Question # 1

A computer or device that sends a message is called.

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Receiver

Sender

Encoders

Transmission media

By------------ there are expected to be 41 billion LOT devices.

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2023

2025

2027

2029

A ---------- is the data to be sent.

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Sender

Message

Receiver

None of these

In the ........... network , computers are not physically connected.

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WAN

LAN

MAN

None of these

------- is the unit of frequency.

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Meter

Hertz

Joule

None of these

It is also known as wirless transmission.

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Guided media

Unguided media

Both of above

None of these

The network with a small geographical area is called.

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LAN

WAN

MAN

All of these

Bluetooth is anothe rimportant...... range wireless communication system.

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Low

Mid

High

Side

The electromagnetic ways that travel through open space in all direction is called.

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Micro waves

Radio waves

Infrared waves

All of these

The-------------- spectrum has frquencies between 300 GHz and 400 THz.

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Infrared

Radio waves

Micro waves

None of these

------------- is a secured connection over the internet.

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LAN

WAN

VPN

None of these

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8th Computer Science Chapter 2 Test MCQs With Answers

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