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Daily Practice · GCSE Computer Science

March 1995 - GCSE Computer Science 5-a-day

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March 1995

31 sheets · 155 questions · GCSE

March 1995 compilationAll answers

Every sheet in March 1995

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 1995An 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.
  2. 2nd March 1995Evaluate X = NOT A AND B when A = 0 and B = 1.
  3. 3rd March 1995A 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.
  4. 4th March 1995Give one advantage of a star topology compared with a mesh topology.
  5. 5th March 1995Explain the purpose of a breakpoint.
  6. 6th March 1995Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  7. 7th March 1995State the three stages of the fetch-decode-execute cycle in the order they occur.
  8. 8th March 1995State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  9. 9th March 1995Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  10. 10th March 1995Define the term 'pixel'.
  11. 11th March 1995Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  12. 12th March 1995Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  13. 13th March 1995Evaluate the expression 23 DIV 4.
  14. 14th March 1995State the value returned by LENGTH(word) if word stores the string 'Computer'.
  15. 15th March 1995A 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.
  16. 16th March 1995Name the four layers of the TCP/IP model in order from the one closest to the user.
  17. 17th March 1995A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  18. 18th March 1995A 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.
  19. 19th March 1995A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  20. 20th March 1995An 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.
  21. 21st March 1995Complete: NOT 0 = ?
  22. 22nd March 1995State how many different values can be represented using 5 bits, and explain your reasoning.
  23. 23rd March 1995State what LAN stands for.
  24. 24th March 1995A 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.
  25. 25th March 1995An 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.
  26. 26th March 1995Which CPU register holds the address of the next instruction to be fetched?
  27. 27th March 1995Distinguish between the network security threats known as phishing and pharming.
  28. 28th March 1995An array named temps holds 12 values. State the index of the first item and the index of the last item.
  29. 29th March 1995A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  30. 30th March 1995A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  31. 31st March 1995A streaming company records which shows each user watches and uses this to recommend similar shows. Explain one ethical concern this could raise, even if the company only uses the data to improve recommendations.