Operating Systems. Networking for Home and Small Businesses – Chapter 2. Objectives. Describe the purpose of an OS and identify common operating systems available. Perform an actual or simulated installation of an operating system and prepare the computer to participate on the network.
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Operating Systems Networking for Home and Small Businesses – Chapter 2
Objectives • Describe the purpose of an OS and identify common operating systems available. • Perform an actual or simulated installation of an operating system and prepare the computer to participate on the network. • Maintain the operating system.
Purpose of an Operating System • Describe the purpose of an operating system • User Interface: CLI vs. GUI • Connects the user to hardware • CLI: Command Line Interface • GUI: Graphical User Interface • Use of resources: OS vs. NOS • OS provides functionality for one user at a time. • NOS provides resources to multiple users simultaneously
Purpose of an Operating System • Identify common operating systems and describe license requirements
Purpose of an Operating System • Operating System Requirements • Go to the Operating system vendors website • Check hardware compatibility www.microsoft.com/hcl
Operating system considerations: • Security – is this operating system secure? • Support – who will support it? • Politics – do managers support this effort? • Cost – is this within budget? • Availability – is this product readily available? • Resources – are the resources necessary to deploy it available? • Platform – is this the right technology for the company? • Use – will the users be able to use this product?
Installation of an Operating System • Installation methods: • Virtualization (VMWare, Virtual PC) • Clean Install (Clean hard drive) • Multi-boot (Multiple OS, Multiple Partitions) • Upgrade (Install new OS over existing OS)
Installation of an Operating System • Pre-Installation Checklist: • 1. Verify that all hardware is certified to work with the OS. • 2. Verify that the hardware resources meet or exceed the published minimum requirements. • 3. Confirm that the appropriate installation medium (CD/DVD) is available. • 4. 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. • 5. If performing a clean-install, verify that all application software is available for installation.
Configuring a Computer for the Network • To participate in a network a computer must have a Network Interface Card (NIC) • Each computer must be configured to participate in the network: • IP address - identifies the computer on the network. • Subnet mask - is used to identify the network on which the computer is connected. • Default gateway - identifies the device that the computer uses to access the Internet or another network. • A computer can be configured manually or dynamically (DHCP)
Computer Naming • A computer name should be descriptive so that it can be easily identified on the network • A computer name must be unique on each local network • A computer description can be given to provide additional information • Computer names must be unique and should be consistent • IP addresses are like phone numbers on the network • IP addresses must be unique • A computer may have multiple NICs and each NIC may have more than one IP address – each address must be unique
Operating System Maintenance • A patch fixes a problem or enhances functionality and are provided by the application or OS vendor to fix a vulnerability • Patches should be test thoroughly with business critical software to ensure that they function appropriately before they are applied in a production environment. • Automatic Installation • Prompt for Permission • Manual
Operating System Maintenance • Identify sources of Applications patches
Summary • An operating system is the most important software in a PC. It is responsible for making all of the components and software applications work together. • An OS is installed in a disk partition. • To participate in a network, a computer requires an IP address, subnet mask and default gateway. • An OS must be kept up-to-date with the latest revisions, or patches. • Before installing a wireless network an installation plan should be created.