Mcc Quiz II & III

20 Questions | Total Attempts: 220

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Mcc Quiz II & III


Questions and Answers
  • 1. 
    Fading of the received radio signals in a mobile communication environment occurs because of .....
    • A. 

      Direct propagation

    • B. 

      Multipath Propagation

    • C. 

      Bi-path Propagation

    • D. 

      None of the above

  • 2. 
    1. State whether True of False.i) The cells or subdivisions of a geographical area are always hexagonal.
    ii) A land to Mobile call originates through the Telephone exchange. 
    • A. 

      True, False True, False True, False True, False

    • B. 

      False, True

    • C. 

      False, False

    • D. 

      True, True

  • 3. 
    The basic GSM is based on ____________________ traffic channels
    • A. 

      Connection oriented.

    • B. 

      Connection less.

    • C. 

      Packet switching.

    • D. 

      Circuit switching.

  • 4. 
    ..................... are typically characterized by very small cells, especially in densely populated areas. 
    • A. 

      2G system.

    • B. 

      3G system 3G system. 3G system.

    • C. 

      2.5G system.

    • D. 

      3.5G system.

  • 5. 
    An antenna which attempts to direct all its energy in a particular direction is called as a .............
    • A. 

      Directional Antenna

    • B. 

      One to One Antenna

    • C. 

      Propagation Antenna

    • D. 

      Single Direction Antenna

  • 6. 
    Which mode is used for installing networks in wireless communication device characteristics? 
    • A. 

      Fixed and wired

    • B. 

      Mobile and wired

    • C. 

      Fixed and wired

    • D. 

      Mobile and wireless

  • 7. 
    In wireless LAN, there are many hidden stations so we cannot detect the ____________
    • A. 

      Frames

    • B. 

      Collision

    • C. 

      Signal

    • D. 

      Data

  • 8. 
    Centre excited hexagonal cells use
    • A. 

      Sectored directional antennas

    • B. 

      Omni directional antennas

    • C. 

      Yagi uda antennas

    • D. 

      None of the above

  • 9. 
    The __________________ are installed as an add-on unit with the wireless 
    • A. 

      Access points

    • B. 

      Wireless access interface cards

    • C. 

      Distribution systems

    • D. 

      BSSs

  • 10. 
    The ___________  may be a logic within a wireless terminal that provides access to the DS. 
    • A. 

      Access point

    • B. 

      BSS

    • C. 

      ESS

    • D. 

      Transceiver

  • 11. 
    At any given time, a wireless terminal can be associated with
    • A. 

      Up to seven access points

    • B. 

      Three access points

    • C. 

      Two access points

    • D. 

      one access point only

  • 12. 
    The data transfer time for a fixed size file _______________ in the IEEE 802.11WLAN system operating at 2 Mbps as compared to that of at 1 Mbps.     
    • A. 

      Increases by ten times

    • B. 

      increases by two times

    • C. 

      Decreases by two times

    • D. 

      Decreases by ten times

  • 13. 
    The size of a file transferred in 8 seconds in the IEEE 802.11 WLAN systemoperating at 2 Mbps data transmission rate is 
    • A. 

      2 MB

    • B. 

      4 MB

    • C. 

      16 MB

    • D. 

      32 MB

  • 14. 
    In practical WLAN installation, the radio coverage area of the AP is usually______________ that of the wireless terminal in the same operating environment.      
    • A. 

      larger than

    • B. 

      Identical to

    • C. 

      Smaller than

    • D. 

      Independent to

  • 15. 
    The Wi-Fi technology is specified in
    • A. 

      IEEE 802.11 WLAN standards

    • B. 

      IEEE 802.11a WLAN standards

    • C. 

      IEEE 802.11b WLAN standards

    • D. 

      IEEE 802.11g WLAN standards

  • 16. 
    The radio transmitting equipment at the cell-site operates at ________________RF power than do the mobile equipments. 
    • A. 

      Considerably higher

    • B. 

      Considerably lower

    • C. 

      Almost same

    • D. 

      Either higher or lower

  • 17. 
    Generally __________________________ are used at each cell-site or eachsector of a cell in a cellular system. 
    • A. 

      One Tx antenna and one Rx antenna

    • B. 

      One Tx antenna and two Rx antennas

    • C. 

      Two Tx antennas and one Rx antenna

    • D. 

      Two Tx antennas and two Rx antennas

  • 18. 
    In IEEE 802.11 WLAN standard, the physical layer specifies 2 Mbps data rate. Ifthe baseband modulation used is DSSS, then the carrier modulation scheme is  
    • A. 

      DBPSK

    • B. 

      DQPSK

    • C. 

      2-GFSK

    • D. 

      4-GFSK

  • 19. 
    In a cellular system, the air interface is between __________________. 
    • A. 

      Mobile Subscriber and Cell-Site

    • B. 

      Cell-Site and Mobile Telephone Switching Office

    • C. 

      Two Mobile Telephone Switching Offices

    • D. 

      Mobile Telephone Switching Office and PSTN

  • 20. 
    A set that makes stationary or mobile wireless station and also has optional central base station is known as
    • A. 

      Basic service set

    • B. 

      Extended service set

    • C. 

      Network point set

    • D. 

      Access point

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