MCQs in Wire and Wireless Communications System Part VII

Compiled MCQs in Wire and Wireless Communications System Part 7 of the series as one topic in Electronic System and Technologies (Communications Engineering) in the ECE Board Exam.

MCQs in Wire and Wireless Communications - Part VII

This is the Multiples Choice Questions Part 7 of the Series in Wire and Wireless Communications System 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.

Online Questions and Answers Topic Outline

  • MCQs in Mobile Communications
  • MCQs in Cellular Communication
  • MCQs in Trunk Radio
  • MCQs in Radio Paging System
  • MCQs in Facsimile
  • MCQs in Telephone Set
  • MCQs in Signaling
  • MCQs in Transmission Considerations in long distance network
  • MCQs in Insertion Loss
  • MCQs in VF Repeaters
  • MCQs in Traffic Calculations
  • MCQs in Reference Equivalent and Standards
  • MCQs in Telephone Networks
  • MCQs in Billing
  • MCQs in Network Hierarchy and Class type
  • MCQs in Connection and Performance of Wire and Wireless Communications

MCQs in Wire and Wireless Communications System Series

Following is the list of multiple choice questions in this brand new series:

Wire and Wireless Communications MCQs
PART 1: MCQs from Number 1 – 50                        Answer key: PART I
PART 2: MCQs from Number 51 – 100                   Answer key: PART II
PART 3: MCQs from Number 101 – 150                 Answer key: PART III
PART 4: MCQs from Number 151 – 200                 Answer key: PART IV
PART 5: MCQs from Number 201 – 250                 Answer key: PART V
PART 6: MCQs from Number 251 – 300                 Answer key: PART VI
PART 7: MCQs from Number 301 – 350                 Answer key: PART VII
PART 8: MCQs from Number 351 – 400                 Answer key: PART VIII
PART 9: MCQs from Number 401 – 450                 Answer key: PART IX
PART 10: MCQs from Number 451 – 500                Answer key: PART X

Continue Practice Exam Test Questions Part VII of the Series

301. The output power of a cellular radio is controlled by the

  • A. user or caller
  • B. cell site
  • C. called party
  • D. MTSO

302. EDGE channel size is about

  • A. 250 kHz
  • B. 200 kHz
  • C. 150 kHz
  • D. 100 kHz

303. A switching facility connecting cellular telephone base stations to each other and to the public switched telephone network.

  • A. MTSO
  • B. MSC
  • C. VLR
  • D. AuC

304. A radio land station in the land mobile service

  • A. land station
  • B. ship earth station
  • C. base station
  • D. mobile station

305. Transmission of brief text messages, such as pages or e-mail, by cellular radio or PCS.

  • A. SMS
  • B. MMS
  • C. paging
  • D. raking

306. 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
  • C. maximum traffic load
  • D. any of these

307. In IS-41 standard, it is a process where the mobile unit notifies a serving MTSO of its presence and location through a base station controller.

  • A. dependent registration
  • B. autonomous registration
  • C. air interface
  • D. BTS to BSC interface

308. Cellular telephones use which operation?

  • A. simplex
  • B. half-duplex
  • C. full-duplex
  • D. triplex

309. A receiver capable of receiving several versions of the same signal with different arrival times and combining the received versions into a single signal with better quality

  • A. scanners
  • B. rake receivers
  • C. mobile subscriber unit
  • D. mobile stations

310. In CMTS, the most important database for GSM is ____.

  • A. VLR
  • B. HLR
  • C. BTS
  • D. AUC

311. In CMTS, the number of duplex voice channels for AMPS is ____.

  • A. 676
  • B. 285
  • C. 395
  • D. 790

312. A geographic cellular radio coverage area containing three of more group of cells

  • A. cluster
  • B. cell
  • C. radio channel
  • D. MSC/VLR area

313. A flawless cell-to-cell transfer is called ____.

  • A. hard handoff
  • B. soft handoff
  • C. heavy handoff
  • D. light handoff

314. The bit length of System Identification (SID)

  • A. 32
  • B. 15
  • C. 10
  • D. 8

315. The RF power output of a transmitter in a cellular mobile telephone system authorized by NTC for use in the Philippines.

