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Year 10 EOT1 Revision Nov 2022

Total questions: 90

Worksheet time: 45mins

Name
Class
Date
1.

What is meant by sampling resolution (bit depth)?

a)

The number of bits per sample.

b)

The number of bytes per sample.

c)

The number of pixels per sample.

d)

The number of data per sample.

2.

Bitmap images are made up of (a)  

3.

The number of bits used to represent each color is called the (a)  

4.

What is an Image Resolution?

a)

Number of pixels in an image.

b)

Number of bits in an image.

c)

Number of bytes in an image.

d)

Number of data in an image.

5.

Main drawback of high resolution images?

a)

Increase in file size

b)

Increase in pixels

c)

The quality of Image.

d)

No drawbacks.

6.

How many bits are used in ASCII?

(a)  

7.

How many Bytes are used in Unicode?

(a)  

8.

What is the maximum number of values that can be represented in 8 bits

a)

16

b)

256

c)

65,536

d)

128

9.

A character set is...

a)

What language can be used in a computer system

b)

The fonts the computer has installed

c)

The possible characters that can be represented by a computer system

10.

How many colours can be represented with a 4 bit colour depth?

(a)  

11.

What unit is a sound's sample rate measured in?

a)

bits per second (bps)

b)

Hertz (Hz)

c)

Megabits per second (Mbps)

12.
The following is a correct order of units of storage from lowest to highest:
a)
a bit, a nibble, a byte, a kilobyte, a megabyte, a gigabyte, a terabyte
b)
a bit, a byte, a nibble, a kilobyte, a megabyte, a gigabyte, a terabyte
c)
a bit, a nibble, a byte, a megabyte, a kilobyte, a gigabyte, a terabyte
d)
a byte, a bit, a nibble, a megabyte, a kilobyte, a gigabyte, a terabyte
13.
How many colours can be used for each pixel if the colour depth is 4 bit?
a)
4 colours
b)
5 colours
c)
15 colours
d)
16 colours
14.
How could you reduce the file size of an image?
a)
Reduce the numbr of colours used per pixel (colour depth)
b)
Reduce the dimensions of the image.
c)
Compress the file using a lossy compression file type.
d)
All of these
15.

Which is larger?

a)

Megabyte

b)

Gigabyte

16.

Which is the smallest form of data?

a)

Bit

b)

Byte

c)

Nibble

d)

8 Binary Digits

17.

How many Kilobytes are in a Megabyte

a)

10

b)

100

c)

1,000

d)

10,000

18.

Which is larger?

a)

Megabyte

b)

Gigabyte

19.

How many Bits are in a Byte

a)

2

b)

4

c)

10

d)

8

20.

How many Byte are in a Megabyte?

a)

1,000

b)

1,000,000

c)

1,000,000,000

21.

How many Megabytes are in a Gigabyte?

a)

1,000

b)

10,000

c)

1,000,000

d)

1,000,000,000

22.

How many Byte are in a Megabyte?

a)

1,000

b)

1,000,000

c)

1,000,000,000

23.

how many terabits in 2 terabytes

a)

12

b)

16

c)

17

d)

15

e)

24

24.

how many megabibits in 56 megabits

a)

53.4058

b)

53.4059

c)

53.4060

d)

53.4057

25.

how many tebibits in a terabit

a)

90.9494

b)

90.9498

c)

90.9497

d)

90.9495

26.
USB stands for:
a)
Universal Serial Bus
b)
Unified Serial Bus
c)
Unique Serial Bus
d)
Unqualified Students Busk
27.
Half Duplex transmission is where:
a)
Data can only be transmitted in one direction
b)
Data can be transmitted in one direction at a time
c)
Data can be sent both ways at the same time
d)
A made up term to confuse us
28.
Full Duplex transmission is where:
a)
Data can only be transmitted in one direction
b)
Data can be transmitted in one direction at a time
c)
Data can be sent both ways at the same time
d)
A made up term to confuse us
29.
Simplex transmission is where:
a)
Data can only be transmitted in one direction
b)
Data can be transmitted in one direction at a time
c)
Data can be sent both ways at the same time
d)
A made up term to confuse us
30.
If you have a 2Gbit/s connection to your ISP how long will it take to download a 1GByte file?
a)
0.5 seconds
b)
2 seconds
c)
4 seconds
d)
8 seconds
31.
Parallel transmission is where
a)
1 bit is transmitted at a time
b)
Data can only be transmitted in one direction at a time
c)
8 bits are transmitted at the same time
d)
8 elephants are ridden at the same time
32.
An example of parallel transmission is:
a)
Using a USB to connect to your phone
b)
Sending data via bluetooth
c)
Connecting two parts of an IC
d)
Plugging in a mouse
33.
What should the value of ? be if the byte ?0110110 is transmitted using even parity
a)
0
b)
1
c)
2
d)
3
34.
What should the value of ? be if the byte ?1000110 is transmitted using even parity
a)
0
b)
1
c)
2
d)
3
35.
What should the value of ? be if the byte ?0000000 is transmitted using odd parity
a)
0
b)
1
c)
2
d)
3
36.
Connecting a phone to a computer would use a serial or parallel connection?
a)
serial
b)
parallel
37.
What do you call sending a number that is calculated from the data transmitted which is used to check for errors?
a)
Hoping
b)
Checking
c)
Checksum
d)
Checkcalc
38.
If an error is detected what should the receiver do?
a)
Correct the error themselves
b)
Ask for the data to be retransmitted
c)
Ignore it and hope for the best
d)
Tell the user
39.

