Aqa Gcse Computer Science Paper 2 Study Guide Questions And Correct Answers

blagging {Ans: creating and using invented scenario so the victim gives away information}bus topology advantages {Ans: ✰ cheap and easy to install and maintain as uses less cable than star & ring networks ✰ new hardware can be added without disrupting other computers ✰ if one computer breaks down it can be sorted out without affecting the other computers}ransomware {Ans: a program that encrypts user's data to make it unreadable until they pay for the key}MAC address filtering {Ans: creates 'blocked list' for devices that could be dangerous}pharming {Ans: redirecting to a fake site}bus {Ans: a communication system that transfers data between components inside a computer, or between computers}assembler {Ans: translates an assembly-language program into machine code}magnetic hard disk {Ans: secondary storage device using magnetised platters to store data and files ✰ binary data represented by tiny magnetised regions ✰ where magnetic orientation in one direction = 0 ✰ and the other = 1 ✰ when reading data read/write head is moved ✰ disk spins around ✰ whole sector/block read in one go by read/write head}data compression {Ans: a process for reducing the number of bits needed to represent data}white box