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Daily Practice · GCSE Computer Science

January 1990 5-a-day

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January 1990

31 sheets · 155 questions · GCSE

January 1990 compilationAll answers

Every sheet in January 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 January 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?
  2. 2nd January 1990A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
  3. 3rd January 1990A 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.
  4. 4th January 1990State one function carried out by the operating system of a computer.
  5. 5th January 1990In computational thinking, what is meant by the term 'decomposition'?
  6. 6th January 1990Given A = 1 and B = 1, state the value of A AND B.
  7. 7th January 1990Convert the denary number 200 to hexadecimal, showing your working.
  8. 8th January 1990Define a peer-to-peer network.
  9. 9th January 1990Name the translator used for assembly language and describe how it differs from a compiler.
  10. 10th January 1990Convert the denary number 5 to a 4-bit binary number.
  11. 11th January 1990A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  12. 12th January 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.
  13. 13th January 1990Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  14. 14th January 1990A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  15. 15th January 1990State the type of program that is typically stored in ROM.
  16. 16th January 1990State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  17. 17th January 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.
  18. 18th January 1990State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
  19. 19th January 1990State the typical maximum capacity of a single-layer DVD.
  20. 20th January 1990Define the term protocol.
  21. 21st January 1990State what is meant by a syntax error.
  22. 22nd January 1990Define the term 'primary key' as used in a database table.
  23. 23rd January 1990What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  24. 24th January 1990Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  25. 25th January 1990Given P = 0 and Q = 1, state the value of P OR Q.
  26. 26th January 1990Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  27. 27th January 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.
  28. 28th January 1990Explain the purpose of a breakpoint.
  29. 29th January 1990Convert the 4-bit binary number 1101 to denary.
  30. 30th January 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.
  31. 31st January 1990State why an organisation might employ penetration testers to test its network.