Daily Practice · GCSE Computer Science
September 1983 5-a-day
Every sheet in September 1983
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 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.
- 2nd September 1983Complete: NOT 0 = ?
- 3rd September 1983Convert the denary number 39 to an 8-bit binary number, showing your working.
- 4th September 1983State what LAN stands for.
- 5th September 1983Explain why an interpreter is often preferred while a program is being written.
- 6th September 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.
- 7th September 1983Which CPU register holds the address of the next instruction to be fetched?
- 8th September 1983Distinguish between the network security threats known as phishing and pharming.
- 9th September 1983A 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.
- 10th September 1983A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 11th September 1983A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 12th September 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.
- 13th September 1983State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 14th September 1983Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 15th September 1983Give one example of an optical secondary storage device.
- 16th September 1983State the layer that IP operates in, and describe its job.
- 17th September 1983State the term used for realistic data that a program would be expected to handle during normal use.
- 18th September 1983A table called members has fields memberId, firstName, lastName and joinYear. Write an SQL statement that adds a new record with memberId 12, firstName 'Priya', lastName 'Shah' and joinYear 2026.
- 19th September 1983State the difference between lossy and lossless compression.
- 20th September 1983State the condition that must be met before a binary search can be used on an array.
- 21st September 1983A 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.
- 22nd September 1983Convert the hexadecimal number FF to an 8-bit binary number.
- 23rd September 1983Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 24th September 1983Describe what syntax highlighting is and how it helps a programmer.
- 25th September 1983Convert the denary number 45 to hexadecimal.
- 26th September 1983What does the acronym CPU stand for?
- 27th September 1983State what the term malware means.
- 28th September 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).
- 29th September 1983An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
- 30th September 1983Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?