1. Selecting Hardware & Software Which is the right topology for us? What is right network type for us? Which operating system is right for us? Which is protocol is right for us?

2. Selecting a topology Factors –overall network size –potential network expansion –required bandwidth –cost 10Base2 –easiest to build and install, uses coaxial cables –will not scale up –not advisable for networks with many users –less reliable than hub and spoke –serial connections

3. NICs Soft set –had to set the jumpers in the past Interrupt Request (IRQ) –get computer’s attention Interrupt Conflict NE2000

4. 10BASE-T Most versatile, widely available, scalable easy to install and maintain, and reliable upgradable to 100BASE-T Requires a hub –may use crossover cable to connect 2 comps. Offers shared media and switching technology is star topology from center hub

5. Token Ring More expensive than ethernet out of mainstream 4 of 16 meg bits per second speed smaller market, so it is difficult to find routers, printer cards etc. and expensive similar to Ethernet in physical connections

6. 100BASE-FX FDDI and ATM use different methodology to send data, physical networking is the same high speed, snoop proof installing a fiber is 9 times more expensive than installing other cables

7. Network type Client/Server –is one-to-many scheme –useful to large businesses that have to manage their computer users’ resources efficiently –is appropriate when network is large network requires robust security regarding access to resources network requires that data be free from the threat of accidental loss network needs users to focus on server-based applications rather than on workstation-based applications and resources.

8. Peer Networking Able to share its resources with any computer is many to many scheme less organized appropriate when –network is relatively small (<15) –network does not require robust security regarding access to resources –network does not require that data be free from the threat of accidental loss –focused on workstation based rather server based applications

9. Peer and C/S networking Client in one and a peer in another Client for NetWare and Peer for Microsoft Networking This allows IPX with Novell and NETBEUI with Microsoft Networking an easier solution to share resources in terms of cost and effectiveness

10. Network Operating System Peer to Peer –Windows for Workgroups based on the idea of computers belonging to a common group that share resources among themselves –Windows 95/98 a great network client and a STELLAR peer network operating system –Windows NT workstation/2000 secure, powerful and robust requires more care and feeding than windows 95/98 –OS/2

11. Windows NT Server True multitasking, multithreaded network operating system NT servers are organized in to domains - a group of servers bound together by common security arrangements based on trust relationships Domain model is a little complex NT server is inherently suitable as an application server NT is aware of Remote Procedure Calls

12. NT continued Is appropriate for networks requiring administration Single server can serve the internet industrial strength OS familiar graphical user interphase

13. Network Protocol - IPX self configuring and easy to use builds network addresses from a combination of administrator-specified server network-wire addressed and network card MAC addresses IPX packets can be converted to IP packets and route them over the Internet IPX to IP conversion is less than perfect and there is slight loss of speed

14. NetBIOS/NetBEUI These protocols enable I/O over the network designed to be fast and very functional on small LANs cannot be routed so cannot work in WAN environment, and has to be encapsulated in IPX or TCP/IP (Net..packets in IPX or TCP/IP) Net… use alphanumeric addresses instead of numeric network addresses Net… chat all the time thus eating up bandwidth and thus are appropriate for small networks simplest to install

15. TCP/IP Universal solvent for networking protocol defined by committee adopted by consensus TCP/IP is a complete protocol suite IP does not care which route through the network a packet takes to get form point A to point B IP is hardware and OS independent running out of IP addresses so IPv6 Infinitely scalable Even though it is complex, time invested initially pays back later