MCQs in Communications Engineering Part 9

Compiled Miscellaneous Multiple Choice Questions in Communications Engineering Part 9 of the series. Familiarize each and every questions compiled here in Preparation for the ECE Board Exam

MCQs in Communications Engineering

This is the Miscellaneous Multiples Choice Questions Part 9 of the Series in Communications Engineering. 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 past Board Questions in Communications Engineering field (Electronics Systems and Technologies). In the actual board, you have to answer 100 items in Electronic Systems and Technologies within 5 hours. You have to get at least 70% to pass the subject. Electronic Systems and Technologies is 30% of the total 100% Board Rating along with Mathematics (20%), General Engineering and Applied Sciences (20%) and Electronics Engineering (30%).

The Series

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

Miscellaneous Communications Engineering 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 with Part IX of the Series

Choose the letter of the best answer in each questions.

401. It is the provision of voice communication using Internet Protocol (IP) technology, instead of traditional circuit switched technology

  • A. VOIP
  • B. Bluetooth
  • C. WIFI
  • D. WIMAX

402. Bluetooth enabled electronic devices connect and communicate wirelessly through short-range, ad hoc networks known as _____.

  • A. nanonet
  • B. scatternet
  • C. piconet
  • D. netnet

403. Each device can simultaneously communicate with up to ______ other devices with a single piconet.

  • A. 8
  • B. 5
  • C. 10
  • D. 7

404. The core specification version of Bluetooth that uses Enhanced Data Rate (EDR)

  • A. Version 1.0
  • B. Version 2.0
  • C. Version 1.2
  • D. Version 2.1

405. Bluetooth technology operates in the _____ band.

  • A. ISM
  • B. C band
  • C. MSI
  • D. Ku band

406. Bluetooth technology operates in the band

  • A. 2.4 to 2.485 GHz
  • B. 2.42 to 2.44 GHz
  • C. 2.48 to 2.52 GHz
  • D. 2.3 to 2.45 GHz

407. The hopping rate of Bluetooth is

  • A. 1000 hops/sec
  • B. 1600 hops/sec
  • C. 1500 hops/sec
  • D. 2500 hops/sec

408. Technology used by Bluetooth designed to reduce interference between wireless technologies sharing the 2.4 GHz spectrum

  • A. AFH
  • B. DSSS
  • C. OFDM
  • D. FHSS

409. The signal hops among ______ frequencies at 1 MHz intervals to give a high degree of interference immunity

  • A. 80
  • B. 78
  • C. 81
  • D. 79

410. Class 3 radios used for Bluetooth technology have a range of up to

  • A. 1 ft
  • B. 2 ft
  • C. 3 ft
  • D. 4 ft

411. Class 2 radios used for Bluetooth most commonly found in mobile devices have a range of ______.

  • A. 10 ft
  • B. 20 ft
  • C. 15 ft
  • D. 30 ft

412. Class 1 radios used primarily in industrial use cases have a range of

  • A. 100 meters
  • B. 25 meters
  • C. 10 meters
  • D. 50 meters

13. Bluetooth technology uses ______ of power.

  • A. 2.6 mW
  • B. 2.5 mW
  • C. 2,8 mW
  • D. 2.7 mW

414. What is the data rate used by Bluetooth technology using version 1.2 specification?

  • A. 1 Mbps
  • B. 2 Mbps
  • C. 3 Mbps
  • D. 4 Mbps

415. What is the data rate used by Bluetooth technology using version 2.0 + EDR specification?

  • A. 1 Mbps
  • B. 3 Mbps
  • C. 2 Mbps
  • D. 4 Mbps

416. Bluetooth technology has built-in security such as _____ bit encryption

  • A. 64
  • B. 16
  • C. 32
  • D. 128

417. The symbol rate for Bluetooth is

  • A. 1 Mega symbol per sec
  • B. 3 Mega symbol per sec
  • C. 2 Mega symbol per sec
  • D. 4 Mega symbol per sec

418. In satellite communications, for an angle of inclination 0f 63.4 degrees, the rotation of the line-of-apsides is ____ degrees

  • A. 0
  • B. 5
  • C. 15
  • D. 3

419. An international agreement initially mandated that all satellites placed in the Clarke or Geosynchronous orbit must be separated by at least

  • A. 22,300 mi
  • B. 3400 mi
  • C. 1833 mi
  • D. 5544 mi

420. The radiation pattern of earth coverage antennas of satellites have a beamwidth of approximately ______.

  • A. 15 degrees
  • B. 17 degrees
  • C. 10 degrees
  • D. 11 degrees

421. ______ is a new nonvoice value added service that allows information to be sent and received across a mobile telephone network.

  • A. WiFi
  • B. Wimax
  • C. GPRS
  • D. HSCSD

422. Theoretical maximum speeds of up to _____ kbps are achievable with GPRS using all _____ timeslots at the same time.

  • A. 64, 8
  • B. 171.2, 8
  • C. 128, 7
  • D. 183.5, 7

423. It is the latest standard of MPEG under development that will support download and execution of multimedia applications.

