Daily Practice · GCSE Computer Science
March 2006 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in March 2006, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in March 2006
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 2006A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 2nd March 2006A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 3rd March 2006A 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.
- 4th March 2006State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 5th March 2006Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 6th March 2006Give one example of an optical secondary storage device.
- 7th March 2006State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 8th March 2006State the term used for realistic data that a program would be expected to handle during normal use.
- 9th March 2006A 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.
- 10th March 2006State the difference between lossy and lossless compression.
- 11th March 2006State the condition that must be met before a binary search can be used on an array.
- 12th March 2006A 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.
- 13th March 2006Convert the hexadecimal number FF to an 8-bit binary number.
- 14th March 2006Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 15th March 2006State why a program written in a high level language must be translated.
- 16th March 2006Convert the denary number 45 to hexadecimal.
- 17th March 2006What does the acronym CPU stand for?
- 18th March 2006State what the term malware means.
- 19th March 2006Describe what a nested loop does when it processes a 2D array.
- 20th March 2006An 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).
- 21st March 2006Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 22nd March 2006Which piece of UK legislation controls how organisations must store and use people's personal data?
- 23rd March 2006Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 24th March 2006State the correct order of the three operations used to read data from a text file.
- 25th March 2006Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 26th March 2006Give two reasons why network communication is divided into layers.
- 27th March 2006A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 28th March 2006A 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.
- 29th March 2006State one function carried out by the operating system of a computer.
- 30th March 2006In computational thinking, what is meant by the term 'decomposition'?
- 31st March 2006Given A = 1 and B = 1, state the value of A AND B.