Computer Networks

20 Questions | Total Attempts: 269

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Computer Networks

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Questions and Answers
  • 1. 
    What is a Firewall in Computer Network?
    • A. 

      The physical boundary of Network

    • B. 

      A system designed to prevent unauthorized access

    • C. 

      An operating System of Computer Network

    • D. 

      A web browsing Software

  • 2. 
    Computer Network is
    • A. 

      Interconnected by communication channels

    • B. 

      Collection of hardware components and computers

    • C. 

      Sharing of resources and information

    • D. 

      All of the Above

  • 3. 
    The _______ is the physical path over which a message travels.
    • A. 

      Protocol

    • B. 

      Medium

    • C. 

      Signal

    • D. 

      All the above

  • 4. 
    The information to be communicated in a data communications system is the _______.
    • A. 

      Medium

    • B. 

      Protocol

    • C. 

      Message

    • D. 

      Transmission

  • 5. 
    Frequency of failure and network recovery time after a failure are measures of the _______ of a network.
    • A. 

      Performance

    • B. 

      Reliability

    • C. 

      Security

    • D. 

      Feasibility

  • 6. 
    An unauthorized user is a network _______ issue.
    • A. 

      Reliability

    • B. 

      Security

    • C. 

      Performance

    • D. 

      All the above

  • 7. 
    Which topology requires a central controller or hub?
    • A. 

      Mesh

    • B. 

      Bus

    • C. 

      Ring

    • D. 

      Star

  • 8. 
    Which topology requires a multi-point connection?
    • A. 

      Star

    • B. 

      Bus

    • C. 

      Mesh

    • D. 

      Ring

  • 9. 
    Communication between a computer and a keyboard involves ______________ transmission.
    • A. 

      Simplex

    • B. 

      Half-duplex

    • C. 

      Full-duplex

    • D. 

      Automatic

  • 10. 
    A television broadcast is an example of _______ transmission.
    • A. 

      Simplex

    • B. 

      Half-duplex

    • C. 

      Full-duplex

    • D. 

      Automatic

  • 11. 
    A _______ connection provides a dedicated link between two devices.
    • A. 

      Point-to-point

    • B. 

      Multi-point

    • C. 

      Primary

    • D. 

      Secondary

  • 12. 
    In _______ transmission, the channel capacity is shared by both communicating devices at all times.
    • A. 

      Simplex

    • B. 

      Half-simplex

    • C. 

      Full-duplex

    • D. 

      Half-duplex

  • 13. 
    In a _______ connection, more than two devices can share a single link.
    • A. 

      Point-to-point

    • B. 

      Multi-point

    • C. 

      Primary

    • D. 

      Secondary

  • 14. 
    In the original ARPANET, _______ were directly connected together.
    • A. 

      IMPs

    • B. 

      Host computers

    • C. 

      Networks

    • D. 

      Routers

  • 15. 
    This was the first network.
    • A. 

      CSNET

    • B. 

      NSFNET

    • C. 

      ANSNET

    • D. 

      ARPANET

  • 16. 
    Which organization has authority over interstate and international commerce in the communications field?
    • A. 

      ITU-T

    • B. 

      IEEE

    • C. 

      FCC

    • D. 

      ISOC

  • 17. 
    _______ are special-interest groups that quickly test, evaluate, and standardize new technologies.
    • A. 

      Standards organizations

    • B. 

      Regulatory agencies

    • C. 

      All of the above

    • D. 

      Forums

  • 18. 
    Which agency developed standards for physical connection interfaces and electronic signaling specifications?
    • A. 

      EIA

    • B. 

      ITU-T

    • C. 

      ANSI

    • D. 

      ISO

  • 19. 
    _______ is the protocol suite for the current Internet.
    • A. 

      NCP

    • B. 

      TCP/IP

    • C. 

      UNIX

    • D. 

      ACM

  • 20. 
    _______ refers to the structure or format of the data, meaning the order in which they are presented.
    • A. 

      Semantics

    • B. 

      Syntax

    • C. 

      Timing

    • D. 

      All of the above