MCQ in Wire and Wireless Communications System Part 6 | ECE Board

This is the Multiples Choice Questions Part 6 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.

MCQ Topic Outline included in ECE Board Exam Syllabi

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

Continue Practice Exam Test Questions Part 6 of the Series

251. 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

252. The chipping rate of WCDMA (UMTS)

A. 1.25 Mcps

B. 3.6484 Mcps

C. 3.84 Mcps

D. 1.22 Mcps

253. A technique that divides the group of channels into smaller groupings or segments of mutually exclusive frequencies; cell sites, which are within the reuse distance is assigned their own segment of the channel group

A. sectoring

B. dualization

C. partitioning

D. segmentation

254. The actual voice channel where mobile users communicate directly with other mobile or wireline subscriber through the base station

A. control channel

B. forward channel

C. reverse channel

D. voice channel

255. Supervisory Audio Tones(SAT) have the following frequencies except:

A. 5940 Hz

B. 5970 Hz

C. 6000 Hz

D. 6030 Hz

256. Each cell site contains a

A. Repeater

B. Control computer

C. Direct-link to a branch exchange

D. Touch-tone processor

257. A class II mobile phone using AMPS has an ERP of

A. –6 dBW

B. –4 dBW

C. 2 dBW

D. 6 dBW

258. The wideband designation in Wideband-CDMA (WCDMA) denotes a bandwidth of

A. 2.5 MHz

B. 3 MHz

C. 4.5 MHz

D. 5 MHz

259. 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

260. 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

261. How wide is the spectrum bandwidth of a single GSM carrier?

A. 16 kHz

B. 200 kHz

C. 100 kHz

D. 50 kHz

262. Changing the time order of digital information before transmission to reduce the effect of burst errors in the channel.

A. progression

B. interleaving

C. epoch

D. raking

263. The bandwidth of WCDMA is ___ times larger than GSM.

A. 5

B. 15

C. 20

D. 25

264. It is the process in which the same set of frequencies can be allocated to more than one cell, provided that the cells are separated by a sufficient distance

A. frequency reuse

B. handoff

C. clustering

D. radio survey

265. A connection is momentarily broken during the cell-to-cell transfer is called ______.

A. hard handoff

B. soft handoff

C. medium handoff

D. light handoff

266. Transmission from mobile stations to the base stations is called

A. forward link

B. reverse link

C. control link

D. user link

267. It is a database in the PCS network that stores information about the user, including home subscription information and what supplementary services the user is subscribed to.

A. visitor location register

B. home location register

C. equipment identification register

D. authentication register

268. Determine the transmit power for a CDMA mobile unit that is receiving a signal from the base station at 100 dBm

A. 12 dBm

B. 24 dBm

C. 36 dBm

D. 14 dBm

269. When transmitting digital information, voice transmission is inhibited, this is called ______.

A. quieting

B. muting

C. blank-and-burst

D. any of these

270. A metropolitan area of 1000 square km is to be covered by cells with a radius of 2 km. How many cell sites would be required, assuming hexagonal cells?

A. 72

B. 73

C. 74

D. 75

271. Refers to a land station in a maritime mobile services

A. coast station

B. maritime station

C. coast earth station

D. ship earth station

272. Class of orthogonal spreading coded used in CDMA communication.

A. Color code

B. Walsh code

C. PCS code

D. CDMA

273. In a spread spectrum system, the tendency for a stronger signals to interfere with the reception of weaker signals.

A. near-far field

B. near-far effect

C. direct-sequence

D. spread-spectrum

274. Macrocells have base stations transmit power between _____.

A. 3 W to 7 W

B. 1 W to 6 W

C. 2 W to 8 W

D. 0.1 W to 5 W

275. It is when the area of a cell, or independent component coverage areas of a cellular system, is further divided, thus creating more cell areas.

A. cell splitting

B. cell clustering

C. cell partitioning

D. cell sectoring

276. It is when a mobile unit moves from one cell to another from one company’s service area to another company’s service area.

