Daily Practice · GCSE Computer Science
June 2012 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in June 2012, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in June 2012
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st June 2012Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 2nd June 2012Give one example of an optical secondary storage device.
- 3rd June 2012Give two reasons why network communication is divided into layers.
- 4th June 2012State the term used for realistic data that a program would be expected to handle during normal use.
- 5th June 2012A table called members has fields memberId, firstName, lastName and joinYear. Write an SQL statement that adds a new record with memberId 12, firstName 'Priya', lastName 'Shah' and joinYear 2026.
- 6th June 2012State the difference between lossy and lossless compression.
- 7th June 2012State the condition that must be met before a binary search can be used on an array.
- 8th June 2012A 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.
- 9th June 2012Convert the hexadecimal number FF to an 8-bit binary number.
- 10th June 2012Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 11th June 2012Explain why an interpreter is often preferred while a program is being written.
- 12th June 2012Convert the denary number 45 to hexadecimal.
- 13th June 2012What does the acronym CPU stand for?
- 14th June 2012State what the term malware means.
- 15th June 2012A 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.
- 16th June 2012An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
- 17th June 2012Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 18th June 2012Which piece of UK legislation controls how organisations must store and use people's personal data?
- 19th June 2012Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 20th June 2012State the correct order of the three operations used to read data from a text file.
- 21st June 2012Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 22nd June 2012State the layer that IP operates in, and describe its job.
- 23rd June 2012A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 24th June 2012A 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.
- 25th June 2012State one function carried out by the operating system of a computer.
- 26th June 2012In computational thinking, what is meant by the term 'decomposition'?
- 27th June 2012Given A = 1 and B = 1, state the value of A AND B.
- 28th June 2012Convert the denary number 200 to hexadecimal, showing your working.
- 29th June 2012Define a peer-to-peer network.
- 30th June 2012Describe what syntax highlighting is and how it helps a programmer.