VPN network architecture consists of three parts: CE (Customer Edge), PE (ProviderEdge) and P (Provider). PE and P are operator equipment, and CE is BGP/MPLS IP VPN user equipment

B.In general, CE devices cannot perceive the existence of VPN, and CE devices do not need to support MPLS, MP-BGP, etc.

C.Sites can access each other through VPN, and a site can only belong to one VPN

D.The P device only needs to have basic MPLS forwarding capabilities, and does not maintain VPN-related information

A.Whether the configuration is saved

B.The software version the device is running

C.License information

D.Patch Information