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Daily Practice · GCSE Computer Science

October 1953 5-a-day

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October 1953

31 sheets · 155 questions · GCSE

October 1953 compilationAll answers

Every sheet in October 1953

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

  1. 1st October 1953A table called members has fields memberId, firstName, lastName and joinYear. Write an SQL statement that adds a new record with memberId 12, firstName 'Priya', lastName 'Shah' and joinYear 2026.
  2. 2nd October 1953State the difference between lossy and lossless compression.
  3. 3rd October 1953State the condition that must be met before a binary search can be used on an array.
  4. 4th October 1953A 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.
  5. 5th October 1953Convert the hexadecimal number FF to an 8-bit binary number.
  6. 6th October 1953Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  7. 7th October 1953State why a program written in a high level language must be translated.
  8. 8th October 1953Convert the denary number 45 to hexadecimal.
  9. 9th October 1953What does the acronym CPU stand for?
  10. 10th October 1953State what the term malware means.
  11. 11th October 1953Describe what a nested loop does when it processes a 2D array.
  12. 12th October 1953An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
  13. 13th October 1953Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  14. 14th October 1953Which piece of UK legislation controls how organisations must store and use people's personal data?
  15. 15th October 1953Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  16. 16th October 1953State the correct order of the three operations used to read data from a text file.
  17. 17th October 1953Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  18. 18th October 1953Give two reasons why network communication is divided into layers.
  19. 19th October 1953A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  20. 20th October 1953A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
  21. 21st October 1953State one function carried out by the operating system of a computer.
  22. 22nd October 1953In computational thinking, what is meant by the term 'decomposition'?
  23. 23rd October 1953Given A = 1 and B = 1, state the value of A AND B.
  24. 24th October 1953Convert the denary number 200 to hexadecimal, showing your working.
  25. 25th October 1953Define a peer-to-peer network.
  26. 26th October 1953Explain why an interpreter is often preferred while a program is being written.
  27. 27th October 1953Convert the denary number 5 to a 4-bit binary number.
  28. 28th October 1953A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  29. 29th October 1953A simple cipher shifts every letter 2 places forward in the alphabet, wrapping around so Y becomes A and Z becomes B. Encrypt the plaintext CAT using this cipher.
  30. 30th October 1953A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
  31. 31st October 1953A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.