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Daily Practice · GCSE Computer Science

March 1965 5-a-day

← Today's GCSE Computer Science sheet

March 1965

31 sheets · 155 questions · GCSE

March 1965 compilationAll answers

Every sheet in March 1965

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 1965Convert the denary number 156 to an 8 bit binary number.
  2. 2nd March 1965Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
  3. 3rd March 1965Trace 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).
  4. 4th March 1965An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
  5. 5th March 1965A 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.
  6. 6th March 1965Describe two negative consequences of throwing away old computer hardware instead of recycling it.
  7. 7th March 1965Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
  8. 8th March 1965Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
  9. 9th March 1965A 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.
  10. 10th March 1965Explain the role of TCP when a large file is downloaded.
  11. 11th March 1965Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
  12. 12th March 1965State what a foreign key is used for.
  13. 13th March 1965Define the term 'interrupt' as used to describe a signal received by a CPU.
  14. 14th March 1965An 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.
  15. 15th March 1965Evaluate X = NOT A AND B when A = 0 and B = 1.
  16. 16th March 1965A 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.
  17. 17th March 1965Give one advantage of a star topology compared with a mesh topology.
  18. 18th March 1965Give one advantage and one disadvantage of using a compiler.
  19. 19th March 1965Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  20. 20th March 1965State the three stages of the fetch-decode-execute cycle in the order they occur.
  21. 21st March 1965State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  22. 22nd March 1965Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  23. 23rd March 1965Define the term 'pixel'.
  24. 24th March 1965Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  25. 25th March 1965Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  26. 26th March 1965Evaluate the expression 23 DIV 4.
  27. 27th March 1965State the value returned by LENGTH(word) if word stores the string 'Computer'.
  28. 28th March 1965A 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.
  29. 29th March 1965A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
  30. 30th March 1965A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  31. 31st March 1965A 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.