Which of the following statements is incorrect?
A. The difference between synchronous and asynchronous transmission is the clocking derived from the data in synchronous transmission
B. Half-duplex line is a communication line in which data can move in two directions, but not at the same time.
C. Teleprocessing combines telecommunications and DP techniques in online activities.
D. Batch processing is the preferred processing mode for telecommunication operations
E. None of the above
Answer: Option D
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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
Which statement is incorrect