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Daily Practice · GCSE Computer Science

January 1998 - GCSE Computer Science 5-a-day

← Today's GCSE Computer Science sheet

January 1998

31 sheets · 155 questions · GCSE

January 1998 compilationAll answers

Every sheet in January 1998

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 1998Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
  2. 2nd January 1998Evaluate the expression 23 DIV 4.
  3. 3rd January 1998A 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 January 1998A 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 January 1998A 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?
  6. 6th January 1998A '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 January 1998A 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 January 1998A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
  9. 9th January 1998An 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 January 1998Complete: NOT 0 = ?
  11. 11th January 1998Convert the 8-bit binary number 01011010 to denary.
  12. 12th January 1998State what LAN stands for.
  13. 13th January 1998Name the translator used for assembly language and describe how it differs from a compiler.
  14. 14th January 1998An 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 January 1998Which CPU register holds the address of the next instruction to be fetched?
  16. 16th January 1998Distinguish between the network security threats known as phishing and pharming.
  17. 17th January 1998Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
  18. 18th January 1998A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
  19. 19th January 1998A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
  20. 20th January 1998A 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 January 1998State 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 January 1998Write 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 January 1998Give one example of an optical secondary storage device.
  24. 24th January 1998Define the term protocol.
  25. 25th January 1998State the term used for realistic data that a program would be expected to handle during normal use.
  26. 26th January 1998State what a foreign key is used for.
  27. 27th January 1998State the difference between lossy and lossless compression.
  28. 28th January 1998State the condition that must be met before a binary search can be used on an array.
  29. 29th January 1998A 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 January 1998A 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 January 1998Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?