BTEC Level 3 Computing Quiz: Data Representation

BTEC Level 3 Computing Quiz: Data Representation

12th Grade

10 Qs

quiz-placeholder

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BTEC Level 3 Computing Quiz: Data Representation

BTEC Level 3 Computing Quiz: Data Representation

Assessment

Quiz

Computers

12th Grade

Practice Problem

Hard

Created by

Mrs Kennedy

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the binary representation of the decimal number 25?

11100

10011

11001

10101

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the difference between ASCII and Unicode.

ASCII uses 7 bits to represent characters, while Unicode uses 16 bits.

ASCII and Unicode are the same thing.

ASCII is used for text, while Unicode is used for images.

ASCII uses 8 bits to represent characters, while Unicode uses 32 bits.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Convert the hexadecimal number 3A into its binary equivalent.

11001100

00111010

10101010

11110000

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using two's complement in binary representation?

To only represent positive numbers in binary form

To make the binary representation more colorful

To confuse the computer system

To represent both positive and negative numbers in binary form

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the process of converting a binary number to its hexadecimal equivalent.

Add 4 to each bit of the binary number to get the hexadecimal equivalent

Convert each bit of the binary number to its decimal equivalent and then to hexadecimal

Multiply the binary number by 16 to get the hexadecimal equivalent

Divide the binary number into groups of 4 bits, convert each group to its hexadecimal equivalent, and combine the results.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of bit depth in digital image representation?

It determines the brightness of the image

It affects the resolution of the image

It determines the number of colors or shades of gray that can be represented in an image.

It determines the size of the image file

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the concept of data compression and its impact on data representation.

Data compression reduces the size of data to save storage space and transmission time, allowing more data to be stored in the same amount of space and transmitted more quickly.

Data compression has no impact on data representation

Data compression slows down data transmission

Data compression increases the size of data to save storage space and transmission time

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