OCR GCSE COMPUTER SCIENCE - OPERATING SYSTEMS EXAM QUESTIONS AND ANSWERS

What does the 'Operating System' do with peripheral devices? Allow the computer to communicate with them What does the word 'Interface' mean? A menu that the user can interact with Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:14 / 0:15 Full screen What is a GUI? Graphical User Interface If you are writing a document and you press print, does the program know how to communicate with the printer?...why? No, it sends the job to the operating system which knows how to send it to the printer. What do 'Operating Systems' provide to enable users to interact with a computer? GUI How does the 'Operating System' stop these opened programs reading and writing to the memory areas of other programs? It restricts their permissions If you are writing a document and you press print, does the program know how to communicate with the printer? No When you save a file in a program, what role does the 'Operating System' play? It communicates the data and information to the hard drive. What are the three major interfaces that 'Operating Systems' provide? - GUI - Menu Driven - Command Line How can an 'Operating System' prevent a computer system from being open to abuse/sabotage from its users? It requires a password to be inputted before allowing access to the drives If a CPU core can only deal with one process at a time, why do modern computers appear to have several programs working all at the same time (simultaneously)? They have multiple cores and it is so fast that it looks simulatenous How does a 'graphical user interface' differ from a 'command line interface'? It contains graphics so the user does not have to remember commands What is Multi-Tasking when it comes to a computer system? Having multiple programs open simultaneously How does a 'menu driven interface' differ from a 'GUI'? It has no graphics and only offers a menu rather than other features as well. What is a peripheral device? A computer that is communicated to on a network to perform tasks specific to it How does an 'Operating System' enable several programs to run at the same time when a CPU core can only actually deal with one process at a time? It is so fast that it appears simultaneous Operating Systems can allow several users to use the same PC. How is this done? It seperates parts of the