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Daily Practice · GCSE Computer Science

May 1990 5-a-day

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May 1990

31 sheets · 155 questions · GCSE

May 1990 compilationAll answers

Every sheet in May 1990

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

  1. 1st May 1990Convert the denary number 39 to an 8-bit binary number, showing your working.
  2. 2nd May 1990Define a peer-to-peer network.
  3. 3rd May 1990Give one advantage and one disadvantage of using a compiler.
  4. 4th May 1990Convert the denary number 5 to a 4-bit binary number.
  5. 5th May 1990A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  6. 6th May 1990A 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.
  7. 7th May 1990Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  8. 8th May 1990A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  9. 9th May 1990State the type of program that is typically stored in ROM.
  10. 10th May 1990State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  11. 11th May 1990A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  12. 12th May 1990Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  13. 13th May 1990State the typical maximum capacity of a single-layer DVD.
  14. 14th May 1990A 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?
  15. 15th May 1990State what is meant by a syntax error.
  16. 16th May 1990A 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.
  17. 17th May 1990What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  18. 18th May 1990Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  19. 19th May 1990Given P = 0 and Q = 1, state the value of P OR Q.
  20. 20th May 1990Convert the hexadecimal number FF to an 8-bit binary number.
  21. 21st May 1990A network administrator is connecting 10 computers in a server room. Calculate the number of cables needed for a full mesh topology, and state the number needed for a star topology with one central switch.
  22. 22nd May 1990Name the translator used for assembly language and describe how it differs from a compiler.
  23. 23rd May 1990Convert the 4-bit binary number 1101 to denary.
  24. 24th May 1990Two CPUs are compared for a task optimised for multiple cores: CPU A has 2 cores at 4.2 GHz; CPU B has 6 cores at 3.0 GHz. Explain which CPU is likely to perform better for this task.
  25. 25th May 1990State why an organisation might employ penetration testers to test its network.
  26. 26th May 1990Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  27. 27th May 1990State one example of a file format that commonly uses lossy compression.
  28. 28th May 1990State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  29. 29th May 1990State whether the source code of proprietary (closed source) software is normally available for the public to view.
  30. 30th May 1990Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  31. 31st May 1990State the correct order of the three operations used to read data from a text file.