1. The Tech that supports the Net Net Tech for CBIS

2. Review of Basics Computer Models Von Neumann Input/Process/Output/Store Basic Data Formats Bits/Bytes/Hex Pixels, ADC/DAC, file formats Software Categories OS/Utilities Apps/Clients S13 2 MIS

3. Net Architecture Device Level TCP / IP over Ethernet Bitstream Level packet switching / Routers Last Mile ISP Backbone ISP Last Mile Service Level Client / Server Peer to Peer S13 3 MIS

4. Client Server Net Services Client is half of Service resides on local machine requires a net connection for other half 3 examples of client app Server is half of Service resides on remote machine requires a service protocol with Client 3 examples of Net Services S13 4 MIS

5. Software Apps Operating System – examples (4) Manages hardware/software Resources Kernel (anchors to hardware) / Shell (UI) model Thin vs Thick Clients – what is GDocs? Open Source vs Licensed – example of each S13 5 MIS

6. Encryption Net Packets are generally plain text Packet Sniffing allows reading message https – encrypts packet data to and from server. Requires "trust" that you are who you say you are. this is only as secure as the Certificate Authorities are, hack one get many certificates S13 6 MIS

7. Virtual Private Networks Using Net, create a private "tunnel" for services Uses Client / Server, but Use a Thick client with strong authentication (may not use certificates) (what you know, what you have, what you are) specialized encryption Server has specialized encryption Once you are connected, appears as a "private" network S13 7 MIS