Chapter EightAfter reading this chapter, you should be able to:After reading this chapter, you should be able to (continued):IntroductionNetwork Operating SystemsNetwork Operating Systems (continued)Current Network Operating SystemsNovell NetWareNovell NetWare (continued)Slide 10Slide 11Slide 12Slide 13Slide 14Additional Suggestions for Designing a Network TreeAdditional Suggestions for Designing a Network Tree (continued)Slide 17Slide 18Windows NT Version 4Windows NT Version 4 (continued)Slide 21Slide 22Slide 23Windows 2000Windows 2000 (continued)Slide 26Slide 27Slide 28Slide 29Windows 2003Windows 2008UnixLinuxNovell LinuxMac OS X ServerSummary of Network Operating SystemsNetwork ServersNetwork Servers (continued)Slide 39Slide 40Client/Server Networks vs. Peer-to-Peer NetworksNetwork Support SoftwareUtilitiesInternet SoftwareSoftware Licensing AgreementsSoftware Licensing Agreements (continued)LAN Support DevicesLAN Software In Action: A Small Company Makes a ChoiceLAN Software In Action: A Small Company Makes a Choice (continued)Wireless Networking In Action: Creating a Wireless LAN for HomeWireless Networking In Action: Creating a Wireless LAN for Home (continued)Slide 52SummarySummary (continued)Slide 55Chapter EightLocal Area Networks: Software and Support SystemsData Communications and Computer Networks: A Business User’s ApproachSixth EditionData Communications and Computer Networks: A Business User's Approach, Sixth Edition 2After reading this chapter, you should be able to:•Identify the main functions of network operating systems•Identify the basic features of one of the first network operating systems: Novell NetWare•Identify the basic features of the Windows Server family, Unix, Linux, and Mac OS X Server network operating systems•Compare and contrast the Windows Server family, Unix, Linux, and Mac OS X Server network operating systemsData Communications and Computer Networks: A Business User's Approach, Sixth Edition 3After reading this chapter, you should be able to (continued):•Recognize the importance of the network server and the different types of network servers available •Identify the different levels of RAID•Identify common examples of network utility software and Internet software•Enumerate the various components of software licenses•Identify the different types of support devices commonly found on local area networksData Communications and Computer Networks: A Business User's Approach, Sixth Edition 4Introduction•Proper support of a local area network requires hardware, software, and miscellaneous support devices•Network OS is the most important software component•Numerous network support programs are also required to support users on a LAN–Support devices such as hubs, switches, routers, servers, modems, power supplies, and more are also necessaryData Communications and Computer Networks: A Business User's Approach, Sixth Edition 5Network Operating Systems•An OS manages all applications and resources in a computer•Multitasking OS supports execution of multiple processes at one time•Network OS is large, complex program that manages the resources common on most local area networks; client OS such as Windows 7 can perform some networking functions•Besides performing standard OS functions, a network OS is called upon for additional functions, such as:Data Communications and Computer Networks: A Business User's Approach, Sixth Edition 6Network Operating Systems (continued)Data Communications and Computer Networks: A Business User's Approach, Sixth Edition 7Current Network Operating Systems•Several popular network OSs currently exist:–Windows Server family –Unix–Linux–NetWare derivatives•Even though NetWare installations are now fewer than any of the first three, NetWare is introduced first since it was the first to introduce the modern directory structureData Communications and Computer Networks: A Business User's Approach, Sixth Edition 8Novell NetWare•At one time NetWare was the leading local area network OS•Has since fallen way down the list on number of installations and may even pass into oblivion some day•Nonetheless, it was NetWare that introduced a number of very powerful concepts, including the hierarchical directory structureData Communications and Computer Networks: A Business User's Approach, Sixth Edition 9Novell NetWare (continued)•Version 3 – popular but older version of Novell NetWare–No longer supported by Novell (end of 2000)–User logs onto a particular server–Bindery maintains directory system•Version 4 –Unlike version 3 this version allows single network login–Bindery replaced by powerful NDS database–No longer supported by Novell (beginning of 2004)Data Communications and Computer Networks: A Business User's Approach, Sixth Edition 10Novell NetWare (continued)•Version 5 –Allows administrator to use IP protocol instead of Novell’s proprietary IPX/SPX protocolsData Communications and Computer Networks: A Business User's Approach, Sixth Edition 11Novell NetWare (continued)•Version 6–Any client anywhere on the Internet can print and use storage services from NetWare 6 server without loading a single byte of Novell’s Client32 software–Powerful Internet printing services (iPrint) make printing nearly idiot-proof •User clicks on graphical image of floor plan showing printers; if user does not have printer driver, it is loaded automatically in backgroundData Communications and Computer Networks: A Business User's Approach, Sixth Edition 12Novell NetWare (continued)•Version 6 (continued)–iFolder •Very effective background application powered by Apache Web Server to “equalize” the documents in each system’s My Documents folder with an identical set on the server–Volumes can hold 8 terabytes of data in up to 8 trillion files and can keep 1 million files open concurrentlyData Communications and Computer Networks: A Business User's Approach, Sixth Edition 13Novell NetWare (continued)•Novell NDS (NetWare Directory Services) –A database that maintains information on, and access to, every resource on the network, including users, groups of users, printers, data sets and servers–Network administrator creates a hierarchical tree structure that represents the layout of the organization–Tree structure is composed of organizational units which are composed of further objects, and leaf objects which are not composed of further objectsData Communications