wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

J277 1.2.4 Sound/Image Representation

Total questions: 42

Worksheet time: 20mins

Name
Class
Date
1.

The 0's and 1's are known as

a)

binary.

b)

computer talk.

c)

code.

d)

the matrix.

2.

A single character requires how much storage?

a)

1 KB

b)

1 Byte

c)

1 bit

d)

1 MB

3.

How much storage will be required by a six letter word?

a)

6 KB

b)

6 bits

c)

6 Bytes

d)

6 MB

4.

Which of the following technologies uses light to store data?

a)

Optical storage

b)

Magnetic storage

c)

Solid state storage

d)

Cloud storage

5.

Google Drive is an example of which of the following technologies?

a)

Optical storage

b)

Magnetic storage

c)

Solid state storage

d)

Cloud storage

6.

Which of the following are types of file compression?

a)

Lossy

b)

Lossless

c)

Reduce

d)

Minimise

7.

Which of the following types of compression makes the smile smaller by reducing quality?

a)

Lossy

b)

Lossless

c)

Reduce

d)

Minimise

8.

Converting data into an unreadable code to prevent unauthorised access is called what?

a)

Encryption

b)

Coding

c)

Suppression

d)

Decryption

9.
What are the only two numbers you can use in binary?
a)
0 and 1
b)
1 and 2
c)
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
d)
1, 2, 4, 8, 16
10.

Which of these are the correct place values for binary?

a)

128,64,32,16,8,4,2,1

b)

128, 68,34,12,6,4,2,1

c)

1,0

d)

0,1

11.
What is the point of binary?
a)
It represents how computers interpret electrical signals
b)
Because we like to make you do extra maths ;-D
c)
For the lulz
d)
Because it describes star systems
12.
How would you write the number two in binary?
a)
1001
b)
0001
c)
0000
d)
0010
13.
Computers can only understand 0s and 1s.
a)
True
b)
False
14.
A bit is 
a)
a numerical label assigned to each device.
b)
the smallest unit of data in a computer.
c)
a keyboarding term for typing.
d)
is a numeral system made up of 16 symbols.
15.
A group of 8 bits is known as a gigabyte.
a)
True
b)
False
16.
8 bytes = 1 bit
a)
TRUE
b)
FALSE
17.
(Fill in the blank to complete the sentence) Tiny squares called ..... are the building blocks of all digital images.
a)
elements
b)
squares
c)
pixars
d)
pixels
18.
The digital picture shown has been zoomed in and appears now to be very 'blocky'. What is the correct term for this?
a)
Poor resolution
b)
Digitisation
c)
Pixelation
d)
Granularity
19.
Colour depth is the term used to describe .....
N.B. The term 'bit' means a binary digit e.g. '1' or '0'
a)
how many colours have been used to make the picture
b)
how many colours there in each pixel
c)
none of these
d)
the number of bits used to indicate the colour of a single pixel
20.
Resolution means
a)
how fast can the file be sent
b)
how much detail in an image. higher resolution means more image detail
c)
exactly
d)
change picture so it looks wrong
21.

In a bitmap graphic each pixel is represented in _______

a)

Denary

b)

Binary

c)

Hexadecimal

d)

By letters

22.

A binary code represents

a)

the colour of each pixel.

b)

the density of pixels in an image.

c)

the information stored in an image to help recreate the image.

d)

the number of bits used for each pixel.

23.

Bitmap Colour Depth is

a)

the colour of each pixel.

b)

the density of pixels in an image.

c)

information stored in an image to help recreate the image.

d)

the number of bits used for each pixel.

24.

What is the colour depth of the image?

a)

colour depth of 1

b)

colour depth of 2

c)

colour depth of 4

d)

colour depth of 16

25.
Digital sound always sounds better than analogue.
a)
False
b)
True
26.
The following is true about sampling rates:
a)
They measure a number of snapshots of sound taken per second.
b)
They are not as important as bit rates.
c)
They are different for every song, depending on its loudness.
27.
DAC does this:
a)
Converts a binary stored version of a recording to voltage changes that speakers can reproduce.
b)
Takes voltage changes and digitises them for further processing and storage.
c)
Amplifies the sound and makes it digitally clean.
28.
Lossy compression works by identifying sound frequencies that are not obvious and deleting them.
a)
True
b)
False
29.

