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Daily Practice · GCSE Computer Science

April 1956 5-a-day

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April 1956

30 sheets · 150 questions · GCSE

April 1956 compilationAll answers

Every sheet in April 1956

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 1956State the difference between lossy and lossless compression.
  2. 2nd April 1956State the condition that must be met before a binary search can be used on an array.
  3. 3rd April 1956A 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.
  4. 4th April 1956Convert the hexadecimal number FF to an 8-bit binary number.
  5. 5th April 1956Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
  6. 6th April 1956A 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.
  7. 7th April 1956Convert the denary number 45 to hexadecimal.
  8. 8th April 1956What does the acronym CPU stand for?
  9. 9th April 1956State what the term malware means.
  10. 10th April 1956An array named temps holds 12 values. State the index of the first item and the index of the last item.
  11. 11th April 1956An 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).
  12. 12th April 1956Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
  13. 13th April 1956Which piece of UK legislation controls how organisations must store and use people's personal data?
  14. 14th April 1956Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  15. 15th April 1956State the correct order of the three operations used to read data from a text file.
  16. 16th April 1956Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  17. 17th April 1956State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  18. 18th April 1956A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  19. 19th April 1956A 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.
  20. 20th April 1956State one function carried out by the operating system of a computer.
  21. 21st April 1956In computational thinking, what is meant by the term 'decomposition'?
  22. 22nd April 1956Given A = 1 and B = 1, state the value of A AND B.
  23. 23rd April 1956Convert the denary number 200 to hexadecimal, showing your working.
  24. 24th April 1956Define a peer-to-peer network.
  25. 25th April 1956State why a program written in a high level language must be translated.
  26. 26th April 1956Convert the denary number 5 to a 4-bit binary number.
  27. 27th April 1956A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  28. 28th April 1956A 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.
  29. 29th April 1956Describe what a nested loop does when it processes a 2D array.
  30. 30th April 1956A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.