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Daily Practice · GCSE Computer Science

July 2000 - GCSE Computer Science 5-a-day

Every GCSE Computer Science sheet published in July 2000, with answers. Systems, data representation, networks, algorithms and programming.

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July 2000

31 sheets · 155 questions · GCSE

July 2000 compilationAll answers

Every sheet in July 2000

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

  1. 1st July 2000Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  2. 2nd July 2000Evaluate the expression 23 DIV 4.
  3. 3rd July 2000A 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.
  4. 4th July 2000A 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.
  5. 5th July 2000Explain the role of TCP when a large file is downloaded.
  6. 6th July 2000A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
  7. 7th July 2000A 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;
  8. 8th July 2000A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  9. 9th July 2000An 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.
  10. 10th July 2000Complete: NOT 0 = ?
  11. 11th July 2000Convert the 8-bit binary number 01011010 to denary.
  12. 12th July 2000State what LAN stands for.
  13. 13th July 2000Give one advantage and one disadvantage of using a compiler.
  14. 14th July 2000An 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.
  15. 15th July 2000Which CPU register holds the address of the next instruction to be fetched?
  16. 16th July 2000Distinguish between the network security threats known as phishing and pharming.
  17. 17th July 2000Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
  18. 18th July 2000A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  19. 19th July 2000A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  20. 20th July 2000A 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.
  21. 21st July 2000State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
  22. 22nd July 2000Write 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.
  23. 23rd July 2000Give one example of an optical secondary storage device.
  24. 24th July 2000A 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?
  25. 25th July 2000State the term used for realistic data that a program would be expected to handle during normal use.
  26. 26th July 2000State what a foreign key is used for.
  27. 27th July 2000State the difference between lossy and lossless compression.
  28. 28th July 2000State the condition that must be met before a binary search can be used on an array.
  29. 29th July 2000A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
  30. 30th July 2000A 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.
  31. 31st July 2000Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?