# Practice Quiz in Wire and Wireless Communications System Part 40

Online Practice Quiz in Wire and Wireless Communications System part 40 as one of the Communications Engineering topic.

This is the Online Practice Quiz in Wire and Wireless Communications System Part 40 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 XL of the Online Practice Quiz

#### Quiz in Wire and Wireless Communications System

Question 391. Transmission of data in two directions on a channel by using different time slots for each directions.

A. time-division multiplexing

B. time-division multiple access

C. time-division duplexing

D. time-division

Question 392. In cellular phone, a memory location that stores the telephone number(s) to be used on the system.

A. EPROM

B. UVPROM

C. EEPROM

D. NAM

Question 393. ____ is measuring the propagated field strength over the projected service area.

D. None of these

Question 394. The bit length of System Identification (SID)

A. 32

B. 15

C. 10

D. 8

Question 395. The largest cable used in a local loop, usually 3600 pair of copper wires placed underground or in conduit.

A. feeder cable

B. distribution cable

C. drop wire

D. drop-wire cross-connect cables

Question 396. A class I mobile phone using AMPS has an ERP of

A. 6 dBW

B. 2 dBW

C. -2 dBW

D. -6 dBW

Question 397. Soft handoff normally takes ____ of time delay.

A. 400 ms

B. 300 ms

C. 200 ms

D. 100 ms

Question 398. That portion of the local loop that is strung between the poles.

A. aerial

B. distribution cable

C. feeder cable

D. twisted-pair

Question 399. It is the ratio in dB of the power of a signal at that point to the power the same signal would be 0-dBm at any point in the transmission system.

A. data level

B. baseband level

C. voice level

D. transmission level

Question 400. Technique used in spread spectrum that adds a high-bit rate pseudorandom code to a low bit rate information signal to generate a high-bit rate pseudorandom signal closely resembling noise that contains both the original data signal and pseudorandom noise.

A. direct-sequence

B. frequency-division multiplexing

C. frequency hopping

D. CDMA