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Daily Practice · GCSE Computer Science

March 1983 5-a-day

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March 1983

31 sheets · 155 questions · GCSE

March 1983 compilationAll answers

Every sheet in March 1983

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 1983A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
  2. 2nd March 1983A 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.
  3. 3rd March 1983Explain why a running maximum should be initialised to the first element of the array rather than to 0.
  4. 4th March 1983A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
  5. 5th March 1983State the type of program that is typically stored in ROM.
  6. 6th March 1983State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
  7. 7th March 1983A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
  8. 8th March 1983State the key difference between a procedure and a function.
  9. 9th March 1983State the typical maximum capacity of a single-layer DVD.
  10. 10th March 1983Name the four layers of the TCP/IP model in order from the one closest to the user.
  11. 11th March 1983State what is meant by a syntax error.
  12. 12th March 1983Give one advantage of a relational database over a flat-file database.
  13. 13th March 1983What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
  14. 14th March 1983Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
  15. 15th March 1983Given P = 0 and Q = 1, state the value of P OR Q.
  16. 16th March 1983Convert the hexadecimal number 3F to denary.
  17. 17th March 1983A 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.
  18. 18th March 1983A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.
  19. 19th March 1983Convert the 4-bit binary number 1101 to denary.
  20. 20th March 1983Two 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.
  21. 21st March 1983State why an organisation might employ penetration testers to test its network.
  22. 22nd March 1983An array named temps holds 12 values. State the index of the first item and the index of the last item.
  23. 23rd March 1983State one example of a file format that commonly uses lossy compression.
  24. 24th March 1983State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
  25. 25th March 1983State whether the source code of proprietary (closed source) software is normally available for the public to view.
  26. 26th March 1983Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
  27. 27th March 1983A 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.
  28. 28th March 1983Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
  29. 29th March 1983State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
  30. 30th March 1983Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
  31. 31st March 1983A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.