Daily Practice · GCSE Computer Science
July 1984 5-a-day
Every sheet in July 1984
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 1984Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 2nd July 1984State the two values a Boolean data type can hold.
- 3rd July 1984Convert the denary number 39 to an 8-bit binary number, showing your working.
- 4th July 1984Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 5th July 1984Give one advantage and one disadvantage of using a compiler.
- 6th July 1984Convert the hexadecimal number 1A to denary.
- 7th July 1984Convert the denary number 156 to an 8 bit binary number.
- 8th July 1984Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
- 9th July 1984Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 10th July 1984An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
- 11th July 1984A CPU's cache has a hit rate of 80%. During a task the CPU makes 4000 requests for data. Calculate the number of cache hits and cache misses.
- 12th July 1984Describe two negative consequences of throwing away old computer hardware instead of recycling it.
- 13th July 1984Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
- 14th July 1984Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 15th July 1984A company backs up its files onto magnetic tape cartridges, each with a capacity of 3 TB. The company needs to back up 20 TB of data. Calculate the minimum number of cartridges needed.
- 16th July 1984A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
- 17th July 1984Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
- 18th July 1984A table called members has fields memberId, firstName, lastName and joinYear. Write an SQL statement that adds a new record with memberId 12, firstName 'Priya', lastName 'Shah' and joinYear 2026.
- 19th July 1984Define the term 'interrupt' as used to describe a signal received by a CPU.
- 20th July 1984An array called items contains [12, 45, 7, 30, 19] at indices 0 to 4. Describe how a linear search would locate the value 30, stating the number of comparisons needed.
- 21st July 1984Evaluate X = NOT A AND B when A = 0 and B = 1.
- 22nd July 1984Convert the hexadecimal number FF to an 8-bit binary number.
- 23rd July 1984Give one advantage of a star topology compared with a mesh topology.
- 24th July 1984Name the translator used for assembly language and describe how it differs from a compiler.
- 25th July 1984Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 26th July 1984State the three stages of the fetch-decode-execute cycle in the order they occur.
- 27th July 1984State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 28th July 1984Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 29th July 1984Define the term 'pixel'.
- 30th July 1984Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 31st July 1984Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?