Daily Practice · GCSE Computer Science
August 1964 5-a-day
Every sheet in August 1964
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1964Give one advantage of a star topology compared with a mesh topology.
- 2nd August 1964Explain the purpose of a breakpoint.
- 3rd August 1964Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 4th August 1964State the three stages of the fetch-decode-execute cycle in the order they occur.
- 5th August 1964State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 6th August 1964Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 7th August 1964Define the term 'pixel'.
- 8th August 1964Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 9th August 1964Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 10th August 1964Evaluate the expression 23 DIV 4.
- 11th August 1964State the correct order of the three operations used to read data from a text file.
- 12th August 1964A 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.
- 13th August 1964Name the four layers of the TCP/IP model in order from the one closest to the user.
- 14th August 1964A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 15th August 1964A 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.
- 16th August 1964A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 17th August 1964An 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.
- 18th August 1964Complete: NOT 0 = ?
- 19th August 1964Convert the denary number 200 to hexadecimal, showing your working.
- 20th August 1964State what LAN stands for.
- 21st August 1964A 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.
- 22nd August 1964An 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.
- 23rd August 1964Which CPU register holds the address of the next instruction to be fetched?
- 24th August 1964Distinguish between the network security threats known as phishing and pharming.
- 25th August 1964An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 26th August 1964A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 27th August 1964A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 28th August 1964A 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.
- 29th August 1964State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 30th August 1964State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
- 31st August 1964Give one example of an optical secondary storage device.