Daily Practice · GCSE Computer Science
December 2008 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in December 2008, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in December 2008
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st December 2008Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 2nd December 2008Define the term 'pixel'.
- 3rd December 2008Order these from fastest access speed to slowest: RAM, cache, registers, secondary storage.
- 4th December 2008Which piece of UK legislation makes it a criminal offence to gain unauthorised access to a computer system?
- 5th December 2008Evaluate the expression 23 DIV 4.
- 6th December 2008State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 7th December 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.
- 8th December 2008A 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?
- 9th December 2008A 'quantity' field on a website must only accept whole numbers from 1 to 10. Which validation check identifies that 15 has been entered?
- 10th December 2008A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
- 11th December 2008A row of 8 pixels is WWWBBBWW. Use run-length encoding to encode this row as pairs of (colour, run length).
- 12th December 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.
- 13th December 2008Complete: NOT 0 = ?
- 14th December 2008State how many different values can be represented using 5 bits, and explain your reasoning.
- 15th December 2008State what LAN stands for.
- 16th December 2008Name the translator used for assembly language and describe how it differs from a compiler.
- 17th December 2008An 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.
- 18th December 2008Which CPU register holds the address of the next instruction to be fetched?
- 19th December 2008Distinguish between the network security threats known as phishing and pharming.
- 20th December 2008Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 21st December 2008A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 22nd December 2008A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 23rd December 2008A 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.
- 24th December 2008State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 25th December 2008State the key difference between a procedure and a function.
- 26th December 2008Give one example of an optical secondary storage device.
- 27th December 2008Define the term protocol.
- 28th December 2008State the term used for realistic data that a program would be expected to handle during normal use.
- 29th December 2008Give one advantage of a relational database over a flat-file database.
- 30th December 2008State the difference between lossy and lossless compression.
- 31st December 2008State the condition that must be met before a binary search can be used on an array.