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Daily Practice · GCSE Computer Science

April 1957 5-a-day

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April 1957

30 sheets · 150 questions · GCSE

April 1957 compilationAll answers

Every sheet in April 1957

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

  1. 1st April 1957Define a peer-to-peer network.
  2. 2nd April 1957Name the translator used for assembly language and describe how it differs from a compiler.
  3. 3rd April 1957Convert the denary number 5 to a 4-bit binary number.
  4. 4th April 1957A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  5. 5th April 1957A 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 April 1957Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  7. 7th April 1957A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  8. 8th April 1957State the type of program that is typically stored in ROM.
  9. 9th April 1957State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  10. 10th April 1957A 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 April 1957Write 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 April 1957State the typical maximum capacity of a single-layer DVD.
  13. 13th April 1957Define the term protocol.
  14. 14th April 1957State what is meant by a syntax error.
  15. 15th April 1957State what a foreign key is used for.
  16. 16th April 1957What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  17. 17th April 1957Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  18. 18th April 1957Given P = 0 and Q = 1, state the value of P OR Q.
  19. 19th April 1957A 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 April 1957A 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 April 1957Explain the purpose of a breakpoint.
  22. 22nd April 1957Convert the 4-bit binary number 1101 to denary.
  23. 23rd April 1957Two 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 April 1957State why an organisation might employ penetration testers to test its network.
  25. 25th April 1957Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  26. 26th April 1957State one example of a file format that commonly uses lossy compression.
  27. 27th April 1957State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  28. 28th April 1957State whether the source code of proprietary (closed source) software is normally available for the public to view.
  29. 29th April 1957Write 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 April 1957State the value returned by LENGTH(word) if word stores the string 'Computer'.