Daily Practice · GCSE Computer Science
December 2004 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in December 2004, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in December 2004
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 2004A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 2nd December 2004A 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.
- 3rd December 2004State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 4th December 2004Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 5th December 2004Give one example of an optical secondary storage device.
- 6th December 2004A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?
- 7th December 2004State the term used for realistic data that a program would be expected to handle during normal use.
- 8th December 2004A 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.
- 9th December 2004State the difference between lossy and lossless compression.
- 10th December 2004State the condition that must be met before a binary search can be used on an array.
- 11th December 2004A 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.
- 12th December 2004Convert the hexadecimal number FF to an 8-bit binary number.
- 13th December 2004Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 14th December 2004Name the translator used for assembly language and describe how it differs from a compiler.
- 15th December 2004Convert the denary number 45 to hexadecimal.
- 16th December 2004What does the acronym CPU stand for?
- 17th December 2004State what the term malware means.
- 18th December 2004Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 19th December 2004An 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).
- 20th December 2004Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 21st December 2004Which piece of UK legislation controls how organisations must store and use people's personal data?
- 22nd December 2004Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 23rd December 2004State the correct order of the three operations used to read data from a text file.
- 24th December 2004Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 25th December 2004Define the term protocol.
- 26th December 2004A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 27th December 2004A 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.
- 28th December 2004State one function carried out by the operating system of a computer.
- 29th December 2004In computational thinking, what is meant by the term 'decomposition'?
- 30th December 2004Given A = 1 and B = 1, state the value of A AND B.
- 31st December 2004Convert the denary number 200 to hexadecimal, showing your working.