Thursday, December 8, 2011

December 8, 2011

Starting Point Chapter 15:
Local Area Network is well connected. It is created to share related Resources. Some examples of "Nodes" are : computer, router, printer, sensing device, video camera, and controller. This can connect to External Networks. It has a central server that everyone is communicating with. It is local. You log onto a security base. 2 major catagories pere to pere, (# of  computers lives on each of computers). They have been around awhile. Another is Client server network. With Peer-to-peer each user has to have a valid user ID and password. It is approved by the client operating system. The local user acount exists only on a single computer. One user may have many accounts on differnt server. Security principle is somthing that gains control. Without user accounts there are no problems. Accessing Shares- My network places, map network drive, internet explorer, run menue. Client/ Server Model- Server mangages security for LAN. for example User accounts, printers, and file sharing. There is Single network user ID and password. Authenticate against the NOS too. It's the domain model and the Adminstrator assigns permissions. The server stores info in the database as well. One chooses the user name, password and the network you wish to work on. The authentication is done on the server. domain means everyone is logging onto teh same server. In order for a client to participate they have to have a network client. The machine needs a domain. One has to tell it which network to join. One has to install a protocall in a network card. The point of the protocall is to connect to novel servers. Net booy is unroutable. Can't get on internet. TCPIP is what most people use. UTP and STP has Ethernet nework. UTP-Unsheieded twsited pair. STP-Shielded twisted pair.
Stopping Point Chapter 15.  1.14

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