VPN技术采用的隧道协议包括 A: PPTP(Point to Point Tunneling Protocol) B: L2TP (Layer 2 Tunneling Protocol) C: IPSec (Internet Protocol Security) D: HTTP (Hyper Text Transfer Protocol over SecureSocket Layer)
VPN技术采用的隧道协议包括 A: PPTP(Point to Point Tunneling Protocol) B: L2TP (Layer 2 Tunneling Protocol) C: IPSec (Internet Protocol Security) D: HTTP (Hyper Text Transfer Protocol over SecureSocket Layer)
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