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Computer Networks 0417 IGCSE "4.13 Wi-Fi and Bluetooth"

Authored by Mazen Zakaria

Fun

9th Grade

15 Questions

Used 6+ times

Computer Networks 0417 IGCSE "4.13 Wi-Fi and Bluetooth"
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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the carrier of data transmission for both Wi-Fi and Bluetooth?

  • A. Radio waves

  • B. Electromagnetic radiation

  • C. Infrared radiation

  • D. Ultraviolet radiation

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many frequencies does Bluetooth use?

79

80

81

82

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the frequency that all 79 channels of Bluetooth are centered on?

2.45 GHz

5 GHz

79 GHz

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do devices using Bluetooth avoid interfering with other devices?

By using the same channel as other devices.

By using a different channel from the 79 options.

By using a different frequency band.

By using a different carrier wave.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the technique used by devices using Bluetooth to minimize interference with other devices?

Frequency modulation

Amplitude modulation

Spread-spectrum frequency hopping

Phase modulation

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does Bluetooth use to create a secure wireless personal area network (WPAN)?

Key encryption

Public-key encryption

Symmetric-key encryption

Hashing algorithm

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the maximum distance between two devices for which Bluetooth is useful?

Less than 10 metres

Less than 20 metres

Less than 30 metres

Less than 40 metres

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