Unit 1: Communication: Question Preview (ID: 26410)


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The remote adding memory of a computer is the
a) Modem
b) Monitor
c) RAM
d) CPU

Tuners are needed for
a) Radio
b) TV
c) Radio and TV
d) Neither

What is the -brain- of the computer?
a) Modem
b) Monitor
c) RAM
d) CPU

What does fax mean?
a) an exact copy
b) a close copy
c) Facsimile and xray
d) None of the above

How is a fax similar to a telephone?
a) It sends information as electrical signals over satellites.
b) It sends information as electrical signals over the same lines as a telephone.
c) It sends information as electrical signals over radio waves.
d) All of the above

Label the parts of the radio:
a) Amplifier, Tuner
b) CRT, pixel
c) Facsimile, Resolution
d) Microphone, RAM

Label the parts of the television:
a) Amplifier, Tuner
b) CRT, Pixel
c) Facsimile, Resolution
d) Microphone, RAM

How is a digital signal different from an analog signal?
a) Digital signals are a series of pulses
b) Analog signals are continuous
c) Both A and B
d) Neither A or B

How does the TV produce a visual image on the screen?
a) It sends information as electrical signals over the same lines as a telephone.
b) When the key is pressed it completes an electrical circuit, sending a pulse of electricity along a wire
c) The voice is translated into radio signals then sent to satellites.
d) The red, green, and blue signals -electron emitting guns -CRT -dots of phosphor glow.

How is a cell phone message send differently than a regular telephone message?
a) When the key is pressed it completes an electrical circuit, sending a pulse of electricity along a wire
b) A series of dots and dashes that represent each letter of the alphabet as well as numbers and symbols
c) The sound is converted into an electrical signal then transmitted over radio waves.
d) The voice is translated into radio signals then sent to satellites.

How is a telegraph message sent?
a) When the key is pressed it completes an electrical circuit, sending a pulse of electricity along a wire.
b) A series of dots and dashes that represent each letter of the alphabet as well as numbers and symbols.
c) The sound is converted into an electrical signal then transmitted over radio waves.
d) The voice is translated into radio signals then sent to satellites.

Who invented the television?
a) Hertz
b) Baird
c) Fesseden
d) Marconi

Who sent the first sound message over the radio waves?
a) Hertz
b) Baird
c) Fesseden
d) Marconi

Who invented the printing press?
a) Gutenberg
b) Morse
c) Bell
d) Marconi

Who invented the telegraph?
a) Gutenberg
b) Morse
c) Bell
d) Marconi

Who invented the telephone?
a) Gutenberg
b) Morse
c) Bell
d) Marconi

Who sent the first radio transmission over a long distance?
a) Hertz
b) Morse
c) Fesseden
d) Marconi

Why is the printing press such an important invention?
a) It allowed ideas and knowledge to be passed without the use of wires.
b) It allowed ideas and knowledge to be passed quickly and economically from one place or person to another.
c) It allowed ideas and knowledge to be passed through radio waves.
d) It allowed ideas and knowledge to be passed through fiber optics.

Fiber Optics are used to trasmsit these types of signals
a) Electrical
b) Radio
c) Sound
d) Light

Which of these devices are only input devices on a computer
a) Modem, CD, Keyboard, Microphone, Mouse
b) Monitor, Printer, RAM
c) Hard drive, flash drive, Netword card
d) All of the above.

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