Daily Practice · GCSE Computer Science
November 2014 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in November 2014, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in November 2014
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 2014Give one advantage of a star topology compared with a mesh topology.
- 2nd November 2014Explain the purpose of a breakpoint.
- 3rd November 2014Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 4th November 2014State the three stages of the fetch-decode-execute cycle in the order they occur.
- 5th November 2014State one weakness of a simple shift cipher compared to modern encryption methods used on networks.
- 6th November 2014Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 7th November 2014Define the term 'pixel'.
- 8th November 2014Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 9th November 2014Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 10th November 2014Evaluate the expression 23 DIV 4.
- 11th November 2014A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
- 12th November 2014A 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.
- 13th November 2014Name the four layers of the TCP/IP model in order from the one closest to the user.
- 14th November 2014A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 15th November 2014A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 16th November 2014A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 17th November 2014An 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.
- 18th November 2014Complete: NOT 0 = ?
- 19th November 2014Convert the denary number 39 to an 8-bit binary number, showing your working.
- 20th November 2014State what LAN stands for.
- 21st November 2014A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.
- 22nd November 2014An 8-bit register stores the value 01100000 (denary 96). State the resulting 8-bit binary value after a left shift by 1 place, and state whether an overflow occurs.
- 23rd November 2014Which CPU register holds the address of the next instruction to be fetched?
- 24th November 2014Distinguish between the network security threats known as phishing and pharming.
- 25th November 2014An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 26th November 2014A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 27th November 2014A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 28th November 2014A 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.
- 29th November 2014State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 30th November 2014Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c