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A.conformanceB.circuitlikeC.searchingD.secrecy
A.conformance
B.circuitlike
C.searching
D.secrecy
A.conformance
B.circuitlike
C.searching
D.secrecy
Packets are routed throught one or more Virtual Circuits known as(68). Most Virtual Circuits are(69), which means that the network provider sets up all DLCI connections at subscription time.(70)are also part of the Frame. Relay specification. They privide a link that only lasts only as long as the session.
A.Datagram Switching
B.Datagram Routing
C.Packet Switching
D.packet Routing
A.解密和验证
B.解密和签名
C.加密和签名
D.加密和验证
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