KS3 ICT | Data - numbers and symbols to be processed

Back to ICT

ICT Quiz - Data 01 (Questions)

See how much you know about data in this KS3 ICT quiz on the subject. Computers are designed to process data so it is important to understand what 'data' is and how it is different to 'information'. In general terms, it means the facts and statistics that are collected for analysis. When we talk about data in computers, it is slightly different. It can be defined as the numbers, letters and symbols that are stored, processed and transmitted by a computer. Data has no context in other words. £25 is an example of data but there is no indication of what it is. It could be cost of something, an amount of money that has been lost, how much money is in a piggy bank and so forth.

Storing data on a computer is done using binary code. Binary consists of only ones and zeros. It can be stored in different places on a computer - its built-in memory or a hard disk for example, or it could be stored off the computer on a memory stick (flash drive) or other device. Data is entered into a computer using an input device. Some input devices are automatic like a light sensor or a barcode reader. Others are manual, like a keyboard, touch screen or mouse.

Data is .......

[ ]	an item of computer software
[ ]	letters, numbers or characters with meaning
[ ]	letters, numbers or characters with no meaning
[ ]	stored numbers

A storage location contains the digits - 31122012.

[ ]	This might be a piece of data
[ ]	This is a date
[ ]	This is a random number
[ ]	None of these

Data is stored by computers in locations called .......

[ ]	bikes
[ ]	binaries
[ ]	bytes
[ ]	byttes

Computers use binary code to store data because .......

[ ]	binary code is more reliable
[ ]	binary code is much faster
[ ]	binary code takes up less space
[ ]	electronic circuits can only be 'on' or 'off'

In most computers how many 'bits' make up a 'byte'?

[ ]	8
[ ]	9
[ ]	32
[ ]	36

Which is not a measure of storage size?

[ ]	Megabyte
[ ]	Gigabyte
[ ]	Terabyte
[ ]	Kilabyte

Data enters a computer .......

[ ]	before processing but after the entry stage
[ ]	during the entry stage
[ ]	during the input stage
[ ]	during the processing stage

Data entered should be 'validated'. This means .......

[ ]	it should be checked to make sure it contains no errors
[ ]	it should be checked to make sure it is correct
[ ]	it should be checked to make sure it is sensible
[ ]	All of the above.

Data entered should be 'verified'. This means .......

[ ]	it should be checked for viruses
[ ]	it should be checked to make sure it is completely accurate
[ ]	it should be checked to make sure it is entered correctly
[ ]	it should be checked to make sure it is reasonable

10.

Which is not a means of entering data into a computer?

[ ]	Bar-code reader
[ ]	Keyboard
[ ]	Monitor
[ ]	Scanner

ICT Quiz - Data 01 (Answers)

Data is .......

[ ]	an item of computer software
[ ]	letters, numbers or characters with meaning
[x]	letters, numbers or characters with no meaning
[ ]	stored numbers

Data turns into information when it is analysed

A storage location contains the digits - 31122012.

[x]	This might be a piece of data
[ ]	This is a date
[ ]	This is a random number
[ ]	None of these

Looks like a date but really could be almost anything

Data is stored by computers in locations called .......

[ ]	bikes
[ ]	binaries
[x]	bytes
[ ]	byttes

Bite or bites are alternative spellings

Computers use binary code to store data because .......

[ ]	binary code is more reliable
[ ]	binary code is much faster
[ ]	binary code takes up less space
[x]	electronic circuits can only be 'on' or 'off'

A circuit which is 'on' represents '1', 'off' represents '0'

In most computers how many 'bits' make up a 'byte'?

[x]	8
[ ]	9
[ ]	32
[ ]	36

The most common answer - it's not the only correct answer because there are some computers that use more or fewer bits to record a single character

Which is not a measure of storage size?

[ ]	Megabyte
[ ]	Gigabyte
[ ]	Terabyte
[x]	Kilabyte

It is spelt kilobyte

Data enters a computer .......

[ ]	before processing but after the entry stage
[ ]	during the entry stage
[x]	during the input stage
[ ]	during the processing stage

Remember the order - input, processing then output

Data entered should be 'validated'. This means .......

[ ]	it should be checked to make sure it contains no errors
[ ]	it should be checked to make sure it is correct
[x]	it should be checked to make sure it is sensible
[ ]	All of the above.

Validation is checking for sensible, reasonable data that is relevant

Data entered should be 'verified'. This means .......

[ ]	it should be checked for viruses
[ ]	it should be checked to make sure it is completely accurate
[x]	it should be checked to make sure it is entered correctly
[ ]	it should be checked to make sure it is reasonable

Entering a password twice is a common example

10.

Which is not a means of entering data into a computer?

[ ]	Bar-code reader
[ ]	Keyboard
[x]	Monitor
[ ]	Scanner

A monitor is an output device