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Daily Practice · GCSE Computer Science

December 1976 5-a-day

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December 1976

31 sheets · 155 questions · GCSE

December 1976 compilationAll answers

Every sheet in December 1976

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

  1. 1st December 1976Convert the denary number 5 to a 4-bit binary number.
  2. 2nd December 1976A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  3. 3rd December 1976A 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.
  4. 4th December 1976Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  5. 5th December 1976A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  6. 6th December 1976State the type of program that is typically stored in ROM.
  7. 7th December 1976State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  8. 8th December 1976A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  9. 9th December 1976State the key difference between a procedure and a function.
  10. 10th December 1976State the typical maximum capacity of a single-layer DVD.
  11. 11th December 1976Define the term protocol.
  12. 12th December 1976State what is meant by a syntax error.
  13. 13th December 1976Give one advantage of a relational database over a flat-file database.
  14. 14th December 1976What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  15. 15th December 1976Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  16. 16th December 1976Given P = 0 and Q = 1, state the value of P OR Q.
  17. 17th December 1976Convert the hexadecimal number 3F to denary.
  18. 18th December 1976A 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.
  19. 19th December 1976Explain the purpose of a breakpoint.
  20. 20th December 1976Convert the 4-bit binary number 1101 to denary.
  21. 21st December 1976Two 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.
  22. 22nd December 1976State why an organisation might employ penetration testers to test its network.
  23. 23rd December 1976Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  24. 24th December 1976State one example of a file format that commonly uses lossy compression.
  25. 25th December 1976State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  26. 26th December 1976State whether the source code of proprietary (closed source) software is normally available for the public to view.
  27. 27th December 1976Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  28. 28th December 1976A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
  29. 29th December 1976Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  30. 30th December 1976Name the four layers of the TCP/IP model in order from the one closest to the user.
  31. 31st December 1976Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.