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Daily Practice · GCSE Computer Science

January 1959 5-a-day

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January 1959

31 sheets · 155 questions · GCSE

January 1959 compilationAll answers

Every sheet in January 1959

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 1959A '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 January 1959A 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 January 1959A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  4. 4th January 1959An 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 January 1959Complete: NOT 0 = ?
  6. 6th January 1959State how many different values can be represented using 5 bits, and explain your reasoning.
  7. 7th January 1959State what LAN stands for.
  8. 8th January 1959Give one advantage and one disadvantage of using a compiler.
  9. 9th January 1959An 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 January 1959Which CPU register holds the address of the next instruction to be fetched?
  11. 11th January 1959Distinguish between the network security threats known as phishing and pharming.
  12. 12th January 1959Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  13. 13th January 1959A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  14. 14th January 1959A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  15. 15th January 1959A 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 January 1959State 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 January 1959State the key difference between a procedure and a function.
  18. 18th January 1959Give one example of an optical secondary storage device.
  19. 19th January 1959A 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?
  20. 20th January 1959State the term used for realistic data that a program would be expected to handle during normal use.
  21. 21st January 1959Give one advantage of a relational database over a flat-file database.
  22. 22nd January 1959State the difference between lossy and lossless compression.
  23. 23rd January 1959State the condition that must be met before a binary search can be used on an array.
  24. 24th January 1959A 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 January 1959Convert the hexadecimal number 3F to denary.
  26. 26th January 1959Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  27. 27th January 1959Name the translator used for assembly language and describe how it differs from a compiler.
  28. 28th January 1959Convert the denary number 45 to hexadecimal.
  29. 29th January 1959What does the acronym CPU stand for?
  30. 30th January 1959State what the term malware means.
  31. 31st January 1959Explain what happens if a program tries to read index 5 of an array declared with 5 elements.