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Daily Practice · GCSE Computer Science

January 1997 - GCSE Computer Science 5-a-day

← Today's GCSE Computer Science sheet

January 1997

31 sheets · 155 questions · GCSE

January 1997 compilationAll answers

Every sheet in January 1997

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

  1. 1st January 1997Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
  2. 2nd January 1997Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  3. 3rd January 1997An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  4. 4th January 1997A 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.
  5. 5th January 1997Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  6. 6th January 1997Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  7. 7th January 1997Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  8. 8th January 1997A 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.
  9. 9th January 1997Name the four layers of the TCP/IP model in order from the one closest to the user.
  10. 10th January 1997Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  11. 11th January 1997A 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.
  12. 12th January 1997Define the term 'interrupt' as used to describe a signal received by a CPU.
  13. 13th January 1997An 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.
  14. 14th January 1997Evaluate X = NOT A AND B when A = 0 and B = 1.
  15. 15th January 1997Convert the hexadecimal number FF to an 8-bit binary number.
  16. 16th January 1997Give one advantage of a star topology compared with a mesh topology.
  17. 17th January 1997A 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.
  18. 18th January 1997Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  19. 19th January 1997State the three stages of the fetch-decode-execute cycle in the order they occur.
  20. 20th January 1997State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  21. 21st January 1997An array named temps holds 12 values. State the index of the first item and the index of the last item.
  22. 22nd January 1997Define the term 'pixel'.
  23. 23rd January 1997Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  24. 24th January 1997Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  25. 25th January 1997Evaluate the expression 23 DIV 4.
  26. 26th January 1997State the correct order of the three operations used to read data from a text file.
  27. 27th January 1997A 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.
  28. 28th January 1997State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  29. 29th January 1997A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  30. 30th January 1997A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
  31. 31st January 1997A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).