Revision Library
/Subjects/Computer Science/Daily Practice
Daily Practice · GCSE Computer Science

February 1994 - GCSE Computer Science 5-a-day

← Today's GCSE Computer Science sheet

February 1994

28 sheets · 140 questions · GCSE

February 1994 compilationAll answers

Every sheet in February 1994

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

  1. 1st February 1994A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  2. 2nd February 1994A 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.
  3. 3rd February 1994Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  4. 4th February 1994A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  5. 5th February 1994State the type of program that is typically stored in ROM.
  6. 6th February 1994State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  7. 7th February 1994A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  8. 8th February 1994Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
  9. 9th February 1994State the typical maximum capacity of a single-layer DVD.
  10. 10th February 1994Name the four layers of the TCP/IP model in order from the one closest to the user.
  11. 11th February 1994State what is meant by a syntax error.
  12. 12th February 1994A 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.
  13. 13th February 1994What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  14. 14th February 1994Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  15. 15th February 1994Given P = 0 and Q = 1, state the value of P OR Q.
  16. 16th February 1994Convert the hexadecimal number FF to an 8-bit binary number.
  17. 17th February 1994A 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.
  18. 18th February 1994A 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.
  19. 19th February 1994Convert the 4-bit binary number 1101 to denary.
  20. 20th February 1994Two 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.
  21. 21st February 1994State why an organisation might employ penetration testers to test its network.
  22. 22nd February 1994An array named temps holds 12 values. State the index of the first item and the index of the last item.
  23. 23rd February 1994State one example of a file format that commonly uses lossy compression.
  24. 24th February 1994State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  25. 25th February 1994State whether the source code of proprietary (closed source) software is normally available for the public to view.
  26. 26th February 1994Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  27. 27th February 1994State the correct order of the three operations used to read data from a text file.
  28. 28th February 1994Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.