A. is always less expensive than flat-rate service
B. is less expensive than flat-rate service only when the number of calls is large and the duration of each is short
C. is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
D. is never less expensive than flat-rate service
E. None of the above
Answer: Option B
This Question Belongs to Networking >> Networking Miscellaneous
A. Agreements on how communication components and DTE
B. Logical communication channels used for transferri
C. Physical communication channels used for transferr
D. None of the above
A. Simplex
B. Four wire circuit
C. Full Duplex
D. Half Duplex
Error detection at the data link level is achieved by
A. Bit Stuffing
B. Cyclic Redundancy Code
C. Hamming Code
D. Equalization
Which of the following is a wrong example of network layer?
A. Internet Protocol (IP) - ARPANET
B. X.25 Packet Level Protocol (PLP)-ISO
C. Source routing and domain naming-USENet
D. X.25 level 2-ISO
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