By Elizabeth Goldstein ‘19

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TYPES OF COMPUTER NETWORKS

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Presentation transcript:

By Elizabeth Goldstein ‘19 Chapter 12: Behind the Scenes, Networking and Security in the business World By Elizabeth Goldstein ‘19

Network types Local Area Network (LAN) Small group of computers and peripherals linked together over a relatively small geographic area Computer lab at your school or the network serving the floor of the office building where you work is probably a LAN goldstein

LAN explanation video: goldstein

Network types Wide Area Network (WAN) Comprises large numbers of users over a wider physical area or separate LANs that are miles apart Use WANs to connect two or more geographically distant locations A college might have a west and an east campus located in two different towns goldstein

Network types Personal Area Network (PAN) Devices used by one person connected via wireless media Usually by employees traveling on buissness goldstein

Network types Home Area Network (HAN) A type of small LAN installed in home Not usually deployed by businesses, except small home-based businesses goldstein

Network types Metropolitan Area Network (MAN) WANs constructed by municipalities to provide connectivity in a specific geographic area Although not deployed by businesses, employees often use them while traveling goldstein

How do VPNs work? Virtual Private Network (VPN) Uses the public internet communications infrastructure to build a secure, private network among various locations. Special security technologies and protocols that enhance security, enabling data to traverse the internet as securely as if it were on a private leased line. goldstein

VPN diagram The process of how it goes through and is extra security goldstein

Servers and their Functions Print servers Manage all printing jobs for client computers Application servers Serve as a repository for application software Database servers Provide client computers with database access Authentication servers Keep track of users logged onto the network Print servers Manage all printing jobs for client computers Application servers Serve as a repository for application software Database servers Provide client computers with database access Authentication servers Keep track of users logged onto the network goldstein

Servers and their Functions File servers Store and manage files for network users E-mail servers Process and deliver incoming and outgoing e-mail Communication servers Handle all communications between the network and other networks Web/Cloud servers Host websites to make them available through the internet File servers Store and manage files for network users E-mail servers Process and deliver incoming and outgoing e-mail Communication servers Handle all communications between the network and other networks Web/Cloud servers Host websites to make them available through the internet goldstein