Daily Practice · GCSE Computer Science
June 1996 - GCSE Computer Science 5-a-day
Every sheet in June 1996
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 1996A 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.
- 2nd June 1996Give one advantage of a star topology compared with a mesh topology.
- 3rd June 1996Explain why an interpreter is often preferred while a program is being written.
- 4th June 1996Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 5th June 1996State the three stages of the fetch-decode-execute cycle in the order they occur.
- 6th June 1996State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 7th June 1996A 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.
- 8th June 1996Define the term 'pixel'.
- 9th June 1996Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 10th June 1996Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 11th June 1996Evaluate the expression 23 DIV 4.
- 12th June 1996State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 13th June 1996A 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.
- 14th June 1996State the layer that IP operates in, and describe its job.
- 15th June 1996A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 16th June 1996A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
- 17th June 1996A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 18th June 1996An 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.
- 19th June 1996Complete: NOT 0 = ?
- 20th June 1996State how many different values can be represented using 5 bits, and explain your reasoning.
- 21st June 1996State what LAN stands for.
- 22nd June 1996Describe what syntax highlighting is and how it helps a programmer.
- 23rd June 1996An 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.
- 24th June 1996Which CPU register holds the address of the next instruction to be fetched?
- 25th June 1996Distinguish between the network security threats known as phishing and pharming.
- 26th June 1996Trace 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).
- 27th June 1996A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 28th June 1996A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 29th June 1996A 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.
- 30th June 1996State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.