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Daily Practice · GCSE Computer Science

March 1973 5-a-day

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March 1973

31 sheets · 155 questions · GCSE

March 1973 compilationAll answers

Every sheet in March 1973

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

  1. 1st March 1973State how many different values can be represented using 5 bits, and explain your reasoning.
  2. 2nd March 1973Define a peer-to-peer network.
  3. 3rd March 1973Describe what syntax highlighting is and how it helps a programmer.
  4. 4th March 1973Convert the denary number 5 to a 4-bit binary number.
  5. 5th March 1973A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  6. 6th March 1973A 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 March 1973Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
  8. 8th March 1973A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  9. 9th March 1973State the type of program that is typically stored in ROM.
  10. 10th March 1973State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  11. 11th March 1973A 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 March 1973State the key difference between a procedure and a function.
  13. 13th March 1973State the typical maximum capacity of a single-layer DVD.
  14. 14th March 1973Explain the role of TCP when a large file is downloaded.
  15. 15th March 1973State what is meant by a syntax error.
  16. 16th March 1973Give one advantage of a relational database over a flat-file database.
  17. 17th March 1973What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  18. 18th March 1973Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  19. 19th March 1973Given P = 0 and Q = 1, state the value of P OR Q.
  20. 20th March 1973Convert the hexadecimal number 3F to denary.
  21. 21st March 1973A 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 March 1973Give one advantage and one disadvantage of using a compiler.
  23. 23rd March 1973Convert the 4-bit binary number 1101 to denary.
  24. 24th March 1973Two 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 March 1973State why an organisation might employ penetration testers to test its network.
  26. 26th March 1973Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  27. 27th March 1973State one example of a file format that commonly uses lossy compression.
  28. 28th March 1973State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  29. 29th March 1973State whether the source code of proprietary (closed source) software is normally available for the public to view.
  30. 30th March 1973Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  31. 31st March 1973A 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.