2. By: Amy Simon

3.  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?????

4.  Parts of the network ◦ Internet ◦ Modem ◦ Router ◦ Firewall ◦ Switch ◦ Wireless Access Point  Devices, Servers, and Clients  WAN/LAN

5.  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

6.  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.

7.  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!

8.  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.

9.  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. ports

10.  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.

11.  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. server printer computer Devices/Clients

12.  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

13. swit ch wireless access point  print serverfile server printer computers switch routerfirewall modem Typically all one piece of hardware.

14.  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/net working/ http://www.elithecomputerguy.com/classes/net working/  Pictures from: http://it.ballaratsc.vic.edu.au/IT2/Theory%20topic%20notes/Theory TopicG-Computer%20network%20designs.htm