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Daily Practice · GCSE Computer Science

October 1960 5-a-day

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October 1960

31 sheets · 155 questions · GCSE

October 1960 compilationAll answers

Every sheet in October 1960

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 1960State one example of a file format that commonly uses lossy compression.
  2. 2nd October 1960State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  3. 3rd October 1960State whether the source code of proprietary (closed source) software is normally available for the public to view.
  4. 4th October 1960Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  5. 5th October 1960A 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.
  6. 6th October 1960Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  7. 7th October 1960State the layer that IP operates in, and describe its job.
  8. 8th October 1960Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
  9. 9th October 1960A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
  10. 10th October 1960Each 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.
  11. 11th October 1960Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
  12. 12th October 1960State the two values a Boolean data type can hold.
  13. 13th October 1960Convert the denary number 39 to an 8-bit binary number, showing your working.
  14. 14th October 1960Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
  15. 15th October 1960Describe what syntax highlighting is and how it helps a programmer.
  16. 16th October 1960Convert the hexadecimal number 1A to denary.
  17. 17th October 1960Convert the denary number 156 to an 8 bit binary number.
  18. 18th October 1960Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
  19. 19th October 1960Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
  20. 20th October 1960An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  21. 21st October 1960A 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.
  22. 22nd October 1960Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  23. 23rd October 1960Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  24. 24th October 1960Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  25. 25th October 1960A 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.
  26. 26th October 1960Explain the role of TCP when a large file is downloaded.
  27. 27th October 1960Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  28. 28th October 1960A 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.
  29. 29th October 1960Define the term 'interrupt' as used to describe a signal received by a CPU.
  30. 30th October 1960An 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.
  31. 31st October 1960Evaluate X = NOT A AND B when A = 0 and B = 1.