Practice Quiz in Wire and Wireless Communications System Part 22

This is the Online Practice Quiz in Wire and Wireless Communications System Part 22 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 XXII of the Online Practice Quiz

Quiz in Wire and Wireless Communications System Question 211. What is the system used by Personal Communications Network? A. PCS 1900 B. Modified GSM C. AMPS D. DCS 1800 Question 212. Each cell site contains a A. Repeater B. Control computer C. Direct link to a branch exchange D. Touch-tone processor Question 213. A cellular system is capable of coping with handoffs once every 2 minutes. Suppose this system is in the city with maximum car speeds of 65km/hr. What is the maximum cell radius for this urban system? A. 1.08 km B. 3 km C. 5 km D. 2 km Question 214. A ___ is a computerized center that is responsible for connecting calls, recording call information and billing. A. Base station B. Mobile switching center C. Cell D. Mobile station Question 215. The unlicensed national information infrastructure band A. 5 GHz B. 54 GHz C. 2.4 GHZ D. 880MHz Question 216. Technique of spread spectrum that breaks message into fixed-size blocks of data with each block transmitted in sequence except on the different carrier frequency. A. spread spectrum B. time-division multiplexing C. frequency-hopping D. direct sequence Question 217. Multiple access scheme used by DECT A. CDMA B. FDMA/CDMA C. TDMA D. FDMA Question 218. Base station transmitter output power of Improved Mobile System (IMTS) A. 100-W to 200-W range B. 200-W to 300-W range C. 150-W to 400-W range D. 300-W to 400-W range Question 219. In mobile wireless communication, the radio equipment and the propagation path A. FSL B. air interface C. direct link D. mobile interface Question 220. An automobile travels at 60 km/hr. Find the time between fades in the car uses a PCS phone at 1900 MHz. A. 2.4 ms B. 3.4 ms C. 4.7 ms D. 5.1 ms

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