Daily Practice · GCSE Computer Science
January 2022 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in January 2022, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in January 2022
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 2022Define the term 'interrupt' as used to describe a signal received by a CPU.
- 2nd January 2022An array called items contains [12, 45, 7, 30, 19] at indices 0 to 4. Describe how a linear search would locate the value 30, stating the number of comparisons needed.
- 3rd January 2022Evaluate X = NOT A AND B when A = 0 and B = 1.
- 4th January 2022Convert the hexadecimal number FF to an 8-bit binary number.
- 5th January 2022Give one advantage of a star topology compared with a mesh topology.
- 6th January 2022Give one advantage and one disadvantage of using a compiler.
- 7th January 2022Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 8th January 2022State the three stages of the fetch-decode-execute cycle in the order they occur.
- 9th January 2022State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 10th January 2022Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 11th January 2022Define the term 'pixel'.
- 12th January 2022Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 13th January 2022Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 14th January 2022Evaluate the expression 23 DIV 4.
- 15th January 2022State the correct order of the three operations used to read data from a text file.
- 16th January 2022A 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.
- 17th January 2022A 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?
- 18th January 2022A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 19th January 2022A 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.
- 20th January 2022A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 21st January 2022An 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.
- 22nd January 2022Complete: NOT 0 = ?
- 23rd January 2022Convert the denary number 200 to hexadecimal, showing your working.
- 24th January 2022State what LAN stands for.
- 25th January 2022Name the translator used for assembly language and describe how it differs from a compiler.
- 26th January 2022An 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.
- 27th January 2022Which CPU register holds the address of the next instruction to be fetched?
- 28th January 2022Distinguish between the network security threats known as phishing and pharming.
- 29th January 2022Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 30th January 2022A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 31st January 2022A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.