3D152 Volume 2 UREs

93 Questions | Total Attempts: 328

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3D152 Volume 2 UREs

3D152 Volume 2 UREs


Questions and Answers
  • 1. 
    What happens when more bits are added to a digital signal arranged in a sequence understood by the sender and receiver?
    • A. 

      A code set is established.

    • B. 

      A word is created.

    • C. 

      An octet is formed.

    • D. 

      Nothing.

  • 2. 
    How many possible symbols can 4 bits represent?
    • A. 

      2.

    • B. 

      4.

    • C. 

      8.

    • D. 

      16.

  • 3. 
    In networking, a byte is identified as a/an
    • A. 

      Bit.

    • B. 

      Word.

    • C. 

      Octet.

    • D. 

      Letter.

  • 4. 
    What organization sets important computer networking wiring standards for residential and commercial network cabling?
    • A. 

      Electronic Industries Alliance (EIA).

    • B. 

      Telecommunications Industry Association (TIA).

    • C. 

      The American National Standards Institute (ANSI).

    • D. 

      The National Institute of Standards and Technology (NIST).

  • 5. 
    What Electronic Industries Alliance (EIA)/Telecommunications Industry Association (TIA) standard is used for commercially building telecommunications cabling?
    • A. 

      568A.

    • B. 

      569A.

    • C. 

      570A.

    • D. 

      606A.

  • 6. 
    Which of the following is an International Telecommunication Union (ITU) standardized format used for digital telecommunications services backbone system?
    • A. 

      E-carrier.

    • B. 

      Structured query language.

    • C. 

      International Organization for Standardization.

    • D. 

      American Standard Code for Information Interchange.

  • 7. 
    There is a worldwide nonprofit association of technical professionals that promotes the development of standards called the
    • A. 

      Internet Engineering Task Force (IETF).

    • B. 

      Institute of Electrical and Electronics Engineers (IEEE).

    • C. 

      European Telecommunications Standards Institute (ETSI).

    • D. 

      Internet Corporation for Assigned Names and Numbers (ICANN).

  • 8. 
    A collection of standards for local area network (LAN) architectures, protocols, and technologies called Project 802 were developed by the
    • A. 

      Internet Engineering Task Force (IETF).

    • B. 

      Institute of Electrical and Electronics Engineers (IEEE).

    • C. 

      European Telecommunications Standards Institute (ETSI).

    • D. 

      Internet Corporation for Assigned Names and Numbers (ICANN).

  • 9. 
    The “parent” organization, headquartered in Geneva, Switzerland, for all other telecommunications organizations is the
    • A. 

      Internet Engineering Task Force (IETF).

    • B. 

      International Telecommunication Union (ITU).

    • C. 

      Institute of Electrical and Electronics Engineers (IEEE).

    • D. 

      International Telegraph and Telephone Consultative Committee (CCITT).

  • 10. 
    What organization is responsible for the X-series and V-series standards?
    • A. 

      Internet Engineering Task Force (IETF).

    • B. 

      International Telecommunication Union (ITU).

    • C. 

      Institute of Electrical and Electronics Engineers (IEEE).

    • D. 

      International Telecommunication Union Telecommunications Standardization Sector (ITU-T).

  • 11. 
    Which series of standards are recommended for data transmission using the telephone network?
    • A. 

      T.

    • B. 

      V.

    • C. 

      X.

    • D. 

      Z.

  • 12. 
    The definition of the Open System Interconnect (OSI) reference model was a major contribution to networking made by the
    • A. 

      Internet Engineering Task Force (IETF).

    • B. 

      International Telecommunication Union (ITU).

    • C. 

      International Organization for Standardization (ISO).

    • D. 

      Institute of Electrical and Electronics Engineers (IEEE).

  • 13. 
    Within how many feet of the data communications equipment (DCE) connection does the Electronics Industries Alliance (EIA) RS–232–C standard prescribes bipolar-voltage serial data transmission?
    • A. 

      25.

    • B. 

      50.

    • C. 

      100.

    • D. 

      200.

  • 14. 
    Which Electronics Industries Alliance (EIA) interface standard has the ability to work in either balanced or unbalanced electrical circuits?
    • A. 

      RS–232–C.

    • B. 

      RS–423.

    • C. 

      RS–485.

    • D. 

      RS–530.

  • 15. 
    What transmission rates does Electronic Industries Alliance (EIA) RS–530 accommodate?
    • A. 

      20 kilobits per second (Kbps) to 200 Kbps.

    • B. 

      20 Kbps to 2 megabits per second (Mbps).

    • C. 

      20 Kbps to 20 Mbps.

    • D. 

      20 Kbps to 22 Mbps.

  • 16. 
    What two sublayers did the Institute of Electrical and Electronics Engineers (IEEE) divide the Open System Interconnect (OSI) data link layers into?
    • A. 

      High Level Data Link Control (HDLC) and Synchronous Data Link Control (SDLC).

    • B. 

      Logical Link Control (LLC) and Media Access Control (MAC).

    • C. 

      Data communications equipment (DCE) and data terminal equipment (DTE).

    • D. 

      Electronic Industries Alliance (EIA) RS–232 and RS–530.

  • 17. 
    At what Open System Interconnect (OSI) layer are common data compression and encryption schemes used?
    • A. 

      Application.

    • B. 

      Session.

    • C. 

      Presentation.

    • D. 

      Transport.

  • 18. 
    What Open System Interconnect (OSI) layer is closest to the end user?
    • A. 

      Application.

    • B. 

      Session.

    • C. 

      Presentation.

    • D. 

      Transport.

  • 19. 
    In the Open System Interconnect (OSI) model, a layer will communicate with three other OSI layers. Which one is not one of those layers?
    • A. 

      Layer above.

    • B. 

      Layer below.

    • C. 

      Lowest layer.

    • D. 

      Peer layer.

  • 20. 
    Which information unit, whose source and destination are network-layer entities, uses connectionless network service?
    • A. 

      Frame.

    • B. 

      Packet.

    • C. 

      Segment.

    • D. 

      Datagram.

  • 21. 
    What data communication protocol is used to govern the flow and format of information between systems?
    • A. 

      Character-oriented.

    • B. 

      Bit-oriented.

    • C. 

      Routing.

    • D. 

      Network.

  • 22. 
    In binary-synchronous protocol, what character is used to establish and maintain character synchronization prior to the message block and during transmission?
    • A. 

      SEQ.

    • B. 

      SYN.

    • C. 

      STX.

    • D. 

      EST.

  • 23. 
    What data communication protocol is based on bits and the position of the bits?
    • A. 

      Character-oriented.

    • B. 

      Bit-oriented.

    • C. 

      Routing.

    • D. 

      Network.

  • 24. 
    What data communication protocol ensures that the receiving station can distinguish information from garbage?
    • A. 

      Asynchronous protocol.

    • B. 

      Binary synchronous protocol.

    • C. 

      Synchronous Data Link Control (SDLC).

    • D. 

      High-Level Data Link Control (HDLC).

  • 25. 
    A group of computers and associated devices that share a common communications line within a small geographic area is a
    • A. 

      Metropolitan area network (MAN).

    • B. 

      Local area network (LAN).

    • C. 

      Wide area network (WAN).

    • D. 

      Virtual private network (VPN).