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Communication Technology Information Technology - Communication Technology

CBSE - STD 9 - Information Technology (CBSE - English Medium). 74 questions in this chapter.

Question types

Communication Technology question types

74 questions across 7 question groups — pick any mix to generate a Information Technology paper with step-by-step answer keys.

74
Questions
7
Question groups
5
Question types
Sample Questions

Communication Technology questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
What is the unit used to measure the data wf is transmitted through modem?
  • A
    Bytes per second
  • B
    Band
  • ✓
    Bits per second
  • D
    None of these

Answer: C.

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Q 2MCQ1 Mark
Which of the following is not a transmission medium?
  • A
    Telephone lines
  • B
    Co-axial cable
  • ✓
    Modem
  • D
    Microwave system

Answer: C.

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Q 3MCQ1 Mark
A modem is connected in between a telephone line and a
  • A
    computer
  • ✓
    serial port
  • C
    network
  • D
    communication adapter

Answer: B.

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Q 4MCQ1 Mark
Modulation and demodulation is performed by
  • A
    Microwave
  • B
    Satellite
  • ✓
    Modem
  • D
    Fibre optic

Answer: C.

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Q 5MCQ1 Mark
For using Wi-Fi, which of the following is not required?
  • A
    An Internet connection
  • B
    Wireless Internet card
  • C
    Wireless router
  • ✓
    Bluetooth

Answer: D.

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Q 17[1 Mark Questions]1 Mark
Ramya wants to connect all the computers of her office wirelessly in order to avoid clumsy cables. Which wireless technology would be best suitable for her office?
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Q 21[2 Mark Questions]2 Marks
Carefully read the following descriptions and identify what is being talked about.
  1. It consists of two insulated wires twisted around each other, which provides protection against noise and crosstalk.
  2. Disturbance caused due to interference of one signal’s electric or magnetic field into other signals.
  3. It is an omni-directional wireless transmission media. Its range lies between 300 KHz to 10 GHz.
  4. Communication channel that is more secure, faster, easier to set-up but expensive Tor longer distances and devices once configured cannot be moved.
  5. Unique equipments like printers and scanners are available to all the workstations simultaneously.
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Q 22[2 Mark Questions]2 Marks
Ravi has to transfer a photo on his mobile phone to his friend’s phone in the same room. Which of the following technologies would let him to do this quickly?
  • Bluetooth
  • Infrared
  • Either of the two
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Q 23[2 Mark Questions]2 Marks
Mr. Singh and Mr. Tyagi want to send a song from each other. Both having a mobile phone. Both want to send a song through mobile phones. What networking technology is needed to share a song through mobile phone? Describe it.
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Q 24[2 Mark Questions]2 Marks
Manoj has to set-up a network between his devices at home which included a smartphone, a laptop and a personal computer. What type of network he would be setting up for the same?
  • PAN
  • MAN
  • WAN
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Q 27[3 Mark Questions]3 Marks
When we connect computers in a network using cables then it is called guided media. What are the various types of guided media available? Explain each.
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