  • A. MPEG-21
  • B. MPEG-A
  • C. MPEG-7
  • D. MPEG-E

424. A new standard line of MPEG standard called multimedia application format is _____.

  • A. MPEG-A
  • B. MPEG-C
  • C. MPEG-B
  • D. MPEG-D

425. MPEG standard on which such products as Digital Television set top boxes and DVD are based

  • A. MPEG-1
  • B. MPEG-4
  • C. MPEG-2
  • D. MPEG-7

426. MPEG standard on which such products as Video CD and MP3 are based

  • A. MPEG-1
  • B. MPEG-7
  • C. MPEG-21
  • D. MPEG-3

427. MPEG standard for multimedia for the fixed and mobile web

  • A. MPEG-1
  • B. MPEG-4
  • C. MPEG-2
  • D. MPEG-7

428. MPEG standard for description and search of audio and visual content.

  • A. MPEG-1
  • B. MPEG-7
  • C. MPEG-21
  • D. MPEG-3

429. The MPEG standard for the Multimedia Framework

  • A. M3W
  • B. MPEG-4
  • C. MPEG-7
  • D. MPEG-21

430. Coding of moving pictures and associated audio for digital storage media at up to about 1.5 Mbps.

  • A. MPEG-3
  • B. MPEG-2
  • C. MPEG-4
  • D. MPEG-1

431. Used in MPEG to remove spatial correlation.

  • A. Discrete Shine Transform
  • B. Discreet Cosine Transform
  • C. Discreet Secant Transform
  • D. Discreet Cosecant Transform

432. MPEG-4 builds on the proven success on one of the following fields

  • A. Digital television
  • B. Interactive multimedia
  • C. Interactive graphics applications
  • D. Any of these

433. The maximum effective power allowed for RFID is _____.

  • A. 0.5 watt
  • B. 3 watts
  • C. 1 watt
  • D. 0.25 watt

434. The use and operation of RFIDs shall be allowed in the following frequency bands except:

  • A. 13.533 - 13.567 MHz
  • B. 2446 - 2454 MHz
  • C. 918 - 920 MHz
  • D. 254 - 365 MHz

435. _____ are radio systems based on local area networking solutions that require higher data rates and consequently greater bandwidth for new multimedia applications spectrum requirements

  • A. WIFI
  • B. HiperLAN
  • C. WIMAX
  • D. VOIP

436. _____ refers to the determination of the position, velocity and/or other characteristics of an object, or the obtaining of information relating to these parameters, by means of the propagation properties of radio waves.

  • A. position determination
  • B. radio determination
  • C. velocity determination
  • D. range determination

437. Radio microphones has power of _____ mW or less.

  • A. 20
  • B. 40
  • C. 30
  • D. 50

438. _____ referred to as wireless microphones or cordless microphones, are small, low power, unidirectional transmitters designed to be worn on the body, or hand held, for the transmission of sound over short distances for personal use.

  • A. directional microphone
  • B. parabolic microphone
  • C. radio microphone
  • D. spy microphone

439. _____ are intended to carry data in suitable transporters, generally known as tags, and to retrieve data, by hand- or manine-readable means, at a suitable time and place to satisfy particular application needs.

  • A. RFID
  • B. HiperLan
  • C. transponder tags
  • D. bluetooth

440. _____ also referred to as dedicated short-range communications for transport information and control systems are systems providing data communication between two or more road vehicles and between road vehicles and the road infrastructure for various information-based travel and transport applications, including automatic toll-collection, route and parking guidance, collision avoidance and similar applications.

  • A. RTTY
  • B. TICS
  • C. RTTT
  • D. RSSD

441. _____ for use with implanted medical devices, like pacemakers, implantable defibrillators, nerve stimulators, and other types of implanted devices.

  • A. MICS
  • B. TICS
  • C. AIDS
  • D. PACER

442. What is the frequency band for biomedical devices?

  • A. 40.66 - 40.70 MHz
  • B. 13.90 - 14.40 MHz
  • C. 50.44 - 51.09 MHz
  • D. 32.10 - 33.89 MHz

443. The electric field intensity of biomedical devices?

  • A. 1000 µV/m at 3m
  • B. 10 µV/m at 3m
  • C. 100 µV/m at 3m
  • D. 1 µV/m at 3m

444. _____ refers to the use of radio communication devices for the transmission of signals to initiate, modify or terminate functions of equipment at a distance.

  • A. telemetry
  • B. wireless application
  • C. telecommand
  • D. radio beacon

445. The data rate used by IEEE 802.11b

  • A. 11 Mbps
  • B. 55 Mbps
  • C. 54 Mbps
  • D. 12 Mbps

446. The operating frequency of IEEE 802.11b

  • A. 2.4 GHz
  • B. 5.5 GHz
  • C. 5 GHz
  • D. 2.5 GHz

447. The operating frequency of IEEE 802.11a

  • A. 2.5 GHz
  • B. 5 GHz
  • C. 5.5 GHz
  • D. 2.1 GHz

448. The data rate of IEEE 802.11a

  • A. 55 Mbps
  • B. 53 Mbps
  • C. 54 Mbps
  • D. 50 Mbps

449. _____ is a standards-based wireless technology that provides high-throughput broadband connections over long distances.

  • A. Wimax
  • B. Wibro
  • C. Wifi
  • D. Winar

450. _____ is a wireless broadband technology being developed by the Korean telecoms industry.

  • A. Wimax
  • B. Wibro
  • C. Wifi
  • D. Winar

Complete List of MCQs in Communications Engineering per topic


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