2: operating systems networking for home & small business

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  • 2: Operating SystemsNetworking for Home & Small Business

  • Purpose of the OSAllows components to work togetherWrite a report & printEnter on keyboardStored in RAMProcessed by CPUDisplayed on monitorPrinted on printerAll computerized device require an OS

  • How the OS WorksLoads OS into RAM from disk drive ShellInterface with the applications & userProvides access to the OSInteract with the shell usingCommand Line Interface (CLI) Graphical User Interface (GUI)KernelOS code that interacts with the computer hardware is known as theManages communication between hardware & software

  • The OS

  • CLI

  • GUI

  • The OSManage one user at a timeMultitaskOS keeps track of resources used

    Some resources are not directly connected to the PCExamples???

  • Redirector & NOSRedirector (OS driver or Network Client software)Now becomes a NOSAllows device to be sharedActs as though it were directly connected

  • Review so farWhich interface has a command prompt?CLIAfter powering up, the OS gets loaded into where?RAMWhat interfaces with the user & application?Shell

  • OS LicenseCommercial LicenseWindows, Mac, UNIX

    GNU Public License (GPL)FREELinux

  • Comparing Licenses

  • OS RequirementsAmount of RAMHard disk space requiredProcessor type and speedVideo resolution

    MinimumPoor performanceRecommended

  • Activity- Commercial or GPL

  • Choosing An OSMust meet requirements of userSupport applicationsSecurity sufficientIs the hardware supported by the OS?Will the company support the new OS?At home, will support be available readily?Total Cost of Ownership (TCO)Buying, installing, supporting

  • ReviewWhich type of OS provides full access to the source code?GPLWhich type of OS is costly?CommercialWhich type of OS provides support through its users?GPL

  • ReviewName 4 specifications for OS install requirements.HDProcessorRAMVideo ResolutionDescribe a network redirector.What are the 2 ways you can interact with the shell?CLI & GUI

  • Lab 2.2Specifications of OS

  • Installing the OS- Clean InstallDeletes all data on install pathApplications need to be reinstalledWhen would you do a clean install?

  • Installing the OS- UpgradeSystem config settings, applications and data are preservedReplaces old OS files with new ones

  • Installing the OS- Multi-bootCan install more than one OS to a driveWhy?Each has its own partitionOwn files & config settingsOn start, user chooses which OSOnly one OS runs at a time

  • Activity

  • Pre-Installation ChecklistVerify all hardware is certified to work with the OS.

    Verify the hardware resources meet or exceed the minimum requirements.

    Confirm the appropriate installation medium is available. Do you have CD or DVD & the correct drive?

    If the OS is to be installed on a system that already contains data: (a) Use system diagnostic tools and utilities to ensure the current OS installation is in good condition, free of malicious or damaging files and codes; (b) Complete a full backup of all important files.

    If performing a clean-install, verify that all application software is available for installation.

  • PartitionsOn clean install, some techsPartition 1 for OSPartition 2 for data

    When upgrade OS, data will not be deleted

  • Review so farWhat is a partition?

    What happens to data on a HD during a clean install?

    How many OSs are running in a multiboot system?

    What happens to applications during an upgrade?

  • Configure for NetworkWhat is a network?Group of devices connected to each other to share info & resourcesNICIP AddressIds computer UNIQUESubnet MaskIds the network it is onDefault Gatewaythe way out of the network

  • Network Communication

  • Configuring the IPManual (static) or Dynamic (automatic) pool

  • Computer NamingManually assignedFor easy sharingAdmin designs naming schemePRT-CL-Eng-01 represents the 1st color laser printer in the Engineering Department

  • Planning Names & AddressesThe larger the network gets, you MUST be organized & documented!Come up with guidelines

  • ReviewA DHCP server assigns address how?Automatically/DynamicallyWhat are 3 settings you need to connect to a network?IP, Subnet Mask, Default GatewayWhat is a default gateway?Address to get out of the network so it can communicate with other networksDescribe a partition.

  • ReviewWhich install method requires applications to be reinstalled?Clean InstallBefore upgrading the OS, what should you do with your data?Back it upTo be on a network, what 2 things need to be unique?IP address & computer name

  • When to Apply PatchesWhats a patch?Piece of program code that can correct a problem or enhance the functionality of an application program or OSUpdate computers often BUT make sure you understand the patch first!

  • Applying the OS PatchAutomatic installation

    Prompt for Permission

    Manual

  • Auto, Manual, or Prompt?

  • Applying the Application PatchBrowsers, Office, other programs

    Repair a detected vulnerability or other problem

    Found on manufacturers site

  • Lab 2.3.3

  • ReviewWhats a patch?Where can you find a patch?Manufacturers web siteWhat are the 3 methods for getting OS updates?Auto, Manual, With PermissionWhat user interface has icons?GUI

  • ReviewWhere do devices get IP addresses from dynamically?A DHCP serverWhat is needed to install two OSs on a PC?Multiple partitionsWhat letter grade will you get on this test?A or B, hopefully

  • 2: Operating SystemsNetworking for Home & Small Business

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