Revision Library
/Subjects/Computer Science/Daily Practice
Daily Practice · GCSE Computer Science

April 1993 - GCSE Computer Science 5-a-day

← Today's GCSE Computer Science sheet

April 1993

30 sheets · 150 questions · GCSE

April 1993 compilationAll answers

Every sheet in April 1993

The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.

  1. 1st April 1993Give one advantage and one disadvantage of using a compiler.
  2. 2nd April 1993Convert the hexadecimal number 1A to denary.
  3. 3rd April 1993Convert the denary number 156 to an 8 bit binary number.
  4. 4th April 1993Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
  5. 5th April 1993Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  6. 6th April 1993An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  7. 7th April 1993A 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.
  8. 8th April 1993Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  9. 9th April 1993Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  10. 10th April 1993Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  11. 11th April 1993A 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.
  12. 12th April 1993A 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?
  13. 13th April 1993Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  14. 14th April 1993A 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.
  15. 15th April 1993Define the term 'interrupt' as used to describe a signal received by a CPU.
  16. 16th April 1993An 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.
  17. 17th April 1993Evaluate X = NOT A AND B when A = 0 and B = 1.
  18. 18th April 1993Convert the hexadecimal number FF to an 8-bit binary number.
  19. 19th April 1993Give one advantage of a star topology compared with a mesh topology.
  20. 20th April 1993Name the translator used for assembly language and describe how it differs from a compiler.
  21. 21st April 1993Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  22. 22nd April 1993State the three stages of the fetch-decode-execute cycle in the order they occur.
  23. 23rd April 1993State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  24. 24th April 1993Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  25. 25th April 1993Define the term 'pixel'.
  26. 26th April 1993Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  27. 27th April 1993Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  28. 28th April 1993Evaluate the expression 23 DIV 4.
  29. 29th April 1993State the correct order of the three operations used to read data from a text file.
  30. 30th April 1993A 1 TB hard disk drive costs 40 pounds. A 500 GB solid-state drive costs 60 pounds. Calculate the cost per gigabyte of each device, and state which is cheaper per GB. Use 1 TB = 1000 GB.