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Basics of Networking

Basics of Networking. By: Amy Simon. Does this sound familiar???. What happened to my student’s project? Why can’t I access my lesson in the computer lab? I know I saved it… somewhere… WHERE DID IT GO?????. Overview. Parts of the network Internet Modem Router Firewall Switch

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Basics of Networking

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  1. Basics of Networking By: Amy Simon

  2. Does this sound familiar??? • What happened to my student’s project? • Why can’t I access my lesson in the computer lab? • I know I saved it… somewhere… • WHERE DID IT GO?????

  3. Overview • Parts of the network • Internet • Modem • Router • Firewall • Switch • Wireless Access Point • Devices, Servers, and Clients • WAN/LAN

  4. Internet, or Internet Cloud • The internet cloud is a set of routers and other highly sophisticated communication devices managed by Internet Service Providers (ISPs). • Refers to anything associated with the internet. • Email server • Gmail • Yahoo • Outlook • Websites • Reading A-Z • Envision • Everyday Math • Sometimes referred to as “the cloud” • Highly technical, high speed, very sophisticated

  5. Modem • The modem connects devices to the internet. • Translator between your network and the internet cloud. • Several types of modems: • T1 – best internet connection, but not very fast and very expensive; great option where DSL or Cable modems aren’t available. • DSL (Digital Subscriber Line) – provides solid connection through telephone company, no shared bandwidth so connection doesn’t slow down with high volume. • Cable – few problems using cable, but main bandwidth is shared, so when there is high usage volume the service will be slow. • Satellite – great option for remote areas, but very slow as it connects with satellites in space. Uploading is nearly impossible with this type of connection. • 4G – connects wireless devices to cell phone towers.

  6. Firewall • A protective layer • Tries to protect from hackers. • Different types of firewalls: • Software firewalls on a server or device • Security device built into modem or router • Settings on this firewall will affect internet services for the entire network!

  7. Router • Allows devices to get to the modem and internet • Allows you to separate networks so there can be different networks within the same building. • It is common for routers now to have the modem, router, and firewall all built into one piece of hardware. • Some routers even have a switch and wireless access point built in for small networks, too.

  8. Switch ports • Connects all devices on the network together • Has ports for each computer, which connects each computer to the router. • Switches in large networks can get very complex, much more so than the one pictured below, to allow for many computers to be connected to the network.

  9. Wireless Access Points • One cable from each wireless access point is connected to the switch. • Allows wireless devices (printers, laptops, phones, iPads, etc.) to connect to the network and internet.

  10. Devices, Servers, and Clients • Device: anything connected to the network • Server: a networked device that provides a service to other devices on the network. • File server: One central computer that stores all of the files that everyone can access over the network. • Print server: Allows computers to print through it. • Client: a device in the network that accesses a service from the server. printer Devices/Clients server computer

  11. LAN/WAN • LAN: Local Area Network • A network within a building or small area • Each school building can have its own LAN • A district can have its own LAN • WAN: Wide Area Network • A network that covers more than one LAN to share applications or data. • A network between school districts • The internet is the largest WAN

  12. How Does It All Fit Together? firewall wireless access point switch router modem switch Typically all one piece of hardware. print server file server printer computers

  13. Bibliography • NETC: A Guide to Networking for K-12. (n.d.). Northwest Educational Technology Consortium. Retrieved September 15, 2013, from http://www.netc.org/network_guide/ • Networking - FREE Computer Training. (n.d.). FREE Computer Training - Computer Repair Classes - Laptop Repair Instruction - Data Recovery Lessons - Web Design Seminars - Computer Security Counseling. Retrieved September 15, 2013, from http://www.elithecomputerguy.com/classes/networking/ • Pictures from: http://it.ballaratsc.vic.edu.au/IT2/Theory%20topic%20notes/TheoryTopicG-Computer%20network%20designs.htm

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