A. The application layer
B. The session layer
C. The data link layer
D. The transport layer
E. The network interface layer
F. The physical layer
The following three concepts are essential to the OSI model: service, interface andA．networksB．applicationsC．protocolsD．layers
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The following three concepts are essential to the OSI model:service,interface andA． networksB．applicationsC．protocolsD．layers
The X.25 standard specifies three layers of functionality.Which layers of the OSI model correspond to the X.25 layers?A．the Physical, Network, and Session LayersB．the Physical, Data Link, and Network LayersC．the Physical, Data Link, and Transport LayersD．the Physical, Session, and Presentation layers
The OSI(66)model, sometimes also called ISO or 7 layers reference model for communication, has been developed by the International Standards Organization in early 1980's.A．referentB．referenceC．referanceD．refering
In which of the following layers of the OSI model does the TCP protocol operate?()A.SessionB.NetworkC.Data linkD.Transport
Which of the following OSI model layers is used for logical addressing?()A. PhysicalB. TransportC. NetworkD. Data link
A crossover cable is MOST commonly associated with which of the following layers of the OSI model?()A.SessionB.ApplicationC.NetworkD.Physical
