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Chapter 12: Advanced Operating Systems 3After completing this section, you will meet these objectives:■■Describe operating systemsDescribe network operating systemsDescribe Operating SystemsAn operating system is the interface between the user and the computer. Without an operatingsystem, the user would not be able to interact with the hardware or software on thecomputer. An operating system provides the following operational and organizational capabilities:■■■■Provides a bridge between the hardware and applicationsCreates a file system to store dataManages applicationsInterprets user commandsOperating systems have minimum requirements for hardware. Table 12-2 shows the minimumhardware requirements for several operating systems.Table 12-2OS Hardware RequirementsHardware Windows XP Mac OS X Linux UNIXCPU Intel Pentium/ PowerPC G3, G4, 486 or greater PA-RISC 1.1,Celeron family, or G5 processor processor PA-RISK 2.0,AMD K6/Athlon/Sun SPARCDuron family, orUltra 1, orcompatible; single-higher;or dual-processorPentium IIsystem; 300 MHz233 MHz oror higher higher (32-bit); Tru64CPU Alphaprocessor (64-bit); PowerPCprocessorMinimum 128 256 32 64RAM (MB)Minimum 1.5 3.0 3.5 1.0hard diskspace (GB)continues
4 IT Essentials: PC Harware and Software Companion GuideTable 12-2 OS Hardware Requirements continuedHardware Windows XP Mac OS X Linux UNIXDisplay Super VGA Built-in display — —(800 x 600) or or Apple-suppliedhigher resolution video cardvideo adapter and supported bymonitoryour computerCD CD-ROM or DVD drive — —DVD driveHuman Keyboard and — — —interface Microsoft mouseor compatiblepointing deviceI/O — Built-in FireWire — —Floppy drive — — 3.5-inch —Describe Network Operating SystemsA network operating system (NOS) is an operating system that contains additional featuresto increase functionality and manageability in a networked environment. The following areexamples of network operating systems:■■■■■■Windows 2000 ServerWindows 2003 ServerUNIXLinuxNovell NetWareMac OS XThe NOS is designed to provide network resources to clients:■■■■Server applications, such as shared databasesCentralized data storageDirectory services that provide a centralized repository of user accounts and resourceson the network, such as Lightweight Directory Access Protocol (LDAP) or ActiveDirectoryNetwork print queue
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iiiTrademark AcknowledgmentsAll ter
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vAbout the Technical ReviewersDavid
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ixIdentify the Names, Purposes, and
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CHAPTER 1Introduction to the Person
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Chapter 1: Introduction to the Pers
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CHAPTER 5Fundamental Operating Syst
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CHAPTER 7Fundamental Printers and S
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Chapter 7: Fundamental Printers and
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CHAPTER 15Advanced NetworksObjectiv
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CHAPTER 16Advanced SecurityObjectiv
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GlossaryThis glossary defines many
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ase station 3AppleTalk A protocol s
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CMOS battery 5bus topology A networ
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desktop computer 7crosstalk Interfe
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dynamic routing 9Domain Name System
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floppy data cable 11FFast Ethernet
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IEEE 802.11 13Hardware Compatibilit
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Internet service provider 15infrare
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media-handling options 17line of si
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network operating system 19multithr
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ping 21Page Description Language (P
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Regedit 23Printer Control Language
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three-claw part retriever 27surge s
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virtual memory 29Uninterruptible Po
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zero insertion force (ZIF) socket 3
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