What type of transmission is used in walkie-talkies?

a)

Simplex

b)

Full Duplex

c)

Half Duplex

d)

Complex

40.

Why is parallel data transmission faster than serial data transmission? 

a)

Because multiple channels are used in parallel data transmission.

b)

Because multiple bits are sent over a single channel in parallel data transmission.

c)

Because data might be skewed in serial data transmission slowing the rate of transmission.

d)

None of the other answers are correct.

41.

What type of transmission is used to transfer data from computer to printer? 

(a)  

42.

What type of transmission is USB?

a)

Synchronous parallel transmission

b)

Asynchronous serial transmission

c)

Asynchronous parallel transmission

d)

Synchronous serial transmission

43.

Which of the following correctly represents the data 1101011 if odd parity is used?

a)

01101011

b)

11101011

c)

11010110

d)

11101011

44.

In which of the following methods, is an ACKNOWLEDGEMENT sent to the sender for error-checking?

a)

Automatic Repeat Request

b)

Checksum

c)

Echo Check

45.

The types of transmission that devices can use are:

a)

Serial and Parallel

b)

Simplex

c)

Duplex

d)

Full Duplex

46.

--------- transmission is when multiple bits of data are sent at the same time along different channels in the same cabling

(a)  

47.

In a half duplex transmission two way communication is possible, it is not possible to transmit in both directions at the same time

a)

TRUE

b)

FALSE

48.

Which Transmission device is the newest technology?

a)

Serial Port

b)

Parallel Port

c)

Universal Serial Bus (USB)

49.

Which of the following are methods for error detection?

a)

Parity Check

b)

Data Check

c)

Echo Check

d)

Checksum

50.

What is an Automatic Repeat Request ARQ used for?

a)

Data Checking

b)

Error checking

c)

Check Digit

d)

Encrypting data

51.

Which of the following is not part of the Data Packet?

a)

Router

b)

Trailer

c)

Payload

d)

Packet Header

52.

What does the Packet Header contain?

a)

Destination address

b)

A Packet Number

c)

Senders address

d)

Packet switching

53.

How big is a packet of transmitted data normally?

a)

64gb

b)

64 Kib

c)

128Kib

d)

512mb

54.

A network .......... can be defined as the connection point among network devices such as routers, printers, or switches that can receive and send data from one endpoint to the other.

a)

CPU

b)

Node

c)

RAM

d)

USB

55.

What does a router do?

a)

A router is something that helps plan your car destination from A to B

b)

A router allows the wifi to extend around your house

c)

A router takes data packets from devices and directs them to the right place.

d)

It tells the ROM chip on a computer to Fetch Decode and execute instructions

56.
USB stands for:
a)
Universal Serial Bus
b)
Unified Serial Bus
c)
Unique Serial Bus
d)
Unqualified Students Busk
57.
If an error is detected what should the receiver do?
a)
Correct the error themselves
b)
Ask for the data to be retransmitted
c)
Ignore it and hope for the best
d)
Tell the user
58.
What should the value of ? be if the byte ?1000110 is transmitted using even parity
a)
0
b)
1
c)
2
d)
3
59.

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

60.

What is the sample rate?

a)

The number of times a sound wave is sampled per second

b)

The number of bits used to store each sample

c)

How loud a sound is

d)

The size of the sound wave

61.

What is sample rate measure in?

a)

Bits

b)

Hertz

c)

GB

d)

amps

62.

What is used to convert a sound wave in to a digital format?

a)

A sound wave converter

b)

A router

c)

An amplitude to digital converter

d)

Analogue to digital converter

63.

