Chapter 3 - 11th - Data Communications Multiple Questions and Answers.




66.The data signals transmitted over telephone lines are in the form of choose which one is correct?
A. Digital
B. Analog
C. Digital pulses
D. None

67.“bps” stands for choose which one is correct?
A. Bytes per second
B. Baud per second
C. Bits per second
D. None

68.External modem is connected to the choose which one is correct?
A. Serial port
B. Parallel port
C. Both a and b
D. None

69.Which type of modem can be added to the system unit through expansion slot?
A. External modem
B. Wireless modem
C. Internal modem
D. Radio frequency modem

70.Which type of modem does not require any cable as transmission channel to transmit signals?
A. External modem
B. Wireless modem
C. Internal modem
D. All of above

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