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Daily Practice · GCSE Computer Science

September 1970 5-a-day

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September 1970

30 sheets · 150 questions · GCSE

September 1970 compilationAll answers

Every sheet in September 1970

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

  1. 1st September 1970State how many different values can be represented using 5 bits, and explain your reasoning.
  2. 2nd September 1970Define a peer-to-peer network.
  3. 3rd September 1970Give one advantage and one disadvantage of using a compiler.
  4. 4th September 1970Convert the denary number 5 to a 4-bit binary number.
  5. 5th September 1970A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  6. 6th September 1970A 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.
  7. 7th September 1970Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  8. 8th September 1970A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  9. 9th September 1970State the type of program that is typically stored in ROM.
  10. 10th September 1970State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  11. 11th September 1970A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  12. 12th September 1970State the key difference between a procedure and a function.
  13. 13th September 1970State the typical maximum capacity of a single-layer DVD.
  14. 14th September 1970A 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?
  15. 15th September 1970State what is meant by a syntax error.
  16. 16th September 1970Give one advantage of a relational database over a flat-file database.
  17. 17th September 1970What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  18. 18th September 1970Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  19. 19th September 1970Given P = 0 and Q = 1, state the value of P OR Q.
  20. 20th September 1970Convert the hexadecimal number 3F to denary.
  21. 21st September 1970A 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.
  22. 22nd September 1970Name the translator used for assembly language and describe how it differs from a compiler.
  23. 23rd September 1970Convert the 4-bit binary number 1101 to denary.
  24. 24th September 1970Two 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.
  25. 25th September 1970State why an organisation might employ penetration testers to test its network.
  26. 26th September 1970Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  27. 27th September 1970State one example of a file format that commonly uses lossy compression.
  28. 28th September 1970State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  29. 29th September 1970State whether the source code of proprietary (closed source) software is normally available for the public to view.
  30. 30th September 1970Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.