Computer and Information Technology (Physics) Part-IV

Total Questions: 50

41. Which of the following statements is correct? [R.A.S/R.T.S.(Pre) 2013]

Correct Answer: (d) Modem converts the analog signal into digital signal and vice-versa.
Solution:

The full form of the modem is Modulator/Demodulator. It converts digital signal to analog signal and analog signal to digital signal.

42. The device by which data are transferred by telephone with the help of binary signals is- [U.P.P.C.S. (Pre) 2002, U.P.P.C.S. (Mains) 2007]

Correct Answer: (a) Modem
Solution:

Modem, short for Modulator/Demodulator, is a hardware device that allows a computer to send and receive information over telephone lines by converting digital signal into an analog signal and analog signal into digital signal.

Thus, modem performs modulation and demodulation and it is required for sending and receiving data between computers around the world through telephone lines.

43. Which of the following performs, modulation and demodulation? [Chhattisgarh P.C.S. (Pre) 2019]

Correct Answer: (c) Modem
Solution:

Modem, short for Modulator/Demodulator, is a hardware device that allows a computer to send and receive information over telephone lines by converting digital signal into an analog signal and analog signal into digital signal.

Thus, modem performs modulation and demodulation and it is required for sending and receiving data between computers around the world through telephone lines.

44. For sending and receiving data between computers around the world through telephone lines, we need: [U.P. Lower Sub. (Mains) 2015]

Correct Answer: (b) Modem
Solution:

Modem, short for Modulator/Demodulator, is a hardware device that allows a computer to send and receive information over telephone lines by converting digital signal into an analog signal and analog signal into digital signal.

Thus, modem performs modulation and demodulation and it is required for sending and receiving data between computers around the world through telephone lines.

45. Which system or arrangement connects microcomputer with telephone? [U.P. Lower Sub. (Pre) 2013]

Correct Answer: (b) MODEM
Solution:

Modem, short for Modulator/Demodulator, is a hardware device that allows a computer to send and receive information over telephone lines by converting digital signal into an analog signal and analog signal into digital signal.

Thus, modem performs modulation and demodulation and it is required for sending and receiving data between computers around the world through telephone lines.

46. A modem converts: [M.P.P.C.S. (Pre) 2017]

Correct Answer: (c) Both (A) and (B)
Solution:

Modem, short for Modulator/Demodulator, is a hardware device that allows a computer to send and receive information over telephone lines by converting digital signal into an analog signal and analog signal into digital signal.

Thus, modem performs modulation and demodulation and it is required for sending and receiving data between computers around the world through telephone lines.

47. Such a device which convert data into impulses and transmitted it through terminal to computer or computer to terminal over telephone line, it is- [U.P. Lower Sub. (Pre) 2013, U.P.U.D.A./L.D.A. (Pre) 2002]

Correct Answer: (d) Modem
Solution:

Modem, short for Modulator/Demodulator, is a hardware device that allows a computer to send and receive information over telephone lines by converting digital signal into an analog signal and analog signal into digital signal.

Thus, modem performs modulation and demodulation and it is required for sending and receiving data between computers around the world through telephone lines.

48. A modem is a hardware device that interfaces - [Uttarakhand Lower Sub. (Pre) 2010, Uttrakhand U.D.A./L.D.A. (mains) 2006]

Correct Answer: (d) Telephone lines and computer equipment
Solution:

Modem, short for Modulator/Demodulator, is a hardware device that allows a computer to send and receive information over telephone lines by converting digital signal into an analog signal and analog signal into digital signal.

Thus, modem performs modulation and demodulation and it is required for sending and receiving data between computers around the world through telephone lines.

49. The form of information signal used in sending fax and email is: [Jharkhand P.C.S. (Pre) 2021]

Correct Answer: (b) Analog and Digital signal both
Solution:

The form of information signal used in sending fax and email through phone lines is both analog and digital signal.

50. ........ is the process by which the receiver interprets the symbols used by the source of the message. [M.P.P.C.S. (Pre) 2023]

Correct Answer: (b) Decoding
Solution:

Decoding is the process by which the receiver interprets the symbols used by the source of the message.