SST Yr7 - NCCE - Data & Information

Question 1: A base-10 number is known as …

• A ASCII
• B Binary
• C Denary
• D Tenary

Question 2: How many bits are in a byte?

• A 1
• B 4
• C 8
• D 256

Question 3: Identify the denary value of the binary number 1010

• A 5
• B 10
• C 12
• D 20

Question 4: A computer program stores data about the temperature in a room each hour. Example data is: 22.5, 21.0, 18.9 Identify the most appropriate data type to use to store these values.

• A Boolean
• B Integer
• C Real
• D String

Question 5: What is a bitmap image made up of?

• A Coordinates
• B Formulae
• C Metadata
• D Pixels

Question 6: Why should data be validated?

• A To make sure it is correct
• B To make sure it is reasonable
• C To make sure it is the same as the original
• D To make sure the computer can store it

Question 7: A binary number is base …

• A 1
• B 2
• C 10
• D 11

Question 8: Which of the following describes how sound is recorded and stored by a computer?

• A The amplitude is measured at set intervals, and stored as a binary number
• B The amplitude is recorded 10 times a second, and stored as a binary number
• C The frequency is measured 10 times a second, and stored as a binary number
• D The frequency is measured at set intervals, and stored as a binary number

Question 9: Why does a computer store data in binary?

• A To operate switches that are either open or closed
• B It is the only language a computer can understand
• C To use if statements that are either true or false
• D It uses magnets to either transmit data or to not transmit data

Question 10: The password to get into a computer system is 'Pa55word'. A student enters 'pa55word' but is denied entry Identify the reason why the student is denied entry.

• A In a character set 'P' has a different value to 'p'
• B In a character set 's' cannot be represented as '5'
• C In a character set the number '5' cannot be stored
• D The password is too weak and the students must select a new password