Communications Reviewer 1 Multiple Choice

51 Questions | Total Attempts: 198

SettingsSettingsSettings
Please wait...
Communication Quizzes & Trivia

Questions and Answers
  • 1. 
    It is the scientist who is engaged in the study in the field of acoustics
    • A. 

      Acoustician

    • B. 

      Acoustist

    • C. 

      Acoustics Engineer

    • D. 

      Acoustics Scientist

  • 2. 
    Who coined the term "cyberspace?"
    • A. 

      William Gibson

    • B. 

      Antonio Meucci

    • C. 

      Mel Gibson

    • D. 

      Antonio Banderas

  • 3. 
    For educational purposes, who is the person who first discovered/invented the telephone?
    • A. 

      Antonio Meucci

    • B. 

      William Gibson

    • C. 

      Antonio Banderas

    • D. 

      Mel Gibson

  • 4. 
    What is the frequency of the middle C?
    • A. 

      262 Hz

    • B. 

      363 Hz

    • C. 

      633 Hz

    • D. 

      622 Hz

  • 5. 
    What is the frequency of the upper side/ above middle C?
    • A. 

      524 Hz

    • B. 

      534 Hz

    • C. 

      544 Hz

    • D. 

      554 Hz

  • 6. 
    It is the loudness level (in PHON) of a watch ticking.
    • A. 

      20 PHON

    • B. 

      30 PHON

    • C. 

      40 PHON

    • D. 

      50 PHON

  • 7. 
    What is the maximum limit time of exposure on sound levels between 100 dB and 110 dB?
    • A. 

      20 minutes

    • B. 

      22 minutes

    • C. 

      24 minutes

    • D. 

      26 minutes

  • 8. 
    What is the colloquial name for the term "Thin Ethernet"?
    • A. 

      Cheapernet

    • B. 

      Cheapnet

    • C. 

      Choppednet

    • D. 

      Thinet

  • 9. 
    Local Multipoint Distribution Service (LMDS) operates at what frequency range?
    • A. 

      27 - 31 GHz

    • B. 

      31 - 35 GHz

    • C. 

      35 - 39 GHz

    • D. 

      39 - 41 GHz

  • 10. 
    A video signal that has no sync signal is what you called
    • A. 

      Non-composite Video Signal

    • B. 

      Composite Video Signal

    • C. 

      Non Video Signal

    • D. 

      None of the choices

  • 11. 
    It is the gas that is used in jet engines.
    • A. 

      Hydrazine

    • B. 

      Dryhazine

    • C. 

      Hitrazine

    • D. 

      Monozine

  • 12. 
    A satellite is put into final geosynchronous orbit from its transfer orbit by firing the __________.
    • A. 

      Apogee kick motor

    • B. 

      Perigee kick motor

    • C. 

      Apogee punch motor

    • D. 

      Perigee punch motor

  • 13. 
    A terrestrial communications channel linking an earth station to a local switching network or population center
    • A. 

      Backhaul

    • B. 

      Fronthaul

    • C. 

      SideHaul

    • D. 

      TopHaul

  • 14. 
    Polytetrafluoroethylene is also known as
    • A. 

      Teflon

    • B. 

      Micah

    • C. 

      Glass

    • D. 

      Tissue

  • 15. 
    For SSB transmitter, the average power is typically __________ of the peak envelope power, with a typical human speech
    • A. 

      1/4 to 1/3

    • B. 

      1/5 to 1/4

    • C. 

      1/3 to 1/2

    • D. 

      1/8 to 1/5

  • 16. 
    It is often called text messaging, is a means of sending short messages to and from mobile phones.
    • A. 

      The Short Message Service (SMS)

    • B. 

      The Long Message Service (LMS)

    • C. 

      The Multimedia Message Service (MMS)

    • D. 

      None of the choices

  • 17. 
    North American type of sound files as a substitute for MP3
    • A. 

      AC-3 Dolby

    • B. 

      AC-4 Dolby

    • C. 

      AC-5 Dolby

    • D. 

      AC-2 Dolby

  • 18. 
    A table showing the pre-calculated position of satellite at any given time
    • A. 

      Ephemeris

    • B. 

      Edomeris

    • C. 

      Both of the choices

    • D. 

      None of the choices

  • 19. 
    How many Horizontal scanning lines are there in HDTV?
    • A. 

      1125

    • B. 

      562.5

    • C. 

      1200

    • D. 

      281.25

  • 20. 
    How long that a GPS satellite completes its orbit?
    • A. 

      12 hrs

    • B. 

      6 hrs

    • C. 

      24 hrs

    • D. 

      18 hrs

  • 21. 
    What is the other term for parity check?
    • A. 

      Vertical Redundancy Check

    • B. 

      Horizontal Redundancy Check

    • C. 

      Vertical Check

    • D. 

      Horizontal Check

  • 22. 
    What is the other name for single button microphone?
    • A. 

      Carbon Button

    • B. 

      Mono Phone

    • C. 

      Buttonphone

    • D. 

      Micro Button

  • 23. 
    Instrument that is used in measuring the virtual height of ionosphere
    • A. 

      Ionosonde

    • B. 

      Isocone

    • C. 

      Ionicode

    • D. 

      Virtual Ion

  • 24. 
    An instrument used to measure relative height, layers in the ionosphere regarding wave propagation?
    • A. 

      Ionosonde

    • B. 

      Isocone

    • C. 

      Ionicode

    • D. 

      Virtual Ion

  • 25. 
    In a trapezoid modulation, 100% modulation will result to what waveform?
    • A. 

      Triangular waveform

    • B. 

      Square waveform

    • C. 

      Sine waveform

    • D. 

      Sawtooth waveform

Back to Top Back to top