Daily Practice · GCSE Computer Science
November 1965 5-a-day
Every sheet in November 1965
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 1965Explain why an interpreter is often preferred while a program is being written.
- 2nd November 1965Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 3rd November 1965State the three stages of the fetch-decode-execute cycle in the order they occur.
- 4th November 1965State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 5th November 1965A 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.
- 6th November 1965Define the term 'pixel'.
- 7th November 1965Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 8th November 1965Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 9th November 1965Evaluate the expression 23 DIV 4.
- 10th November 1965State the correct order of the three operations used to read data from a text file.
- 11th November 1965A 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.
- 12th November 1965State the layer that IP operates in, and describe its job.
- 13th November 1965A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 14th November 1965A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
- 15th November 1965A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 16th November 1965An 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.
- 17th November 1965Complete: NOT 0 = ?
- 18th November 1965Convert the denary number 200 to hexadecimal, showing your working.
- 19th November 1965State what LAN stands for.
- 20th November 1965Describe what syntax highlighting is and how it helps a programmer.
- 21st November 1965An 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.
- 22nd November 1965Which CPU register holds the address of the next instruction to be fetched?
- 23rd November 1965Distinguish between the network security threats known as phishing and pharming.
- 24th November 1965Trace 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).
- 25th November 1965A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 26th November 1965A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 27th November 1965A 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.
- 28th November 1965State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 29th November 1965State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
- 30th November 1965Give one example of an optical secondary storage device.