What is sample resolution?

a)

The number of bits used to store each sample

b)

The number of times a wave is sampled

c)

How loud a sound is

d)

How quiet a sound is

30.

What is sample rate measure in?

a)

Bits

b)

Hertz

c)

GB

d)

amps

31.
Identify a false statement:
a)
Higher bit rates usually improve the sound quality and result in smaller file size.
b)
Higher bit rates usually improve the sound quality but result in larger file size.
c)
To record a sound into binary format, ADC will be applied rather than DAC.
32.
The following is true about metadata:
a)
It is data about data.
b)
It is corrupted data.
c)
It significantly increases file sizes.
33.
The following is often stored in metadata:
a)
All of these.
b)
Colour depth
c)
Height and Width of an image
d)
Compression algorithm applied.
34.
If image metadata is corrupted,
a)
The resulting picture is not displayed properly.
b)
It is easily fixed.
c)
Will not affect printing and displaying of the file.
35.

What are bitmaps made up of?

a)

Pixels

b)

Bit depth

c)

Samples

d)

Resolution

36.
Lossy compression
a)
A data compression technique in which there is a loss of information
b)
The dynamic representation of a program during execution
c)
Basic values or facts
d)
the syntactic element in a markup language that indicates how information should be displayed
e)
All Options are incorrect
37.
Multimedia
a)
Several different types of media
b)
Storing image information pixel by pixel
c)
The process of converting cipher text into plaintext
d)
A set of high-speed networks carrying Internet traffic
e)
All Options are incorrect
38.
Pixels
a)
A continuous representation of data
b)
Individual dots used to represent a picture; stands for picture elements
c)
A card with an embedded memory chip used to identify users and control access
d)
the illusion created by a time-sharing system that each user has a dedicated machine
e)
All Options are incorrect
39.
Lossless compression
a)
A data compression technique in which there is no loss of information
b)
Individual dots used to represent a picture; stands for picture elements
c)
The central processing unit, a combination of the arithmetic/logic unit and the control unit; the ‘brain ‘of a computer that interprets and executes instructions
d)
The techniques and policies used to ensure proper access to data
e)
All Options are incorrect
40.
Raster graphics format
a)
The size of the compressed data divided by the size of the uncompressed data
b)
Storing image information pixel by pixel
c)
the syntactic element in a markup language that indicates how information should be displayed
d)
a malicious stand-alone program that often targets network resources are
e)
All Options are incorrect
41.
File type
a)
A distributed approach in which a client makes requests of the server and the server response
b)
The part of a hostname that specifies a specific organisation or group
c)
The specific kind of information contained in a file, such as a Java program or Microsoft Word document
d)
The ability of the subprogram to call itself
e)
All Options are incorrect
42.
Data compression
a)
A single value in a database record
b)
Reducing the amount of space needed to store a piece of data
c)
A single value in a database record
d)
Reducing the amount of space needed to store a piece of data
e)
All Options are incorrect

Similar Resources on Wayground

L3 Digital Technology (entry test)

45 questions

L3 Digital Technology (entry test)

quiz

Worksheet

•

11th - 12th Grade

KIỂM TRA CUỐI HỌC KỲ II MÔN TIN LỚP 9 KNTT

40 questions

KIỂM TRA CUỐI HỌC KỲ II MÔN TIN LỚP 9 KNTT

quiz

Worksheet

•

9th Grade

tin học 11 ôn tập cuối kì 1

40 questions

tin học 11 ôn tập cuối kì 1

quiz

Worksheet

•

12th Grade

Unit 2 Creating Systems to Manage Information Quiz

41 questions

Unit 2 Creating Systems to Manage Information Quiz

quiz

Worksheet

•

12th Grade

IC3 GS6-LV1-MODUL 1

42 questions

IC3 GS6-LV1-MODUL 1

quiz

Worksheet

•

6th - 8th Grade

BÀI TẬP CHƯƠNG III TIN HỌC 10

44 questions

BÀI TẬP CHƯƠNG III TIN HỌC 10

quiz

Worksheet

•

10th Grade

KOMUNIKASI SINKRON&ASINKRON (kd 3.10)

40 questions

KOMUNIKASI SINKRON&ASINKRON (kd 3.10)

quiz

Worksheet

•

10th Grade

Computer Network

40 questions

Computer Network

quiz

Worksheet

•

12th Grade - University