Daily Practice · GCSE Computer Science
March 2011 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in March 2011, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in March 2011
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2011A 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.
- 2nd March 2011State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 3rd March 2011Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 4th March 2011Give one example of an optical secondary storage device.
- 5th March 2011Define the term protocol.
- 6th March 2011State the term used for realistic data that a program would be expected to handle during normal use.
- 7th March 2011A 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.
- 8th March 2011State the difference between lossy and lossless compression.
- 9th March 2011State the condition that must be met before a binary search can be used on an array.
- 10th March 2011A 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.
- 11th March 2011Convert the hexadecimal number FF to an 8-bit binary number.
- 12th March 2011Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 13th March 2011Explain the purpose of a breakpoint.
- 14th March 2011Convert the denary number 45 to hexadecimal.
- 15th March 2011What does the acronym CPU stand for?
- 16th March 2011State what the term malware means.
- 17th March 2011Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 18th March 2011An 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).
- 19th March 2011Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 20th March 2011Which piece of UK legislation controls how organisations must store and use people's personal data?
- 21st March 2011Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 22nd March 2011State the correct order of the three operations used to read data from a text file.
- 23rd March 2011Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 24th March 2011Name the four layers of the TCP/IP model in order from the one closest to the user.
- 25th March 2011A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 26th March 2011A 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.
- 27th March 2011State one function carried out by the operating system of a computer.
- 28th March 2011In computational thinking, what is meant by the term 'decomposition'?
- 29th March 2011Given A = 1 and B = 1, state the value of A AND B.
- 30th March 2011Convert the denary number 200 to hexadecimal, showing your working.
- 31st March 2011Define a peer-to-peer network.