Practice test

Data communication and networking - Test Set 6

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    Which of the following statements about the half duplex is correct?
    1. It is a type of communication in one direction at a time.
    2. It is a type of communication in one direction.
    3. It is a type of by directional communication at the same time.
    4. None of the above
    View explanation

    Sign In to See Explanations. Sign Up Here

  2. Question 2

    In which of the following modes of data transmission, can the data flow in both directions simultaneously?
    1. Quarter duplex
    2. Half duplex
    3. Simplex
    4. Full duplex
    View explanation

    Sign In to See Explanations. Sign Up Here

  3. Question 3

    Which of the following does not support bidirectional data transmission?
    1. Full duplex
    2. Simplex
    3. Both, half duplex and full duplex
    4. Half duplex
    View explanation

    Sign In to See Explanations. Sign Up Here

  4. Question 4

    Communication between a computer and a keyboard involves ____transmission.
    1. half duplex
    2. automatic
    3. full duplex
    4. Simplex
    View explanation

    Sign In to See Explanations. Sign Up Here

  5. Question 5

    Mobile phone is an example of which type of communication channel?
    1. Half duplex
    2. Simplex
    3. Full duplex
    4. None of these
    View explanation

    Sign In to See Explanations. Sign Up Here

  6. Question 6

    What is the main difference between analog and digital signals?
    1. Analog signals are continuous, while digital signals are discrete.
    2. Both signals are continuous.
    3. Both signals are discrete.
    4. Digital signals are continuous, while analog signals are discrete.
    View explanation

    Sign In to See Explanations. Sign Up Here

  7. Question 7

    Which of the following is an example of an analog signal?
    1. Morse code
    2. Binary code
    3. AM radio waves
    4. MP3 file
    View explanation

    Sign In to See Explanations. Sign Up Here

  8. Question 8

    Which signal type is commonly used in modern computers?
    1. Digital
    2. Analog
    3. Both analog and digital equally
    4. Neither analog nor digital
    View explanation

    Sign In to See Explanations. Sign Up Here

  9. Question 9

    Digital signals are measured in
    1. Decibels (dB)
    2. Hertz (Hz)
    3. Amperes (A)
    4. Bits
    View explanation

    Sign In to See Explanations. Sign Up Here

  10. Question 10

    Which of the following methods is used in unguided transmission media?
    1. Infrared
    2. Optical fibre cable
    3. Coaxial cable
    4. Twisted pair cable
    View explanation

    Sign In to See Explanations. Sign Up Here

  11. Question 11

    What is wireless communication?
    1. Sending data from one location to another without the use of virtual medium
    2. Sending data from one location to another without the use of physical medium
    3. Sending data from one location to another with the use of physical medium
    4. None of the mentioned
    View explanation

    Sign In to See Explanations. Sign Up Here

  12. Question 12

    Which of the following is not an example of wireless communication?
    1. Mobiles
    2. Wi-Fi
    3. Landline
    4. Wireless computer parts
    View explanation

    Sign In to See Explanations. Sign Up Here

  13. Question 13

    Which of the following is not a property of twisted pair cabling?
    1. The wires can be shielded
    2. The wires can be unshielded
    3. Twisted pair cabling is a relatively low speed transmission
    4. Twisted pair cable carries signals as light waves
    View explanation

    Sign In to See Explanations. Sign Up Here

  14. Question 14

    In twisted pair, wires are twisted together, which are surrounded by an insulating material and an outer layer called
    1. jacket
    2. disk
    3. box
    4. frame
    View explanation

    Sign In to See Explanations. Sign Up Here

  15. Question 15

    Which of the following is the greatest advantage of co-axial cabling?
    1. Physical dimensions
    2. Easily tapped
    3. Long distances
    4. High security
    View explanation

    Sign In to See Explanations. Sign Up Here

  16. Question 16

    Which of the following cables can transmit data at high speeds?
    1. Flat cable
    2. Optic fibre cable
    3. Twisted pair cable
    4. Co-axial cable
    View explanation

    Sign In to See Explanations. Sign Up Here

  17. Question 17

    Which of the following is an advantage for using fibre optics data transmission?
    1. Fast data transmission rate
    2. Low noise level
    3. Resistance to data theft
    4. All of the above
    View explanation

    Sign In to See Explanations. Sign Up Here

  18. Question 18

    Networking using fibre optic cable is done as
    1. it is not affected by electro magnetic interference/power surges etc.
    2. it is thin and light.
    3. it has high bandwidth.
    4. All of the above
    View explanation

    Sign In to See Explanations. Sign Up Here

  19. Question 19

    Which of the following is not a property of fibre optic cabling?
    1. Carries signals as light waves
    2. Easier to capture a signal from the copper cabling
    3. Very resistant to interference
    4. Transmits at faster speeds than copper cabling
    View explanation

    Sign In to See Explanations. Sign Up Here

  20. Question 20

    A device that connects to a network without the use of cables is said to be
    1. cabled
    2. centralised
    3. distributed
    4. wireless
    View explanation

    Sign In to See Explanations. Sign Up Here