[Chapter 8 Quiz] Comp 20173 Data Communication And Networking

10 Questions | Total Attempts: 132

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Data Communication Quizzes & Trivia

Chapter 8: OSI Physical Layer


Questions and Answers
  • 1. 
    What is the purpose of encoding?
    • A. 

      To identify the start and stop bits in a frame

    • B. 

      To denote the physical layer’s connectors of computers in relation to the way they connect to network media

    • C. 

      To control the way frames are placed on the media at the data link layer

    • D. 

      To represent the data bits by using different voltages, light patterns, or electromagnetic waves as they are placed onto the physical media

  • 2. 
    What best describes the purpose of the physical layer?
    • A. 

      Ensures reliable transmission of data across a physical link

    • B. 

      Determines connectivity and path selection between two end systems

    • C. 

      Establishes the physical addressing, networking topology, and media access

    • D. 

      Defines the functional specifications for links between end systems and the electrical, optical, and radio signals

  • 3. 
    Through what process does UTP cable help to avoid crosstalk?
    • A. 

      Shielding of cable

    • B. 

      Twisting of pairs

    • C. 

      Grounding the endpoints

    • D. 

      Cladding in cable

  • 4. 
    What is the purpose of cladding in fiber-optic cables?
    • A. 

      Cable grounding

    • B. 

      Noise cancellation

    • C. 

      Prevention of light loss

    • D. 

      EMI protection

  • 5. 
    Which of the following measures the actual data transfer rate over a medium?
    • A. 

      Bandwidth

    • B. 

      Throughput

    • C. 

      Goodput

    • D. 

      None of these

  • 6. 
    It is a configuration type of twisted pair cable that is used in local area networks to connect a computer to a network hub such as router.
    • A. 

      Straight-Through

    • B. 

      Crossover

    • C. 

      Rollover

    • D. 

      Option 4

  • 7. 
    How many wires do twisted pair cable with RJ45 adapter have?
    • A. 

      4 wires

    • B. 

      8 wires

    • C. 

      6 wires

    • D. 

      10 wires

  • 8. 
    The gigabit ethernet has a speed of 1 Gbps. What is the equivalent of 1Gbps in Mbps?
    • A. 

      1 Mbps

    • B. 

      10 Mbps

    • C. 

      100 Mbps

    • D. 

      None of these

  • 9. 
    It is a type of Ethernet cable used to connect computing devices together directly. It is most often used to connect two devices of the same type: e.g. two computers (via network interface controller) or two switches to each other
    • A. 

      Straight-Through

    • B. 

      Crossover

    • C. 

      Rollover

    • D. 

      None of these

  • 10. 
    In gaming or real time application, a low bandwidth network will:
    • A. 

      Not affect the application at all

    • B. 

      Make the game or the application to load slower

    • C. 

      Make the game or the application to load faster

    • D. 

      Option 4

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