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Unit 4- Networks
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Identify what a network is. Describe the benefits of a network. Identify ways to connect to a network. Compare & contrast a client-server network and a peer to peer network. Describe a LAN. Describe a WAN. Describe the Internet Compare & contrast an Intranet & Extranet.
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Computers need to communicate with each other 2 or more connected devices ◦ Share files & resources Standards allowed them to “speak the same language”
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Central Storage of files Share files, resources, printers Maintain network centrally Secure Backup
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Unauthorized shared data Network failure Easy to spread malicious programs & viruses Loss of privacy
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NIC Ethernet Cable Wireless NIC Router Cable/DSL/FiOS Modem
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Used in business/schools Computers & devices connect to a server
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Used at home (NO SERVER) Router allows devices to connect to each other Also allows shared Internet connection
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Comcast Cable Modem ◦ Through cable TV wire ◦ High Speed Broadband Verizon DSL ◦ Over phone line ◦ High Speed Broadband ◦ Limited distance Verizon FiOS ◦ Over fiber cable line ◦ High Speed Broadband ◦ Limited areas
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Look at Modem’s WAN or INTERNET port Comcast ◦ Coax Cable Wire Verizon DSL ◦ DSL Modem connects to Phone Jack ◦ Filters on phones Verizon FiOS ◦ Cable Wire Dial-Up ◦ Computer modem to phone jack
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What Do You Have at Home? Identify your Internet connection Add a diagram to your “My Computer” PPT ◦ Use pictures of your devices ◦ Show wired & wireless connections ◦ Show modems/routers and how they connect ◦ Don’t forget cell phones, TV’s, video games, tablets, thermostats, etc.
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LAN ◦ Local Area Network ◦ Devices connected in small area ◦ This classroom, this school, your house
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WAN ◦ Wide Area Network ◦ Connects LANs ◦ Over a large geographic area
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Originally for government Largest network What’s the most commonly used feature on the Internet? ◦ Email ◦ Email is stored on a server NOT ON PC
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What device allows the sharing of Internet access? ◦ Router What is the purpose of a network? ◦ Sharing files & resources How many wires are in an Ethernet cable? ◦8◦8 What does LAN stand for? ◦ Local Area Network
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Looks like Internet Private ◦ Only works w/in company network ◦ Great security Handbooks, forms, news, policies
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Private ◦ Allows outside organization to access internal info ◦ Extension of intranet Outside suppliers Employees Strict security ◦ Username & password
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End of Day Two A room of 5 connected computers describes a… ◦ LAN To connect to a network, your PC must have a… ◦ NIC This type of “Internet” is for internal use only within a business. ◦ Intranet
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Unit 4- Networks
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