1. Home Networks ICS-100 Dale Gibler

2. Why build a network?

3. Why build a network system.  Share data  Share files  Share applications  Communicate  Share internet connection  Share peripherals  It’s just cool!

4. Getting started:  Requirements list  Model: Logical and physical  Network topology to use  Hardware  Protocols  Operating system  Applications

5. Requirements:  What will this network be used for?  How many users?  What devices will be used?  Bandwidth allocation.  Management and monitoring.  Speed.  Cost: Budget

6. Modeling: Logical network diagram

7. Modeling: Physical network diagram

8. Hardware: What do I need?  Computers  NIC  Cabling (connection)  Wireless  Router (Special computer that messages when several networks are connected together)  Hub (used to connect segments of a network)  Bridge (interface used to connect the same type of networks)  Gateway ( allows communication between dissimilar networks)  Server ?

9. Connections  Infrared transmission - the transmission of data signals using infrared-light waves  Communications satellites - microwave relay stations in orbit around the earth  Geostationary earth orbat (GEO): 22K miles up and always above the equator.  Medium earth orbat (MEO): 5k to 10k miles up  Low earth orbit (LEO): 400 to 1000 miles up

10. What protocols should I use?  Protocols: set of rules  PPPoE: Point-to-Point Protocol over Ethernet. PPPoE relies on two widely accepted standards: PPP and Ethernet. PPPoE is a specification for connecting the users on an Ethernet to the Internet through a common broadband mediumPPPEthernetInternet

11. Protocols continued:  MTU: Maximum Transmission Unit, the largest physical packet size, measured in bytes, that a network can transmit. Any messages larger than the MTU are divided into smaller packets before being sent.packet bytesnetwork  802.3  NAT (Network Address Translation )  TCP and UDP (Transmission Control Protocol & User Datagram Protocol)

12. Network OS: what do they do?  An operating system that includes special functions for connecting computers and devices into a local- area network (LAN).operating systemcomputersdeviceslocal- area network  Some operating systems, such as UNIX and the Mac OS, have networking functions built in.UNIX Mac OSnetworking  The term network operating system, however, is generally reserved for system software that enhances a basic operating system by adding networking features.softwarefeatures  For example, some popular NOS's for DOS and Windows systems include Novell Netware, Artisoft's LANtastic, Microsoft LAN Manager, and Windows NT.DOS WindowssystemsNovellMicrosoft

13. Average Cost of a home network:  $160.00 to $500.00