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Daily Practice · GCSE Computer Science

January 1983 5-a-day

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January 1983

31 sheets · 155 questions · GCSE

January 1983 compilationAll answers

Every sheet in January 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 January 1983Describe what syntax highlighting is and how it helps a programmer.
  2. 2nd January 1983Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  3. 3rd January 1983State the three stages of the fetch-decode-execute cycle in the order they occur.
  4. 4th January 1983State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  5. 5th January 1983Trace 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).
  6. 6th January 1983Define the term 'pixel'.
  7. 7th January 1983Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  8. 8th January 1983Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  9. 9th January 1983Evaluate the expression 23 DIV 4.
  10. 10th January 1983A function is defined as: FUNCTION addTax(price) RETURN price x 1.2 ENDFUNCTION. Another line of code runs: total <- addTax(20) + addTax(30). Trace both function calls and state the final value of total.
  11. 11th January 1983A 1 TB hard disk drive costs 40 pounds. A 500 GB solid-state drive costs 60 pounds. Calculate the cost per gigabyte of each device, and state which is cheaper per GB. Use 1 TB = 1000 GB.
  12. 12th January 1983Explain the role of TCP when a large file is downloaded.
  13. 13th January 1983A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  14. 14th January 1983A table called staff has fields staffId, name, department and salary, storing these records: staffId | name | department | salary, 1 | Ben | Sales | 24000, 2 | Chloe | IT | 31000, 3 | Dan | Sales | 27000. State which staffId(s) would be returned by: SELECT staffId FROM staff WHERE department = 'Sales' AND salary > 25000;
  15. 15th January 1983A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  16. 16th January 1983An array contains [9, 2, 6], to be sorted using insertion sort. Show the state of the array after each new element has been inserted into its correct position.
  17. 17th January 1983Complete: NOT 0 = ?
  18. 18th January 1983Convert the 8-bit binary number 01011010 to denary.
  19. 19th January 1983State what LAN stands for.
  20. 20th January 1983Give one advantage and one disadvantage of using a compiler.
  21. 21st January 1983An 8-bit register stores the value 01100000 (denary 96). State the resulting 8-bit binary value after a left shift by 1 place, and state whether an overflow occurs.
  22. 22nd January 1983Which CPU register holds the address of the next instruction to be fetched?
  23. 23rd January 1983Distinguish between the network security threats known as phishing and pharming.
  24. 24th January 1983Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  25. 25th January 1983A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  26. 26th January 1983A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  27. 27th January 1983A streaming company records which shows each user watches and uses this to recommend similar shows. Explain one ethical concern this could raise, even if the company only uses the data to improve recommendations.
  28. 28th January 1983State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  29. 29th January 1983Write 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.
  30. 30th January 1983Give one example of an optical secondary storage device.
  31. 31st January 1983A 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?