【单选题】
Which term describes the process of encapsulating IPv6 packets inside IPv4 packets?()
A、tunneling
B、hashing
C、routing
D、NAT
A、tunneling
B、hashing
C、routing
D、NAT
A、Degree of saturation B、Saturation temperature C、Superheated temperature D、Degree of superheat
A、common forwarding class B、forwarding equivalence class C、equivalent class characteristics D、forwarding class characteristics