What is the formula for finding a sound files size?

a)

size = rate * resolution * seconds

b)

size = rate * resolution * minutes

c)

size = amplitude * bits * seconds

d)

size = sample * frequency * bits

64.

What is amplitude?

a)

Number of samples taken

b)

The number of bits per sample

c)

The height of the sound wave

d)

The pitch

65.
What is Pitch?
a)
How loud or soft a sound is
b)
muscle that holds vocal cords
c)
movement back and forth
d)
how high or low a sound is
66.
The most common sampling rate for sound files is 44.1 khz.
a)
True
b)
False
67.
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.
68.
How is sound caused?
a)
By playing it through a hi-fi with speakers
b)
Vibrations travelling through air, water or metal.
69.
What is the difference between analogue and digital data?
a)
Analogue is continuous data, whereas digital signals have two values, 0 and 1.
b)
Analogue has two values 0 and 1, whereas digital is continuous data.
70.
A kilobyte is usually rounded to 1000 bytes. But actually it is _____ bytes:
a)
1024
b)
512
c)
1048
d)
9600
71.
A gigabyte consists of 1024:
a)
megabytes
b)
terabytes
c)
kilobytes
d)
nibbles
72.
The following is a correct order of units of storage from lowest to highest:
a)
a bit, a nibble, a byte, a kilobyte, a megabyte, a gigabyte, a terabyte
b)
a bit, a byte, a nibble, a kilobyte, a megabyte, a gigabyte, a terabyte
c)
a bit, a nibble, a byte, a megabyte, a kilobyte, a gigabyte, a terabyte
d)
a byte, a bit, a nibble, a megabyte, a kilobyte, a gigabyte, a terabyte
73.

Which is the smallest form of data?

a)

Bit

b)

Byte

c)

Nibble

d)

8 Binary Digits

74.

Convert 129 to binary

a)

10000001

b)

01111110

c)

01000000

d)

11001100

75.
Colour depth refers to:
a)
How many bits are used in a file to store colour information in every pixel
b)
Resolution divided by the number of colours in an image.
c)
Degree of file compression applied to an image file.
d)
Repeated resampling of an image.
76.
The smallest unit of data stored in an image file is called:
a)
Pixels
b)
Resolution
c)
Alpha
d)
Bitmap.
77.
A microphone converts the changes in air pressure into voltage changes which are then digitised.
a)
True
b)
False
78.

How many bits per pixel do you need to make 4 colours?

a)

colour depth of 1

b)

colour depth of 2

c)

colour depth of 3

d)

colour depth of 4

79.

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.

80.

What is the file size in bits, of a 10x10dpi bitmap image with a colour depth of 4 bits?

a)

4000 bits

b)

1000 bits

c)

1600 bits

d)

400 bits

81.

Increasing Colour Depth and Resolution

a)

increases the File size

b)

decreases the File size

c)

increases memory

d)

decreases sound

82.

How would decreasing the DPI of an image affect the image quality?

a)

It would make it more colourful

b)

It would make it more detailed

c)

It would make it less colourful

d)

It would make it less detailed

83.

How many bits was used to encode the original ASCII character set?

a)

7

b)

8

c)

16

d)

4

84.

How is Unicode different from ASCII

a)

Unicode represents fewer characters

b)

Unicode represents more characters

c)

Unicode isn't for letters

d)

Unicode doesn't have numbers

85.
Upper and lower case letters have a different ASCII code. (3-4)
a)
True
b)
False
86.
What is the maximum number of values that can be represented in 7 bits? (4-6)
a)
16
b)
256
c)
65,536
d)
128
87.

A sound clip uses a sample rate of 4000Hz, an 8 bit sample resolution, and is 10 seconds long. What is the file size in bits?

a)

4,000

b)

32,000

c)

40,000

d)

320,000

88.

Which car will the following python code print?

cars=["Mercedes","Toyota","KIA","Hyundai"]

Output the 4th car in the list.

print(cars[3])

a)

Toyota

b)

Hyundai

c)

Mercedes

d)

Kia

89.

What is an overflow error?

a)

When you type too many letters in a table and the text wont wrap around

b)

When the denary you input goes outside the current data register

c)

When the binary code exceeds the cpacity of the current register

d)

When too many hexadecimal letters are used in an 8 bit register

90.

What is one use of Hexadecimal in the real world?

a)

To read encrypted codes

b)

To give each computer a unique identification (MAC Address)

c)

To convert data transmissions into plaintext

d)

To identify samples of captured sound

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