Y9 Data Representation

Y9 Data Representation

9th Grade

•

30 Qs

quiz-placeholder

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Y9 Data Representation

Y9 Data Representation

Assessment

Quiz

•

Computers

•

9th Grade

•

Practice Problem

•

Medium

Created by

Phil Branson

Used 71+ times

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30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The type of compression which removes some of the data from a file in order to reduce its size is

Lossy

Lossless

Lossleader

Lost

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does lossy compression work with sound files?

It removes background noise

It removes sound humans can't hear

It reduces the sampling size

It filters the loudest sounds

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is each pixel in a bitmap image represented by?

A binary code

A hex value

Machine code

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many colours can be represented in a 1 bit image

1

2

0

3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many colours can be represented by a two bit image?

2

3

4

1

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is bit depth?

The number of bits used to store a sample

The size of a sound file

The size of an image file

An RGB value

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Convert 11001001 to Denary.

199
200
201
202

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