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Daily Practice · GCSE Computer Science

April 1960 5-a-day

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April 1960

30 sheets · 150 questions · GCSE

April 1960 compilationAll answers

Every sheet in April 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 April 1960A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  2. 2nd April 1960A 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.
  3. 3rd April 1960A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  4. 4th April 1960An 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.
  5. 5th April 1960Complete: NOT 0 = ?
  6. 6th April 1960State how many different values can be represented using 5 bits, and explain your reasoning.
  7. 7th April 1960State what LAN stands for.
  8. 8th April 1960A 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.
  9. 9th April 1960An 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.
  10. 10th April 1960Which CPU register holds the address of the next instruction to be fetched?
  11. 11th April 1960Distinguish between the network security threats known as phishing and pharming.
  12. 12th April 1960An array named temps holds 12 values. State the index of the first item and the index of the last item.
  13. 13th April 1960A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  14. 14th April 1960A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  15. 15th April 1960A 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.
  16. 16th April 1960State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  17. 17th April 1960State the key difference between a procedure and a function.
  18. 18th April 1960Give one example of an optical secondary storage device.
  19. 19th April 1960State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  20. 20th April 1960State the term used for realistic data that a program would be expected to handle during normal use.
  21. 21st April 1960Give one advantage of a relational database over a flat-file database.
  22. 22nd April 1960State the difference between lossy and lossless compression.
  23. 23rd April 1960State the condition that must be met before a binary search can be used on an array.
  24. 24th April 1960A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
  25. 25th April 1960Convert the hexadecimal number 3F to denary.
  26. 26th April 1960Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  27. 27th April 1960State why a program written in a high level language must be translated.
  28. 28th April 1960Convert the denary number 45 to hexadecimal.
  29. 29th April 1960What does the acronym CPU stand for?
  30. 30th April 1960State what the term malware means.