Ait235 Quizes Essay

5732 Words Nov 27th, 2012 23 Pages
WEEK 1 QUIZ
The _________ is a term for the device or unit that originates the information transfer.
Answer
* receiver * transmitter * repeater * amplifier
5 points
Question 2 A half-duplex circuit carries information ______________ .
Answer
* both ways but only one way at a time * only one way * both ways simultaneously * none of the above
5 points
Question 3
The _________ is a term for the device or unit that receives the information transfer.
Answer
* receiver * transmitter * repeater * amplifier
5 points
Question 4
A _________ area network usually has an extremely limited distance of a few feet or meters.
Answer
* local * metropolitan *
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Answer * does not use physical conductors * uses electromagnetic energy in the form of radio or light * are referred to as airwave or space wave systems * all of the above
5 points
Question 3 Wired media is a term for media which is ____________.
Answer
* conducted * bounded * guided * all of the above
5 points
Question 4 Wired media generally ____________.
Answer
* use metallic or glass conductors * has some form of twisting, shielding, cladding or insulating * carries some form of electrical or optical energy * all of the above
5 points
Question 5
A signal's frequency is usually expressed in ______________ .
Answer
* meters * Hertz * feet * none of the above
5 points
Question 6
A signal's wavelength is usually expressed in ______________.
Answer
* meters * Hertz * feet * none of the above
5 points
Question 7
The wavelength symbol (λ) is the lower case Greek letter ________.
Answer
* alpha * delta * lambda * gamma
5 points
Question 8
Signal frequency (f) and signal wavelength (λ) are related by ___________.
Answer
* f times c = λ (where c is the speed of light: 3 x 108 meters / second) * f = c / λ (where c is the speed of light: 3 x 108 meters / second) * f = λ / c (where c is the speed of
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