Lan vs wan


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Lan vs wan

  1. 1. Server (computing), a server application,operating system, computer, or appliance·Application server a server dedicated to running certain software applications Example PMS2k3holds all of our applications for Perry Middle School: Classworks; Typing software·Communications server , carrier-grade computing platform for communications networks ExampleEmail Server Database server , stores data for retrieval Example in Houston County:AS400/SmartWeb·Fax server provides fax services for clients·File server provides file services·Home server a server for the home·Print server provides printer services·Web server , a server that HTTP clients connect to in order to send commands and receiveresponses along with data contents·Web Feed Server , a server that distributes, manages, and tracks internal and external RSS feedsan enterprise·Client-server , a software architecture that separates "server" functions from "client" functions
  2. 2. Protocol is a convention or standard that controls or enables the connectionInternet protocol (IP)- Server assigns an IPaddress to each computer when it comesonline. CANNOT connect to the Internet orLAN without an IP address.
  3. 3. A computer network is a group of interconnected computers andnetwork printers. Router Switch
  4. 4. WAN- Wide Area Networkis a computer network that covers a broad area (i.e., any networkwhose communications links cross metropolitan, regional, or nationalboundaries). Connects all LAN servers and all networked computers.Example: Houston County School System LAN- Local Area Networkis a computer network covering a small geographic area, like a home,office, or group of buildings e.g. a school. Computers are connected toa server. Faster file acquisition due to small area.Example: Perry Middle School
  5. 5. ·The largest computer network in the world (anetwork of networks)·Information exchange is seamless using open,non-proprietary standards and protocols,within interconnected networks·A true democratic communications forumproducing a democratization of information·Spirit of information sharing and open accessunderlies the Internet.
  6. 6. ·Packets of information flow between machines governed bycommon rules (protocols):·Internet is a packet-switching network·Messages are decomposed into packets, containing part of the message, plusinformation on the sending and receiving machines and how the packet relatesto the other packets·Packets travel independently and possibly on different routes through theInternet·Packets are reassembled into the message at the receiving machine.
  7. 7. HTTP- Hypertext Transfer Protocolis a URI scheme or network protocol for the transfer of information on theInternet. Its use for retrieving inter-linked text documents led to theestablishment of the World Wide Web.HTTPS - Hypertext Transfer Protocol over Secure Socket Layeris a URI scheme used to indicate a secure HTTP connection. FTP- File Transfer Protocolis a URI scheme or network protocol used to transfer data from onecomputer to another through a network such as the Internet.
  8. 8. URI -Uniform Resource Identifieris the top level of the Uniform Resource Identifier. All URIs and absolute URIreferences are formed with a scheme name, followed by a colon character (":").Example: http: URL - Uniform Resource Locatoris an URI which also specifies where the identified resource is available and theprotocol for retrieving it. It is a means of accessing a network location.