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Daily Practice · GCSE Computer Science

October 1970 5-a-day

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October 1970

31 sheets · 155 questions · GCSE

October 1970 compilationAll answers

Every sheet in October 1970

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

  1. 1st October 1970A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
  2. 2nd October 1970Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  3. 3rd October 1970Define the term protocol.
  4. 4th October 1970Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
  5. 5th October 1970A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  6. 6th October 1970Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.
  7. 7th October 1970Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
  8. 8th October 1970State the two values a Boolean data type can hold.
  9. 9th October 1970Convert the denary number 39 to an 8-bit binary number, showing your working.
  10. 10th October 1970Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
  11. 11th October 1970Explain the purpose of a breakpoint.
  12. 12th October 1970Convert the hexadecimal number 1A to denary.
  13. 13th October 1970Convert the denary number 156 to an 8 bit binary number.
  14. 14th October 1970Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
  15. 15th October 1970Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  16. 16th October 1970An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  17. 17th October 1970A 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.
  18. 18th October 1970Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  19. 19th October 1970Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  20. 20th October 1970Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  21. 21st October 1970A 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.
  22. 22nd October 1970Name the four layers of the TCP/IP model in order from the one closest to the user.
  23. 23rd October 1970Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  24. 24th October 1970A 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.
  25. 25th October 1970Define the term 'interrupt' as used to describe a signal received by a CPU.
  26. 26th October 1970An 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.
  27. 27th October 1970Evaluate X = NOT A AND B when A = 0 and B = 1.
  28. 28th October 1970Convert the hexadecimal number FF to an 8-bit binary number.
  29. 29th October 1970Give one advantage of a star topology compared with a mesh topology.
  30. 30th October 1970A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.
  31. 31st October 1970Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.