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Daily Practice · GCSE Computer Science

March 1985 5-a-day

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March 1985

31 sheets · 155 questions · GCSE

March 1985 compilationAll answers

Every sheet in March 1985

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

  1. 1st March 1985State the layer that IP operates in, and describe its job.
  2. 2nd March 1985Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  3. 3rd March 1985State what a foreign key is used for.
  4. 4th March 1985Define the term 'interrupt' as used to describe a signal received by a CPU.
  5. 5th March 1985An 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.
  6. 6th March 1985Evaluate X = NOT A AND B when A = 0 and B = 1.
  7. 7th March 1985A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
  8. 8th March 1985Give one advantage of a star topology compared with a mesh topology.
  9. 9th March 1985Describe what syntax highlighting is and how it helps a programmer.
  10. 10th March 1985Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  11. 11th March 1985State the three stages of the fetch-decode-execute cycle in the order they occur.
  12. 12th March 1985State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  13. 13th March 1985Trace 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).
  14. 14th March 1985Define the term 'pixel'.
  15. 15th March 1985Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  16. 16th March 1985Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  17. 17th March 1985Evaluate the expression 23 DIV 4.
  18. 18th March 1985State the value returned by LENGTH(word) if word stores the string 'Computer'.
  19. 19th March 1985A 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.
  20. 20th March 1985Explain the role of TCP when a large file is downloaded.
  21. 21st March 1985A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  22. 22nd March 1985A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
  23. 23rd March 1985A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  24. 24th March 1985An array contains [9, 2, 6], to be sorted using insertion sort. Show the state of the array after each new element has been inserted into its correct position.
  25. 25th March 1985Complete: NOT 0 = ?
  26. 26th March 1985State how many different values can be represented using 5 bits, and explain your reasoning.
  27. 27th March 1985State what LAN stands for.
  28. 28th March 1985Give one advantage and one disadvantage of using a compiler.
  29. 29th March 1985An 8-bit register stores the value 01100000 (denary 96). State the resulting 8-bit binary value after a left shift by 1 place, and state whether an overflow occurs.
  30. 30th March 1985Which CPU register holds the address of the next instruction to be fetched?
  31. 31st March 1985Distinguish between the network security threats known as phishing and pharming.