A.OSI was developed as an alternative, open standard to IBMs SNA model.

B.OSI protocols were no longer used after TCP/IP was developed.

C.OSI model is much simpler than TCP/IP.

D.OSI model is maintained exclusively by the IETF.

A.Resolves a Mac address given a specific IP address.

B.Maps a private address to a well known port number.

C.Allows a single public IP address to represent multiple private IP addresses simultaneously.

D.Provides a one to one mapping from a private to a public address.

A.Transport Layer.

B.IP Layer.

C.Data Link Layer

D.Application Layer.

A.It is responsible for encapsulating application data into TCP/UDP messages

B.It is responsible for encapsulating packets into IP datagrams and routing them

C.It is responsible for the timing of the signals on physical media.

D.It is responsible for encapsulating packets into frames for transmission on physical media

A.The CE device

B.The egress LER

C.The ingress LER

D.The P router