Daily Practice · GCSE Computer Science
December 2014 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in December 2014, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in December 2014
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 2014Give one example of an optical secondary storage device.
- 2nd December 2014State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 3rd December 2014State the term used for realistic data that a program would be expected to handle during normal use.
- 4th December 2014A 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.
- 5th December 2014State the difference between lossy and lossless compression.
- 6th December 2014State the condition that must be met before a binary search can be used on an array.
- 7th December 2014A 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.
- 8th December 2014Convert the hexadecimal number FF to an 8-bit binary number.
- 9th December 2014Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 10th December 2014State why a program written in a high level language must be translated.
- 11th December 2014Convert the denary number 45 to hexadecimal.
- 12th December 2014What does the acronym CPU stand for?
- 13th December 2014State what the term malware means.
- 14th December 2014Describe what a nested loop does when it processes a 2D array.
- 15th December 2014An 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).
- 16th December 2014Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 17th December 2014Which piece of UK legislation controls how organisations must store and use people's personal data?
- 18th December 2014Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 19th December 2014State the correct order of the three operations used to read data from a text file.
- 20th December 2014Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 21st December 2014Give two reasons why network communication is divided into layers.
- 22nd December 2014A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 23rd December 2014A 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.
- 24th December 2014State one function carried out by the operating system of a computer.
- 25th December 2014In computational thinking, what is meant by the term 'decomposition'?
- 26th December 2014Given A = 1 and B = 1, state the value of A AND B.
- 27th December 2014Convert the denary number 200 to hexadecimal, showing your working.
- 28th December 2014Define a peer-to-peer network.
- 29th December 2014Explain why an interpreter is often preferred while a program is being written.
- 30th December 2014Convert the denary number 5 to a 4-bit binary number.
- 31st December 2014A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.