Daily Practice · GCSE Computer Science
April 2008 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in April 2008, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in April 2008
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 2008Describe two negative consequences of throwing away old computer hardware instead of recycling it.
- 2nd April 2008Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
- 3rd April 2008Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 4th April 2008A company backs up its files onto magnetic tape cartridges, each with a capacity of 3 TB. The company needs to back up 20 TB of data. Calculate the minimum number of cartridges needed.
- 5th April 2008Define the term protocol.
- 6th April 2008Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
- 7th April 2008A 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 April 2008Define the term 'interrupt' as used to describe a signal received by a CPU.
- 9th April 2008An array called items contains [12, 45, 7, 30, 19] at indices 0 to 4. Describe how a linear search would locate the value 30, stating the number of comparisons needed.
- 10th April 2008Evaluate X = NOT A AND B when A = 0 and B = 1.
- 11th April 2008Convert the hexadecimal number FF to an 8-bit binary number.
- 12th April 2008Give one advantage of a star topology compared with a mesh topology.
- 13th April 2008Explain the purpose of a breakpoint.
- 14th April 2008Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 15th April 2008State the three stages of the fetch-decode-execute cycle in the order they occur.
- 16th April 2008State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 17th April 2008Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 18th April 2008Define the term 'pixel'.
- 19th April 2008Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 20th April 2008Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 21st April 2008Evaluate the expression 23 DIV 4.
- 22nd April 2008State the correct order of the three operations used to read data from a text file.
- 23rd April 2008A 1 TB hard disk drive costs 40 pounds. A 500 GB solid-state drive costs 60 pounds. Calculate the cost per gigabyte of each device, and state which is cheaper per GB. Use 1 TB = 1000 GB.
- 24th April 2008Name the four layers of the TCP/IP model in order from the one closest to the user.
- 25th April 2008A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 26th April 2008A 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 April 2008A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 28th April 2008An array contains [9, 2, 6], to be sorted using insertion sort. Show the state of the array after each new element has been inserted into its correct position.
- 29th April 2008Complete: NOT 0 = ?
- 30th April 2008Convert the denary number 200 to hexadecimal, showing your working.