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46. 

Which of the following items is not used in Local Area Networks (LANs)?
A. Computer
B. Modem
C. Printer
D. Cable
E. None of the above
47. 

Error detection at a data link level is achieved by
A. bit stuffing
B. cyclic redundancy codes
C. Hamming codes
D. equalization
E. None of the above
48. 

RS-232-G
A. is an interface between two data circuit terminating equipment as examplified by a local and remote modem
B. is an interface standard between Data terminal Equipment and Data Circuit Terminating Equipment
C. specifies only the mechanical characteristics of an interface by providing a 25-pin connector
D. requires only 7 pin out of 25 in order to transmit digital data over public telephone lines
E. None of the above
49. 

A subdivision of main storage created by operational software is referred to as a:
A. compartment
B. time-shared program
C. divided core
D. partition
E. None of the above