Daily Practice · GCSE Computer Science
August 1969 5-a-day
Every sheet in August 1969
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1969Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 2nd August 1969State the three stages of the fetch-decode-execute cycle in the order they occur.
- 3rd August 1969State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 4th August 1969Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 5th August 1969Define the term 'pixel'.
- 6th August 1969Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 7th August 1969Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 8th August 1969Evaluate the expression 23 DIV 4.
- 9th August 1969State the correct order of the three operations used to read data from a text file.
- 10th August 1969A 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.
- 11th August 1969A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
- 12th August 1969A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 13th August 1969A 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.
- 14th August 1969A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 15th August 1969An 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.
- 16th August 1969Complete: NOT 0 = ?
- 17th August 1969Convert the denary number 200 to hexadecimal, showing your working.
- 18th August 1969State what LAN stands for.
- 19th August 1969Name the translator used for assembly language and describe how it differs from a compiler.
- 20th August 1969An 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.
- 21st August 1969Which CPU register holds the address of the next instruction to be fetched?
- 22nd August 1969Distinguish between the network security threats known as phishing and pharming.
- 23rd August 1969Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 24th August 1969A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 25th August 1969A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 26th August 1969A 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.
- 27th August 1969State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 28th August 1969State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
- 29th August 1969Give one example of an optical secondary storage device.
- 30th August 1969Define the term protocol.
- 31st August 1969State the term used for realistic data that a program would be expected to handle during normal use.