Practice Quiz in Wire and Wireless Communications System Part 13

This is the Online Practice Quiz in Wire and Wireless Communications System Part 13 as one of the Communications Engineering topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Examination Questions in Electronic System and Technologies, Communications Books, Journals and other Communications References.

Continue Part XIII of the Online Practice Quiz

Quiz in Wire and Wireless Communications System Question 121. Which resolution produces the best quality fax? A. 96 lines per inch B. 150 lines per inch C. 200 lines per inch D. 400 lines per inch Question 122. Transient protection is provided for integrated telephone circuits is typically provided by A. Bridge rectifiers B. Zener diodes C. Inductors D. Capacitors Question 123. The DTMF generator in an electronic phone produces tones using a(an) A. LC circuit B. RC circuit C. Digital divider circuit D. Digital multiplier circuit Question 124. Radio communication operation service between mobile and land stations or between mobile stations. A. land mobile B. land mobile satellite service C. mobile service D. maritime mobile service Question 125. The modulation technique used by DECT. A. GFSK B. ASK C. QAM D. PSK Question 126. The sidetone is A. A type of feedback B. Determined by the balancing network C. Permits the talker to hear his/her own voice D. All of these Question 127. Time division multiplexing is used for A. Analog transmission B. Digital transmission C. Both of these D. None of these Question 128. What is the number of channels for Band A and for Band B in Digital AMPS? A. 832 B. 416 C. 666 D. 888 Question 129. Which office local is the local central office? A. 2 B. 3 C. 4 D. 5 Question 130. The parameter that most affects transmission of the high speed modem data is A. Phase distortion B. Amplitude distortion C. Frequency shift D. Impulse noise

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