IGCSE CS - Unit 1

IGCSE CS - Unit 1

9th Grade

41 Qs

quiz-placeholder

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IGCSE CS - Unit 1

IGCSE CS - Unit 1

Assessment

Quiz

Computers

9th Grade

Practice Problem

Medium

Created by

Louise Russell

Used 3+ times

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41 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why do computers use binary to represent data?

Because it is easier for humans to understand
Because it is the only system that can represent all forms of data
Because it is the most efficient system for processing
Because it is the oldest number system

Answer explanation

Jupiter is a gas giant made primarily of hydrogen and helium. Unlike terrestrial planets that have solid surfaces, gas giants like Jupiter don't have a well-defined solid surface, allowing them to accumulate more mass in a gaseous form. This composition has allowed Jupiter to grow significantly larger than planets with solid surfaces.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the base of the denary number system?

2
8
10
16

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the base of the binary number system?

2
8
10
16

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the base of the hexadecimal number system?

2
8
10
16

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which number system is easier for humans to understand than binary?

Denary
Hexadecimal
Octal
All of the above

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if a value greater than 255 is stored in an 8-bit register?

It is automatically converted to hexadecimal
An overflow error occurs
The value is truncated
The system crashes

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a benefit of using hexadecimal?

It is easier for humans to understand than binary
It is more efficient for processing than binary
It can represent larger numbers than binary
It is the only system used in computer science

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