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Daily Practice · GCSE Computer Science

July 1987 5-a-day

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July 1987

31 sheets · 155 questions · GCSE

July 1987 compilationAll answers

Every sheet in July 1987

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

  1. 1st July 1987Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
  2. 2nd July 1987State the correct order of the three operations used to read data from a text file.
  3. 3rd July 1987Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
  4. 4th July 1987Define the term protocol.
  5. 5th July 1987A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  6. 6th July 1987A 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.
  7. 7th July 1987State one function carried out by the operating system of a computer.
  8. 8th July 1987In computational thinking, what is meant by the term 'decomposition'?
  9. 9th July 1987Given A = 1 and B = 1, state the value of A AND B.
  10. 10th July 1987Convert the denary number 200 to hexadecimal, showing your working.
  11. 11th July 1987Define a peer-to-peer network.
  12. 12th July 1987Explain the purpose of a breakpoint.
  13. 13th July 1987Convert the denary number 5 to a 4-bit binary number.
  14. 14th July 1987A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  15. 15th July 1987A 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.
  16. 16th July 1987Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  17. 17th July 1987A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  18. 18th July 1987State the type of program that is typically stored in ROM.
  19. 19th July 1987State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  20. 20th July 1987A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  21. 21st July 1987State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  22. 22nd July 1987State the typical maximum capacity of a single-layer DVD.
  23. 23rd July 1987Name the four layers of the TCP/IP model in order from the one closest to the user.
  24. 24th July 1987State what is meant by a syntax error.
  25. 25th July 1987Define the term 'primary key' as used in a database table.
  26. 26th July 1987What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  27. 27th July 1987Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  28. 28th July 1987Given P = 0 and Q = 1, state the value of P OR Q.
  29. 29th July 1987Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  30. 30th July 1987A 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.
  31. 31st July 1987A 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.