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Daily Practice · GCSE Computer Science

June 1979 5-a-day

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June 1979

30 sheets · 150 questions · GCSE

June 1979 compilationAll answers

Every sheet in June 1979

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

  1. 1st June 1979Convert the denary number 5 to a 4-bit binary number.
  2. 2nd June 1979A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  3. 3rd June 1979A 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 June 1979Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  5. 5th June 1979A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  6. 6th June 1979State the type of program that is typically stored in ROM.
  7. 7th June 1979State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  8. 8th June 1979A 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 June 1979State the key difference between a procedure and a function.
  10. 10th June 1979State the typical maximum capacity of a single-layer DVD.
  11. 11th June 1979A 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?
  12. 12th June 1979State what is meant by a syntax error.
  13. 13th June 1979Give one advantage of a relational database over a flat-file database.
  14. 14th June 1979What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  15. 15th June 1979Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  16. 16th June 1979Given P = 0 and Q = 1, state the value of P OR Q.
  17. 17th June 1979Convert the hexadecimal number 3F to denary.
  18. 18th June 1979A 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 June 1979Name the translator used for assembly language and describe how it differs from a compiler.
  20. 20th June 1979Convert the 4-bit binary number 1101 to denary.
  21. 21st June 1979Two 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 June 1979State why an organisation might employ penetration testers to test its network.
  23. 23rd June 1979Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  24. 24th June 1979State one example of a file format that commonly uses lossy compression.
  25. 25th June 1979State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  26. 26th June 1979State whether the source code of proprietary (closed source) software is normally available for the public to view.
  27. 27th June 1979Write 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 June 1979A 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 June 1979Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  30. 30th June 1979Define the term protocol.