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1. _______ data have discrete states and take discrete values.A) AnalogB) DigitalC) (a) or (b)

D) None of the above2. Signals can be ________.A) analogB) digitalC) either (a) or (b)D) neither (a) nor (b). _____ signals can have an infinite nu!ber of values in a range.A) AnalogB) DigitalC) (a) or (b)D) None of the above

". _______ signals can have onl# a li!ited nu!ber of values.A) AnalogB) DigitalC) (a) or (b)D) None of the above$. %re&uenc# and 'eriod are ______.A) inverse of each otherB) 'ro'ortional to each otherC) the sa!eD) none of the above. ________is the rate of change ith res'ect to ti!e.A) A!'litudeB) *i!eC) %re&uenc#D) +oltage,. _______ describes the 'osition of the avefor! relative to ti!e -.A) %re&uenc#B) haseC) A!'litudeD) +oltage/. A sine ave in the ______ do!ain can be re'resented b# one single s'ike in the

_____ do!ain.A) ti!e0 fre&uenc#B) fre&uenc#0 ti!eC) ti!e0 'haseD) 'hase0 ti!e. A _________ sine ave is not useful in data co!!unications0 e need to send a

_______ signal.A) co!'osite0 singlefre&uenc#B) singlefre&uenc#0 co!'ositeC) singlefre&uenc#0 doublefre&uenc#D) none of the above

1-. *he _____ of a co!'osite signal is the difference beteen the highest and theloest fre&uencies contained in that signal.

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A) fre&uenc#B) 'eriodC) bandidthD) a!'litude11. A(n)_________ signal is a co!'osite analog signal ith an infinite bandidth.

A) digitalB) analogC) either (a) or (b)D) neither (a) nor (b)12. Baseband trans!ission of a digital signal is 'ossible onl# if e have a ____channel.A) lo'assB) band'assC) lo rateD) high rate1. 3f the available channel is a ____ channel4 e cannot send a digital signal directl#

to the channel.A) lo'assB) band'assC) lo rateD) high rate1". %or a ______ channel4 the N#&uist bit rate for!ula defines the theoretical!a5i!u! bit rate.A) nois#B) noiselessC) band'assD) lo'ass1$. %or a ______ channel4 e need to use the Shannon ca'acit# to find the !a5i!u!

bit rate.A) nois#B) noiselessC) band'assD) lo'ass1. _________ can i!'air a signal.A) AttenuationB) DistortionC) Noise

D) All of the above1,. *he _________ 'roduct defines the nu!ber of bits that can fill the link.A) bandidth'eriodB) fre&uenc#a!'litudeC) bandidthdela#D) dela#a!'litude

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