# Practice Quiz in Wire and Wireless Communications System Part 37

Online Practice Quiz in Wire and Wireless Communications System part 37 as one of the Communications Engineering topic.

This is the Online Practice Quiz in Wire and Wireless Communications System Part 37 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.

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#### Quiz in Wire and Wireless Communications System

Question 361. The point when the cell reaches maximum capacity occurs when the number of subscribers wishing to place a call at any given time equals the number of channels in the cell.

A. saturation

B. blocking traffic

D. Any of these

Question 362. The drum diameter of a facsimile machine is 90.2 mm and the scanning pitch is 0.2 mm per scan. Find the index of cooperation according to CCITT.

A. 451

B. 2.22 x 10^-3

C. 1417

D. 144

Question 363. A type of crosstalk which is a direct result of nonlinear amplification in analog communications system.

A. linear crosstalk

B. transmittance crosstalk

C. nonlinear crosstalk

D. coupling crosstalk

Question 364. A frequency-hopping spread-spectrum system hops to each of 100 frequencies every 10 seconds. How long does it spread on each frequency?

A. 0.2 sec/hop

B. 0.4 sec/hop

C. 0.3 sec/hop

D. 0.1 sec/hop

Question 365. A PABX is normally connected to the central office via an interface device called

A. branch exchange unit

B. subscriber loop unit

C. foreign exchange unit

D. local exchange unit

Question 366. It is comprised of two or more facilities, interconnected in tandem, to provide a transmission path between a source and a destination

A. telephone line

B. telephone set

C. telephone circuit

D. telephone trunk

Question 367. The maximum intelligibility of voice frequency is between

A. 2000 and 3000 Hz

B. 1000 and 3000 Hz

C. 2500 and 4000 Hz

D. 1000 and 2500 Hz

Question 368. The master control center for a cellular telephone system is the

A. Cell site

B. MTSO

C. Central office

D. Branch office

Question 369. Refers to the first generation of local loop system in telecommunication technology.

A. TACS

B. DECT

C. Analog cellular

D. GSM

Question 370. A card with an embedded integrated circuit that can be used for functions such as storing subscriber information for a PCS system.

A. smart card

B. SIM

C. Intelligent card

D. Credit card

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