Introduction to Windows/ Session 2/ 1 of 41 Introduction to Windows Session 2 Introduction to Windows/ Session 2/ 2 of 41 Session Objectives  Explain the concept of an Operating System  Explain the concept of Networking  Explain workgroup and domain models  Identify features of Windows Operating System family  Define some commonly used terminology  Explain concept of sharing in Windows Introduction to Windows/ Session 2/ 3 of 41 Introduction to Operating Systems “An operating system is a program that acts as an interface between the user and the computer hardware and controls the execution of all kinds of programs.” THE USER Floppy disk Hard disk Storage Devices Output device Printer / Monitor THE OPERATING SYSTEM M E M O R Y The Control Unit / The ALU Central Processing Unit Input device Keyboard Introduction to Windows/ Session 2/ 4 of 41 Functions of an Operating System  It loads itself into memory.  It loads user program into memory.  It loads required data into memory.  It interprets program instructions.  Gives instruction to display results on screen.  It manages resources. Introduction to Windows/ Session 2/ 5 of 41 Single-user system  Has a single CPU and one set of I/O devices.  Popular example - Microsoft Disk Operating system or MS-DOS. Introduction to Windows/ Session 2/ 6 of 41 Multi-user systems  More than one user can work on system  Each user could be working on different set of programs and data  Central computer acts as server  Data and programs stored on server  All processing is done by server  Computers connected as nodes or workstations function as dumb terminals or intelligent terminals  Common multi-user system is UNIX Introduction to Windows/ Session 2/ 7 of 41 Introduction to Networking “A computer network is a data communication network wherein two or more computers and peripheral devices are linked together”.  Connection may be permanent (where cables are used) or temporary (through phone lines).  Various devices are connected through network interface card (NIC). Introduction to Windows/ Session 2/ 8 of 41 Illustration of a Computer Network = Communication network node = Network station Communications network Introduction to Windows/ Session 2/ 9 of 41 Uses of Networking  Centralised storage  Sharing data and resources  Remote database and program access  Communication  Economical Introduction to Windows/ Session 2/ 10 of 41 Types of Network  Based on geographical location, networks can be classified as:  Local Area Network (LAN)  Enterprise Networks  Wide Area Network (WAN) [...]... rode on top of DOS (Disk Operating System) Windows 4.0 family of operating systems combines operating system technology of DOS and graphical user interface of earlier versions Introduction to Windows/ Session Windows Operating System Windows Longhorn Windows 2003 Windows XP Windows 2000 Windows Me Windows 98 Windows 95 Windows NT Workstation Windows NT Server Introduction to Windows/ Session Windows. .. 32-bit operating systems Introduction to Windows/ Session Windows 2000 Professional Features: – Easier to use – Easier to manage – More compatible – More powerful Introduction to Windows/ Session Features of Windows 2000 Professional(contd.) Easier to use With Windows 2000 Professional, you have faster access to information, and you are able to accomplish tasks more quickly and easily Windows 2000 Professional... (BDC) Introduction to Windows/ Session Domain Model (contd.) Advantages – Centralised administration – Security management is centralised Disadvantages – Administration is more complex – Sharing resources is more complex Introduction to Windows/ Session The World of Windows Command line interface, users have to know relevant DOS commands Windows - graphical user interface (GUI) Initial versions of Windows. .. Folder permission types No Access Read Change Full Control Introduction to Windows/ Session Assigning Permissions Permission to individual users Permissions to Groups Combining User and Group permissions Introduction to Windows/ Session Shared folder permissions Permissions on shared folder flow down to subfolders Shared permissions can be applied to both FAT and NTFS partitions Drawbacks : – Shared permissions... off Resource TCP/IP – Transmission Control Protocol / Internet Protocol Username Introduction to Windows/ Session Definitions (contd.) Mapped drive – a mapped drive hard disk on another computer that user can access as their own It appears as a letter on user’s computer Permissions Remote access Introduction to Windows/ Session Concept of Ownership Creator of file or folder - owner of file or folder... default, administrator has permission to use object Controlled by removing permission Administrator can forcibly “take ownership” of object Introduction to Windows/ Session Sharing on the network Depends on permissions you are assigned – Read permission - view contents of folder – Print permission - send print jobs, user cannot manage jobs of other users Introduction to Windows/ Session Types of Permissions... permissions Introduction to Windows/ Session Shared folder permissions When folder is shared, permitted users gain access to all files in folder No individual file level control No security when a user logs on locally After folder is shared appropriate shared folder permission can be assigned to required users Shared permissions only way to secure resources in a FAT file system Introduction to Windows/ Session. .. the new Euro currency symbol Introduction to Windows/ Session Features of Windows 2000 Professional(contd.) More powerful For all your computing needs, Windows 2000 Professional provides: – Industrial-strength reliability – The highest level of security – Powerful performance Introduction to Windows/ Session Definitions Account or “User Account” Computer name Home directory Log on Log off Resource... applied only to folders – Shared permissions are effective only over network Introduction to Windows/ Session NTFS Permissions NTFS permission can be assigned only on partition formatted using NTFS file system Advantages: – NTFS permission applied to files and folders – NTFS permissions applicable even on local computer Introduction to Windows/ Session NTFS Permission Types When applied to folders Read... administration distributed throughout computers on workgroup Introduction to Windows/ Session Workgroup Model (contd.) Advantages – Simple design makes it easy to implement – Easy to share resources – Convenient for a limited number of users Disadvantages – No centralised management – Duplication of accounts – Inefficient on a large network Introduction to Windows/ Session Domain Model Networked computers are grouped . Introduction to Windows/ Session 2/ 1 of 41 Introduction to Windows Session 2 Introduction to Windows/ Session 2/ 2 of 41 Session Objectives  Explain the. versions. Introduction to Windows/ Session 2/ 19 of 41 Windows Operating System  Windows Longhorn  Windows 2003  Windows XP  Windows 2000  Windows Me  Windows 98  Windows 95  Windows. peripherals Introduction to Windows/ Session 2/ 12 of 41 Workgroups and Domains  In Windows NT two prevalent modes of grouping networked computers: – Workgroups – Domains Introduction to Windows/ Session