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WorksheetsAQA GCSE Computer Science - 3.3.3 Units of Information
Total questions: 20
Worksheet time: 7mins
Name
Class
Date
1.
What is the larget unit of information out of the following?
a)
Terabyte
b)
Kilobyte
c)
Megabyte
d)
Gigabyte
2.
What is a nibble in terms of a byte?
a)
Half a byte.
b)
Any unit smaller than a byte
c)
Four bytes
d)
Double the size of a byte
3.
How many Megabytes are there in a Gigabyte?
a)
1000
b)
500
c)
1024
d)
2000
4.
What is 9600 MB in GB?
a)
9.6GB
b)
9.375GB
c)
10GB
d)
9GB
5.
What is the average capacity of a hard disk SSD on a computer?
a)
1TB/1000GB
b)
250GB
c)
500GB
d)
100GB
6.
What is the smallest unit of information of the following?
a)
Bit
b)
Byte
c)
Nibble
d)
Kilobyte
7.
How does a hard drive store information?
a)
It creates a pattern of de/magnetised regions on the platter.
b)
Semiconductur chips are used.
c)
CPU sends it information to store.
d)
Electrical impulses are sent to the HDD which are coded as 1s and 0s, this is used to store the data.
8.
What is the average size of a smartphone photo?
a)
3MB
b)
3KB
c)
3GB
d)
3TB
9.
Which of the following is closest to 2^40 bytes?
a)
Terabyte
b)
Gigabyte
c)
Megabyte
d)
Petabyte
10.
What is a unit of information in computers?
a)
A fixed standardized unit which is used to measure the capacity of various systems.
b)
The capacity of any given storage system.
c)
A packet.
d)
The magnitude of a quantity.
11.
What letter(s) are used to represent a byte?
a)
B
b)
b
c)
By
d)
bi
12.
What letter(s) are used to represent a Petabyte?<br />
a)
PB
b)
Pb
c)
pB
d)
pb
13.
The word 'Hello' is written in 7 bit ASCII, how many bits in total does the word contain?
a)
35
b)
4
c)
7
d)
28
14.
This is the binary data for a 4x4 pixel image, calculate the number of bytes in it: <br />0000 1101 1111 0101
a)
2
b)
16
c)
4
d)
8
15.
How many bytes does 1 Petabyte represent?<br />
a)
10^15 B
b)
10^12 B
c)
2^50 B
d)
1,024 PB
16.
What is the relationship between a mebibyte and a megabyte?<br />
a)
A mebibyte is the closest power of 2 to a megabyte.<br />
b)
They are both the same value, there is no difference.<br />
c)
A mebibyte is half a megabyte.<br />
d)
A mebibyte is double a megabyte.<br />
17.
The memory size of storage systems are most commonly measured in...
a)
Terabytes
b)
Petabytes
c)
Tebibytes
d)
Kilobytes
18.
Why are hard drives smaller than advertised
a)
Windows judge the difference between units (e.g. MB to GB) as *1024, whereas manufacturers recognize it as *1000.
b)
Manufacturing error.
c)
Manufacturers round the capacity up to entice more customers.
d)
The advertisements are purposely misleading.
19.
What is the memory capacity of the human brain?
a)
2.5 Petabytes
b)
5 Terabytes
c)
4 Petabytes
d)
1 Yottabyte
20.
Choose the list which goes from smallest to largest
a)
Megabyte<br />Terabyte<br />Petabyte<br />Yottabyte
b)
Yottabyte<br />Petabyte<br />Terabyte<br />Megabyte
c)
Megabyte<br />Yottabyte<br />Petabyte<br />Terabyte
d)
Petabyte<br />Megabyte<br />Terabyte<br />Yottabyte
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