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Daily Practice · GCSE Computer Science

July 1958 5-a-day

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July 1958

31 sheets · 155 questions · GCSE

July 1958 compilationAll answers

Every sheet in July 1958

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

  1. 1st July 1958Define a peer-to-peer network.
  2. 2nd July 1958State why a program written in a high level language must be translated.
  3. 3rd July 1958Convert the denary number 5 to a 4-bit binary number.
  4. 4th July 1958A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  5. 5th July 1958A 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.
  6. 6th July 1958Describe what a nested loop does when it processes a 2D array.
  7. 7th July 1958A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  8. 8th July 1958State the type of program that is typically stored in ROM.
  9. 9th July 1958State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  10. 10th July 1958A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  11. 11th July 1958Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
  12. 12th July 1958State the typical maximum capacity of a single-layer DVD.
  13. 13th July 1958Give two reasons why network communication is divided into layers.
  14. 14th July 1958State what is meant by a syntax error.
  15. 15th July 1958State what a foreign key is used for.
  16. 16th July 1958What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  17. 17th July 1958Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  18. 18th July 1958Given P = 0 and Q = 1, state the value of P OR Q.
  19. 19th July 1958A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
  20. 20th July 1958A 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.
  21. 21st July 1958Explain why an interpreter is often preferred while a program is being written.
  22. 22nd July 1958Convert the 4-bit binary number 1101 to denary.
  23. 23rd July 1958Two 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.
  24. 24th July 1958State why an organisation might employ penetration testers to test its network.
  25. 25th July 1958A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
  26. 26th July 1958State one example of a file format that commonly uses lossy compression.
  27. 27th July 1958State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  28. 28th July 1958State whether the source code of proprietary (closed source) software is normally available for the public to view.
  29. 29th July 1958Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  30. 30th July 1958State the value returned by LENGTH(word) if word stores the string 'Computer'.
  31. 31st July 1958Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.