Daily Practice · GCSE Computer Science
October 2010 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in October 2010, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in October 2010
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 2010Write a function called isEven that takes one integer parameter, num, and returns True if num is even and False otherwise.
- 2nd October 2010Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 3rd October 2010A 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.
- 4th October 2010A 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?
- 5th October 2010Explain why iterative testing, carried out throughout development, tends to make errors cheaper to fix than relying only on final testing.
- 6th October 2010A 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.
- 7th October 2010Define the term 'interrupt' as used to describe a signal received by a CPU.
- 8th October 2010An 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.
- 9th October 2010Evaluate X = NOT A AND B when A = 0 and B = 1.
- 10th October 2010Convert the hexadecimal number FF to an 8-bit binary number.
- 11th October 2010Give one advantage of a star topology compared with a mesh topology.
- 12th October 2010Name the translator used for assembly language and describe how it differs from a compiler.
- 13th October 2010Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 14th October 2010State the three stages of the fetch-decode-execute cycle in the order they occur.
- 15th October 2010State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 16th October 2010Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 17th October 2010Define the term 'pixel'.
- 18th October 2010Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 19th October 2010Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 20th October 2010Evaluate the expression 23 DIV 4.
- 21st October 2010State the correct order of the three operations used to read data from a text file.
- 22nd October 2010A 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.
- 23rd October 2010Define the term protocol.
- 24th October 2010A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 25th October 2010A 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.
- 26th October 2010A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 27th October 2010An 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.
- 28th October 2010Complete: NOT 0 = ?
- 29th October 2010Convert the denary number 200 to hexadecimal, showing your working.
- 30th October 2010State what LAN stands for.
- 31st October 2010Explain the purpose of a breakpoint.