Learn Everything About Network Sensors

22 Questions | Total Attempts: 695

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Network Quizzes & Trivia

A sensor network is a group of sensors where each sensor monitors data in a different location and sends that data to a central location for storage, viewing, and analysis. Learn Everything about Network Sensors in this quiz!


Questions and Answers
  • 1. 
    Sensor Network is
    • A. 

      Heterogeneous system consisting of tiny sensors.

    • B. 

      Homogeneous system used in wireless.

    • C. 

      Very important for security.

    • D. 

      All Above.

  • 2. 
    Challenges in wireless sensor networks are
    • A. 

      Big physical size.

    • B. 

      Node mobility.

    • C. 

      Self-configuring.

    • D. 

      Both b and c.

  • 3. 
    Devices may be “always on” or “low duty cycle” in
    • A. 

      WiMAX and WCDMA.

    • B. 

      HSDPA and HSUPA.

    • C. 

      Wireless sensors and Body area networks.

    • D. 

      All above

  • 4. 
    Grid’s Location Service (GLS) uses
    • A. 

      Centralized location servers.

    • B. 

      Distributed location servers.

    • C. 

      Hybrid location servers.

    • D. 

      All above.

  • 5. 
    RF signal strength is used
    • A. 

      To check type of network.

    • B. 

      To measure distance.

    • C. 

      To check whether network is wireless or wired.

    • D. 

      None of all.

  • 6. 
    Ideal positioning technique is
    • A. 

      By measurement of distance.

    • B. 

      By checking signal strength.

    • C. 

      By Trilateration.

    • D. 

      All above.

  • 7. 
    WSN opportunities are in
    • A. 

      IC design.

    • B. 

      Elderly care.

    • C. 

      Oil gas industry.

    • D. 

      All above.

  • 8. 
    Jamming is the attack of
    • A. 

      IP layer.

    • B. 

      TCP layer.

    • C. 

      Physical layer.

    • D. 

      All above.

  • 9. 
    Probing and Redundancy are defenses at
    • A. 

      Application layer.

    • B. 

      Network layer.

    • C. 

      Data link layer.

    • D. 

      None of all.

  • 10. 
    Flooding attack at transport layer is defended by
    • A. 

      Limiting number of connections.

    • B. 

      Stopping the clients.

    • C. 

      Authenticating all messages.

    • D. 

      All above.

  • 11. 
    Some security threat in WSNs are
    • A. 

      Insertion of malicious code.

    • B. 

      Interception of messages.

    • C. 

      Injection of false data.

    • D. 

      All above.

  • 12. 
    Routing security in wireless sensor networks faces the problem that
    • A. 

      Current routing protocols for wireless sensor networks do not consider security.

    • B. 

      Routing in wireless sensor networks is very fast.

    • C. 

      No routing has been implemented.

    • D. 

      All above.

  • 13. 
    Some routing related attacks are
    • A. 

      Selective forwarding.

    • B. 

      Sinkhole.

    • C. 

      Viruses.

    • D. 

      Both a and b.

  • 14. 
    Grid’s Location Service (GLS) uses
    • A. 

      Centralized location servers.

    • B. 

      Distributed location servers

    • C. 

      Hybrid location servers.

    • D. 

      All above.

  • 15. 
    Hello Flooding attack at transport layer (in WSN) is defended by
    • A. 

      Limiting number of connections.

    • B. 

      Stopping (de-activated) the sensors.

    • C. 

      Authenticating all messages.

    • D. 

      All above.

  • 16. 
    A Sybil node in WSN is defined as
    • A. 

      A node that receives packets at one point in the network, tunnels them through a less latency link than the network links to another point in the network and replay packets there locally

    • B. 

      A node that attract nearly all the traffic from a particular area through a compromised node

    • C. 

      A malicious or subverted node forges the identities of more than one node or fabricates identity

    • D. 

      None of the above

  • 17. 
    A sensor is mainly composed of microcontroller, battery and _____________?
    • A. 

      Transponder

    • B. 

      Antenna

    • C. 

      Modem

    • D. 

      Multiplexer.

  • 18. 
    Routing security in wireless sensor networks faces the problem that
    • A. 

      Current routing protocols for wireless sensor networks do not consider security.

    • B. 

      Routing in wireless sensor networks is very fast.

    • C. 

      No routing has been implemented.

    • D. 

      All above.

  • 19. 
    A sensor is mainly composed of microcontroller, antenna and _____________?
    • A. 

      Transponder

    • B. 

      Battery

    • C. 

      Modem

    • D. 

      Multiplexer.

  • 20. 
    GPS devices can work during daylight and night hours.
    • A. 

      Big physical size.

    • B. 

      Node mobility.

    • C. 

      Self-configuring.

    • D. 

      Both b and c.

  • 21. 
    WSN opportunities are in?
    • A. 

      IC design.

    • B. 

      Elderly care.

    • C. 

      Oil gas industry.

    • D. 

      All above.

  • 22. 
    A sinkhole node in WSN is defined as
    • A. 

      A node that receives packets at one point in the network, tunnels them through a less latency link than the network links to another point in the network and replay packets there locally

    • B. 

      A node that attract nearly all the traffic from a particular area through a compromised node

    • C. 

      A malicious or subverted node forges the identities of more than one node or fabricates identity

    • D. 

      None of the above

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