1. Network Operating System Lab
Chapter 1: Introduction
Presented by Dr. Souad

2. Objectives Define Network and Network Operating System
Discuss clients, servers, and Windows network models
Differentiate among the editions of Windows Server 2008
Identify Windows Server 2008 hardware requirements
Discuss the new Windows Server 2008 technologies

3. Network Benefits

4. Role of Computers in Network

5. Types of Network

6. Network Operation system

7. Clients, Servers, and Windows Network Models
Workgroup
Network of computers that allow each other access to their files, printers, or Internet connection
By default, all Windows Server 2008 computers are placed in a workgroup named WORKGROUP
Membership status
Either a single workgroup or a domain

8. Domain Model with Active Directory
Group of users and computers managed by the same security database
Active Directory Domain Services (AD DS)
Technology that runs the domain security database
Domain controllers (DCs)
Servers that hosts domain security database
Domain Name System (DNS)
TCP/IP-based standard for resolving computer names with IP addresses

9. Windows Server 2008 Editions
General editions of Windows Server 2008
Enterprise, Datacenter, and Standard
Editions designed for special-purpose server applications
Web Server and HPC Server

10. Windows Server 2008, Standard Edition
Designed for smaller environments and single-purpose installations
Works as a single domain server for a small business or
A single file/application server in larger environments

11. Windows Server 2008, Enterprise Edition
Features not available with SE (Standard Edition)
Significant increase in maximum allowable memory
Failover clustering
Installation of up to four virtual machines on each physical host

12. Windows Server 2008, Datacenter Edition
Additional features
Ability to run up to 32 processors
Ability to hot-add and replace processors
Installation of unlimited virtual machines on each physical host

13. Windows HPC Server 2008
Designed for high-performance computing (HPC) applications
Accommodates up to thousands of processing cores because it is built on the Server bit architecture model

14. Windows Server 2008 Hardware Requirements
Microsoft provides minimum and recommended hardware requirements for installing its operating systems
Minimum requirements
Let you install and run a system using minimal resources and services

16. 32-Bit and 64-Bit Processors
64-bit architectures
Have greater theoretical limit for processing data
Can handle twice the amount of data of a comparable 32-bit product

17. Some New Technologies in Windows Server 2008
This section introduces the following technologies and enhancements
Improved installation process
Hyper-V
Network Access Protection

18. Improved Installation Process
Requires minimal user input
You no longer have to wait for the installation program to ask for information
Networking information, regional settings, and other settings

19. Hyper-V Virtualization
Allows you to run one or more separate instances of an OS within a single host OS
Allows organizations to consolidate these physical systems onto high-powered servers

20. Network Access Protection
Helps to protect networks, both public and private, from malware such as viruses and spyware
Threat sources
Employees accessing the Internet from work and inadvertently install Trojan horses
Isolate access to connections from external networks that create a gateway for viruses
Guest (Visitors) computers accessing an internal network that introduce malware to the network

21. Summary Most modern networks are based on client-server computing
Windows Server 2008 offers three general editions and two special-purpose editions
Windows Server 2008 Standard
Windows Server 2008 Enterprise
Windows Server 2008 Datacenter
Windows Web Server 2008
Windows HPC Server 2008

22. Summary (continued) Windows Server 2008
Available for both 32-bit and 64-bit hardware architectures
New technologies in Windows Server 2008
Focus on improving the performance, manageability, and security of networks
Server Manager
Provides administrators with a GUI console for managing roles and features
Has a look and feel similar to Windows Vista