Computer Systems

... UNIT 2 - COMPUTER SYSTEMS Assignment 2 Table of Contents Task 1 2 Task 2 4 Task 3 7 TASK 1 Q1. Basic tasks performed by an operating system include: 1. checking the keyboard for input, controlling the transfer of programs in and out of main memory, communicating with the user, keeping track of files and directories on backing storage 2. controlling input and output devices, monitoring user activities, virus checking, 3. controlling system security, optimising graphics images, maintaining directories A1. 1 Q2. Some operating systems (such as Windows XP) enable multi-tasking. An example of multi-tasking is: 1. several users working on different programs on the same computer at the same time 2. many users logging on from remote terminals at the same time 3. a user working on spreadsheet whilst uploading files to the Internet and printing documents in background mode A2. 3 Q3. Operating systems may have command line or menu interfaces. Newer operating systems like MEPIS have: 1. menu driven interfaces 2. command line driven interfaces 3. no

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