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Module 1: Fundamentals of Network Infrastructure

Module 1: Fundamentals of Network Infrastructure. Module 1: Fundamentals of Network Infrastructure. Network Communication Standards Physical Network Infrastructure Logical Network Organization Overview of Active Directory Server Roles. Lesson 1: Network Communication Standards.

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Module 1: Fundamentals of Network Infrastructure

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  1. Module 1: Fundamentals of Network Infrastructure

  2. Module 1: Fundamentals of Network Infrastructure • Network Communication Standards • Physical Network Infrastructure • Logical Network Organization • Overview of Active Directory • Server Roles

  3. Lesson 1: Network Communication Standards • What Is the OSI Model? • Why Use the OSI Model? • Discussion: Common Network Standards • Benefits of Network Standards • Standards Defining Bodies

  4. What Is the OSI Model? The Open System Interconnection (OSI) model defines the generic tasks that are performed for network communication Application 7 • Each layer defines networking tasks • Each layer communicates with the layers above and below it • Layer 7 provides services for programs to gain access tothe network • Layers 1 and 2 define the network’s physical media and related tasks Presentation 6 Session 5 Transport 4 Network 3 Data-Link 2 Physical 1

  5. Why Use the OSI Model? The OSI model is a common reference point for discussing network communication that is used to describe device and protocol functionality Examples: • Router is a layer 3 device • HTTP is a layer 5–7 protocol • Ethernet is a standard for layers 1–2

  6. Discussion: Common Network Standards What are some common network standards?

  7. Benefits of Network Standards Network standards: • Enable vendor interoperability • Reduce costs

  8. Standards Defining Bodies Standards defining bodies include: • Internet Engineering Task Force (IETF) • World Wide Web Consortium (W3C) • Institute of Electrical and Electronics Engineers (IEEE) • International Telecommunication Union (ITU)

  9. Lesson 2: Physical Network Infrastructure • Discussion: Network Components • Common Types of Media • What Is a Switch? • What Is a Router? • What Is a Firewall?

  10. Discussion: Network Components Branch Office Head Office Internet

  11. Common Types of Media Twisted Pair Fiber Optic Wireless Wireless Card Wireless Port

  12. What Is a Switch? A switch: • Is a LAN communication device • Tracks the location of computers Server Switch Workstations Printer

  13. What Is a Router? Router/Gateway Router/Gateway LAN LAN Server Server A router: • Moves packets between networks • Tracks networks not computers • Is required between physical locations • Is sometimes referred to as a gateway

  14. What Is a Firewall? Hosts Firewall A firewall: • Is a router with rules • Controls inbound and outbound communication • Protects hosts behind the firewall

  15. Lesson 3: Logical Network Organization • What Is a LAN? • What Is a WAN? • What Is a Branch Office? • Discussion: Branch Office Challenges • What Is a Perimeter Network? • What Is Remote Access?

  16. What Is a LAN? Server Switch Workstations Printer A LAN: • Is a single physical location • Has fast network connectivity • Has typically minimal control

  17. What Is a WAN? Branch Office Router Head Office LAN Router LAN Server Server A WAN: • Is used between physical locations • Has slower connection speed than a LAN • Is more expensive than LAN connectivity • Uses connectivity typically provided by another company

  18. What Is a Branch Office? A branch office is remote location that is connected by WAN links to the head office with: • A generally small number of users • Limited local support resources • Limited local computing resources Branch Office Head Office LAN LAN Branch Office Server Server LAN

  19. Discussion: Branch Office Challenges What are the challenges of branch office communication?

  20. What Is a Perimeter Network? LAN Web Server Server Internet A perimeter network: • Isolates LAN resources • Increases security

  21. What Is Remote Access? Dial-up Client LAN Remote Access Server Modem Server VPN Client Internet Remote access: • Provides access to LAN resources from outside the office • Can be VPN or dial-up

  22. Lesson 4: Overview of Active Directory • What Is Active Directory? • Benefits of Active Directory • What Is a Domain? • What Is a Forest? • What Is a Domain Controller? • Demonstration: Joining a Domain

  23. What Is Active Directory? Active Directory: • Is a central repository of network information • Is organized into domains, trees, and forests • Has multiple partitions: • Domain • Configuration • Schema

  24. Benefits of Active Directory Compared to a workgroup, the benefits of Active Directory include: • Simplified security management • Redundant storage of security information • Group Policy • Extensibility

  25. What Is a Domain? Organizational units in a domain Computer account A domain is a logical grouping of objects such as computer and user accounts User account

  26. What Is a Forest? A forest is a collection of domains that trust each other nwtrader.msft contoso.msft Tree eu. nwtrader.msft sales.contoso.msft na. nwtrader.msft

  27. What Is a Domain Controller? A Domain Controller: • Holds a copy of Active Directory • Responds to requests for Active Directory information • Authenticates users to the network • Is located by querying DNS

  28. Demonstration: Joining a Domain In this demonstration, you see how to join a computer to a domain

  29. Lesson 5: Server Roles • Windows Server 2008 Editions • What Are Server Roles? • What Are the Windows Infrastructure Services Roles? • What Are the Windows Application Platform Services Roles? • What Are the Active Directory Roles? • What Are Server Features? • What Is Server Core?

  30. Windows Server 2008 Editions The Windows Server 2008 editions are: Windows Web Server 2008 Windows Server 2008 Standard Windows Server 2008 Enterprise Windows Server 2008 Datacenter Windows Server 2008 for Itanium-Based Systems Windows HPC Server 2008

  31. What Are Server Roles? File Services DNS Server Print Services Server roles describe the primary server function Active Directory Domain Services Web Server IIS

  32. What Are the Windows Infrastructure Services Roles? Windows Infrastructures Services roles include: • Active Directory Certificate Services • Active Directory Rights Management Services • DHCP Server • DNS Server • Fax Server • File Services • Network Policy and Access Services • Print Services • Terminal Services • Windows Deployment Services

  33. What Are the Windows Application Platform Services Roles? Windows Application Platform Services roles include: • Application Server • UDDI Services • Web Server (IIS) • Windows SharePoint Services

  34. What Are the Active Directory Roles? Active Directory roles include: • Active Directory Domain Services • Active Directory Federation Services • Active Directory Lightweight Directory Services

  35. What Are Server Features? Server features are supporting services that can be installed Examples of server features: • .NET Framework 3.0 • BitLocker • Network Load Balancing • Failover Clustering • Desktop Experience • Windows PowerShell

  36. What Is Server Core? A server core is an installation of Windows Server 2008 that: • Has minimal services • Has no graphical interface • Increases security • Can be configured in a limited number of roles

  37. Lab: Identifying Network Components • Exercise 1: Create a Network Diagram • Exercise 2: Expand the Network Diagram Estimated time: 30 minutes

  38. Lab Review • Which network communication standards are used by Margie’s Travel? • Which Windows Server 2008 Server roles are used by Margie’s Travel?

  39. Module Review and Takeaways • Review Questions • Real-world Issues and Scenarios • Tools

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