Understanding Mobile Communications

Understanding Mobile Communications

9th Grade

10 Qs

quiz-placeholder

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Understanding Mobile Communications

Understanding Mobile Communications

Assessment

Quiz

Computers

9th Grade

Practice Problem

Hard

Created by

Afroja Rahman

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the microphone in a mobile phone do?

Converts voice into light pulses

Converts voice into a digital signal

Converts voice into analog signals

Converts voice into electromagnetic waves

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How are zeros and ones transmitted in mobile communications?

By using different temperatures

By using different colors

By using different amplitudes

By using different frequencies

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why can't electromagnetic waves travel long distances?

They are blocked by the Earth's magnetic field

They lose strength due to physical objects and environmental factors

They are too heavy to travel far

They are absorbed by the atmosphere

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of cell towers in mobile communications?

To store subscriber information

To divide geographic areas into hexagonal cells

To convert digital signals into analog signals

To generate electromagnetic waves

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What connects cell towers to provide national or international connectivity?

Optical fiber cables

Radio waves

Copper wires

Satellite links

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of the mobile switching center (MSC)?

To convert analog signals to digital

To help cell towers locate subscribers

To manage frequency slots

To store all mobile phones

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when you move outside the range of your home MSC?

Your phone switches off

You lose all connectivity

You are served by a foreign MSC

You need a new SIM card

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