Daily Practice · GCSE Computer Science
May 1973 5-a-day
Every sheet in May 1973
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st May 1973State the three stages of the fetch-decode-execute cycle in the order they occur.
- 2nd May 1973State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 3rd May 1973Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 4th May 1973Define the term 'pixel'.
- 5th May 1973Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 6th May 1973Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 7th May 1973Evaluate the expression 23 DIV 4.
- 8th May 1973State the correct order of the three operations used to read data from a text file.
- 9th May 1973A 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.
- 10th May 1973Name the four layers of the TCP/IP model in order from the one closest to the user.
- 11th May 1973A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 12th May 1973A 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.
- 13th May 1973A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 14th May 1973An 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.
- 15th May 1973Complete: NOT 0 = ?
- 16th May 1973Convert the denary number 200 to hexadecimal, showing your working.
- 17th May 1973State what LAN stands for.
- 18th May 1973A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.
- 19th May 1973An 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.
- 20th May 1973Which CPU register holds the address of the next instruction to be fetched?
- 21st May 1973Distinguish between the network security threats known as phishing and pharming.
- 22nd May 1973An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 23rd May 1973A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 24th May 1973A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 25th May 1973A 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.
- 26th May 1973State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 27th May 1973State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
- 28th May 1973Give one example of an optical secondary storage device.
- 29th May 1973State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 30th May 1973State the term used for realistic data that a program would be expected to handle during normal use.
- 31st May 1973Define the term 'primary key' as used in a database table.