Networking Miscellaneous - Practice Test

[#181] The cheapest modems can transmit

(A) 300 bits per second

(B) 1,200 bits per second

(C) 2,400 bits per second

(D) 4,800 bits per second

Correct Answer

(A) 300 bits per second

[#182] Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?

(A) Interface

(B) Modem

(C) Attenuation

(D) Teleprocessor

Correct Answer

(B) Modem

[#183] What is the usual number of bits transmitted simultaneously in parallel data transmission used by microcomputers?

(A) 16

(B) 9

(C) 8

(D) 4

Correct Answer

(B) 9

[#184] The receive equalizer reduces delay distortions using a

(A) tapped delay lines

(B) gearshift

(C) descrambler

(D) difference engine

Correct Answer

(A) tapped delay lines

[#185] Error rate is

(A) an error-detecting code based on a summation operation performed on the bits to be checked.

(B) a check bit appended to an array of binary digits to make the sum of all the binary digits.

(C) a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and

(D) the ratio of the number of data units in error to the total number of data units

Correct Answer

(D) the ratio of the number of data units in error to the total number of data units

Networking Miscellaneous - Study Mode

[#181] The cheapest modems can transmit

Correct Answer

[#182] Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?

Correct Answer

[#183] What is the usual number of bits transmitted simultaneously in parallel data transmission used by microcomputers?

Correct Answer

[#184] The receive equalizer reduces delay distortions using a

Correct Answer

[#185] Error rate is

Correct Answer