  • A. 20.5 dBm
  • B. 31.5 dBm
  • C. 34.8 dBm
  • D. 22.1 dBm

316. A class III mobile phone using AMPS has an ERP of

  • A. 4 W
  • B. 1.6 W
  • C. 600 mW
  • D. 1.4 W

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

  • A. radio monitoring
  • B. radio sounding
  • C. radio survey
  • D. none of these

318. 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

319. When the cluster size is reduced with a constant cell size, what happens to the total channel capacity?

  • A. decreases
  • B. increases
  • C. stays constant
  • D. depends on the number of cell cites

320. The transfer of a mobile unit from one base station's control to another base station's control

  • A. handoff
  • B. paging
  • C. roaming
  • D. dualization

321. What is the frequency deviation of AMPS?

  • A. 12 kHz
  • B. 6 kHz
  • C. 3 kHz
  • D. 18 kHz

322. The bit length of Digital Color Code (DCC)

  • A. 2
  • B. 3
  • C. 4
  • D. 5

323. A transmit channel has a frequency of 837.6 MHz. The receive channel frequency is

  • A. 729.6 MHz
  • B. 837.6 MHz
  • C. 867.6 MHz
  • D. 882.6 MHz

324. 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

325. What is the transmission rate of a GSM cellular system?

  • A. 128 kbps
  • B. 240 kbps
  • C. 64 kbps
  • D. 270 kbps

326. 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

327. It is a means of avoiding full-cell splitting where the entire area would otherwise need to be segmented into smaller cells.

  • A. segmentations
  • B. dualization
  • C. sectoring
  • D. splitting

328. A channel used for transferring control and diagnostic information between mobile users and a central cellular telephone switch through the base stations.

  • A. forward channel
  • B. voice channel
  • C. control channel
  • D. reverse channel

329. It is the provision of voice communication using internet protocol technology, instead of traditional circuit switched technology.

  • A. WAP
  • B. GPRS
  • C. VOIP
  • D. WIFI

330. Determine the total number of channel capacity of a cellular telephone area comprised of 10 clusters with seven cells in each cluster and 10 channels in each cell.

  • A. 7 channels
  • B. 70 channels
  • C. 700 channels
  • D. 7000 channels

331. 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

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

  • A. TACS
  • B. DECT
  • C. Analog cellular
  • D. GSM

333. An information sent by the base station in a cellular radio system set the power level of the mobile transmitter.

  • A. cellular digital packet data
  • B. digital color code
  • C. control mobile attenuation code
  • D. electronic serial code

334. A 32-bit binary code permanently assigned to each of the mobile unit

  • A. supervisory audio tone
  • B. station class mark
  • C. electronic serial number
  • D. visitor location register

335. It serves as central control for all users within that cell

  • A. base stations
  • B. antennas
  • C. transceivers
  • D. mobile subscriber units

336. What modulation technique is used by Advanced Mobile Phone System (AMPS)

  • A. WBFM
  • B. VSB
  • C. NBFM
  • D. FSK

337. A database in the PCS network that stores information about subscribers in a particular MTSO serving area

  • A. international mobile subscriber identification
  • B. visitor location register
  • C. home location register
  • D. authentication register

338. 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

339. A province in the Philippines has an area 2000 sq. kms. It has to be covered by a cellular mobile telephone service using cells with a radius of 3 kms. Assuming hexagonal cells, find the number of cell sites needed.

  • A. 100
  • B. 500
  • C. 166
  • D. 145

340. The modulation technique used by GSM cellular system.

  • A. QAM
  • B. Phase Shift Keying
  • C. Gaussian Minimum Shift Keying
  • D. Frequency Shift Keying

341. Microcells have base stations transmit power between ____.

  • A. 0.4 W to 0.7 W
  • B. 1 W to 6 W
  • C. 0.5 W to 8 W
  • D. 0.1 W to 1 W

342. Determine the receive carrier frequencies for AMPS channel 3 and channel 991

  • A. 870.09 MHz and 869.04 MHz
  • B. 879.09 MHz and 859.04 MHz
  • C. 869.09 MHz and 870.04 MHz
  • D. 869.04 MHz and 870.09 MHz

343. Decreasing co-channel interference while increasing capacity by using directional antenna is called ____.

  • A. clustering
  • B. splitting
  • C. partitioning
  • D. sectoring

344. Soft handoff normally takes ____ of time delay.

  • A. 400 ms
  • B. 300 ms
  • C. 200 ms
  • D. 100 ms

345. Component of a cellular telephone network that manages each of the radio channels at each site.

  • A. base station controllers
  • B. base transceiver stations
  • C. mobile switching center
  • D. mobile telephone switching center

346. The bit length of Station Class Mark (SCM).

  • A. 4
  • B. 5
  • C. 8
  • D. 10

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

  • A. Cell site
  • B. MTSO
  • C. Central office
  • D. Branch office

348. The maximum frequency deviation of an FM cellular transmitter is

  • A. 6 kHz
  • B. 12 kHz
  • C. 30 kHz
  • D. 45 kHz

349. A receiver channel has a frequency is 872.4 MHz. to develop an 82.2 MHz IF, the frequency synthesizer must apply an local oscillator signal of ____ (The local oscillator is usually higher than the receive frequency)

  • A. 790.2 MHz
  • B. 827.4 MHz
  • C. 954.6 MHz
  • D. 967.4 MHz

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

  • A. 6 dBW
  • B. 2 dBW
  • C. -2 dBW
  • D. -6 dBW

Complete List of MCQs in Communications Engineering per topic


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