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Daily Practice · GCSE Computer Science

October 1976 5-a-day

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October 1976

31 sheets · 155 questions · GCSE

October 1976 compilationAll answers

Every sheet in October 1976

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

  1. 1st October 1976Evaluate X = NOT A AND B when A = 0 and B = 1.
  2. 2nd October 1976Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
  3. 3rd October 1976Give one advantage of a star topology compared with a mesh topology.
  4. 4th October 1976Explain why an interpreter is often preferred while a program is being written.
  5. 5th October 1976Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
  6. 6th October 1976State the three stages of the fetch-decode-execute cycle in the order they occur.
  7. 7th October 1976State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
  8. 8th October 1976A 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.
  9. 9th October 1976Define the term 'pixel'.
  10. 10th October 1976Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
  11. 11th October 1976Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  12. 12th October 1976Evaluate the expression 23 DIV 4.
  13. 13th October 1976A 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.
  14. 14th October 1976A 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.
  15. 15th October 1976State the layer that IP operates in, and describe its job.
  16. 16th October 1976A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  17. 17th October 1976A 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;
  18. 18th October 1976A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  19. 19th October 1976An 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.
  20. 20th October 1976Complete: NOT 0 = ?
  21. 21st October 1976Convert the 8-bit binary number 01011010 to denary.
  22. 22nd October 1976State what LAN stands for.
  23. 23rd October 1976Describe what syntax highlighting is and how it helps a programmer.
  24. 24th October 1976An 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.
  25. 25th October 1976Which CPU register holds the address of the next instruction to be fetched?
  26. 26th October 1976Distinguish between the network security threats known as phishing and pharming.
  27. 27th October 1976Trace 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).
  28. 28th October 1976A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  29. 29th October 1976A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  30. 30th October 1976A 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.
  31. 31st October 1976State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.