A. roaming

B. handoff

C. handover

D. paging

277. It is a 34-bit binary code that represents the 10-digit telephone number

A. electronic serial number

B. system identification

C. digital color code

D. mobile identification number

278. The bandwidth of WCDMA is __ times larger than CDMAone.

A. 4

B. 5

C. 6

D. 7

279. Receive channel 22 is 870.66 MHz. Receive channel 23 is

A. 870.36 MHz

B. 870.63 MHz

C. 870.96 MHz

D. 870.69 MHz

280. In mobile wireless communication, the radio equipment and the propagation path

A. FSL

B. air interface

C. direct link

D. mobile interface

281. The signaling one may be transmitted on the voice channel during a call in what frequency?

A. 25 kHz

B. 20 kHz

C. 15 kHz

D. 10 kHz

282. Station in the mobile service not intended to be used while in motion.

A. base station

B. fixed station

C. coast station

D. land station

283. In the GSM system, a “smart card” containing all user information, which is inserted into the phone before use.

A. IMSI

B. IMEI

C. IMTS

D. SIM

284. Determine the number of channels per cluster of a cellular telephone area comprised of 10 clusters with seven cells in each cluster and 10 channels in each cell.

A. 70 channels per cluster

B. 700 channels per cluster

C. 7000 channels per cluster

D. 7 channels per cluster

285. Determine the channel capacity if 7 macrocells with 10 channels per cell is split into 4 minicells

A. 120 channels per area

B. 360 channels per area

C. 280 channels per area

D. 460 channels per area

286. 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

287. A base and mobile is separated by 5 km. What is the propagation time for a signal traveling between them?

A. 14.5 µsec

B. 18.9 µsec

C. 20.8 µsec

D. 16.7 µsec

288. A digital identification associated with a cellular system

A. MIN

B. ESN

C. SAT

D. SIM

289. A new regulation issued by the National Telecommunications Commission providing for the guideline for mobile personal communication having a global coverage using satellite.

A. NMT

B. GMPCS

C. GSM

D. TACS

290. The following are the typical cluster size except

A. 3

B. 7

C. 12

D. 15

291. Provides a centralized administration and maintenance point for the entire network end interfaces with the public telephone network through the telephone wireline voice trunks and data links

A. PSTN

B. MTSO

C. central offices

D. MSC

292. It is a digital telephone exchange located in the MTSO that is the heart of a telephone system

A. mobile switching center

B. electronic switching center

C. gateway switching center

D. electronic mobile switching center

293. A database in the PCS network that stores information pertaining to the identification and type of equipment that exist in the mobile unit.

A. visitor location register

B. home location register

C. equipment identification register

D. authentication register

294. When a signal from a mobile cellular unit drops below a certain level, what action occurs?

A. The unit is “handed off” to a closer cell.

B. The call is terminated.

C. The MTSO increases power level.

D. The cell site switches antenna.

295. A method of transmitting data on AMPS cellular telephone voice channels that are temporary unused.

A. cellular digital packet data

B. digital color code

C. control mobile attenuation code

D. electronic serial code

296. A vehicle travels through a cellular system at 100 km per hour. Approximately how often will handoffs occur if the cell radius is 10 km.

A. 12 min

B. 14 min

C. 16 min

D. 18 min

297. In the GSM system, a telephone number that is unique to a given user, worldwide.

A. IMTS

B. IMEI

C. IMSI

D. SIM

298. An area divided into hexagonal shapes that fit together to form a honeycomb pattern is called ______.

A. cluster

B. transport area

C. cell

D. area of responsibility

299. Determine the channel capacity of a cellular telephone area comprised of twelve macrocell with ten channels per cell

A. 12 channels per area

B. 120 channels per area

C. 1200 channels per area

D. 12000 channels per area

300. Transmission from base stations to mobile stations is called ____.

A. forward link

B. reverse link

C. control link

D. user link

Questions and Answers in Wire and Wireless Communications System Series

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

Complete List of MCQ in Communications Engineering per topic