Daily Practice · GCSE Computer Science
June 2016 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in June 2016, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in June 2016
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 2016Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 2nd June 2016Evaluate the expression 23 DIV 4.
- 3rd June 2016State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 4th June 2016A 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.
- 5th June 2016Give two reasons why network communication is divided into layers.
- 6th June 2016A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 7th June 2016A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
- 8th June 2016A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 9th June 2016An 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.
- 10th June 2016Complete: NOT 0 = ?
- 11th June 2016State how many different values can be represented using 5 bits, and explain your reasoning.
- 12th June 2016State what LAN stands for.
- 13th June 2016Explain why an interpreter is often preferred while a program is being written.
- 14th June 2016An 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.
- 15th June 2016Which CPU register holds the address of the next instruction to be fetched?
- 16th June 2016Distinguish between the network security threats known as phishing and pharming.
- 17th June 2016A 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.
- 18th June 2016A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 19th June 2016A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 20th June 2016A 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.
- 21st June 2016State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 22nd June 2016State the key difference between a procedure and a function.
- 23rd June 2016Give one example of an optical secondary storage device.
- 24th June 2016State the layer that IP operates in, and describe its job.
- 25th June 2016State the term used for realistic data that a program would be expected to handle during normal use.
- 26th June 2016Give one advantage of a relational database over a flat-file database.
- 27th June 2016State the difference between lossy and lossless compression.
- 28th June 2016State the condition that must be met before a binary search can be used on an array.
- 29th June 2016A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
- 30th June 2016Convert the hexadecimal number 3F to denary.