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Today’s Topics <ul><li>Chapter 8: Networks </li></ul><ul><li>HTML Introduction </li></ul>
Chapter 8: Networks
Network Fundamentals <ul><li>Network: group of two or more computer systems linked together to exchange data and share res...
Network Fundamentals <ul><li>Router: complex device used to connect two or more LANs or WANs </li></ul><ul><li>File Server...
Advantages of Networking <ul><li>Reduced Hardware Costs </li></ul><ul><li>Application Sharing </li></ul><ul><li>Sharing In...
Disadvantages of Networking <ul><li>Loss of Autonomy </li></ul><ul><li>Lack of Privacy </li></ul><ul><li>Security Threats ...
LANs <ul><li>Peer-To-Peer Network (P2PN): all computers on the network are equal </li></ul><ul><li>Client/Server Network: ...
LANs <ul><li>LAN Protocol: Standard that Enable Network-Connected Devices to Communicate with Each Other </li></ul><ul><ul...
WANs <ul><li>Point of Presence (POP): WAN network connection point </li></ul><ul><li>Backbone: high-capacity transmission ...
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10/3/05

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Transcript of "10/3/05"

  1. 1. Today’s Topics <ul><li>Chapter 8: Networks </li></ul><ul><li>HTML Introduction </li></ul>
  2. 2. Chapter 8: Networks
  3. 3. Network Fundamentals <ul><li>Network: group of two or more computer systems linked together to exchange data and share resources </li></ul><ul><ul><li>Local Area Network (LAN): links computers or peripherals within a small geographic area </li></ul></ul><ul><ul><li>Wide Area Network (WAN): links computers within a large area </li></ul></ul><ul><li>Workstation or Client: computer that is connected to a network </li></ul><ul><li>Node: workstation or peripheral that is connected to the network </li></ul><ul><li>Network Interface Card (NIC): expansion board to connect to a network </li></ul>
  4. 4. Network Fundamentals <ul><li>Router: complex device used to connect two or more LANs or WANs </li></ul><ul><li>File Server: high-capacity, high-speed computer with a large hard disk </li></ul><ul><li>Network Operating System (NOS): software required to run the network </li></ul><ul><li>Network Administrator or Network Engineer: person who installs, maintains, and supports computer networks </li></ul>
  5. 5. Advantages of Networking <ul><li>Reduced Hardware Costs </li></ul><ul><li>Application Sharing </li></ul><ul><li>Sharing Information Resources </li></ul><ul><li>Centralized Data Management </li></ul><ul><li>Connecting People </li></ul>
  6. 6. Disadvantages of Networking <ul><li>Loss of Autonomy </li></ul><ul><li>Lack of Privacy </li></ul><ul><li>Security Threats </li></ul><ul><li>Loss of Productivity </li></ul>
  7. 7. LANs <ul><li>Peer-To-Peer Network (P2PN): all computers on the network are equal </li></ul><ul><li>Client/Server Network: includes file servers as well as clients </li></ul><ul><li>LAN Topologies </li></ul><ul><ul><li>Bus Topology (Daisy Chain): every workstation is attached to a single bus </li></ul></ul><ul><ul><ul><li>Contention Management: a technique that specifies what happens when a collision happens </li></ul></ul></ul><ul><ul><li>Star Topology: uses a central wiring device (hub) </li></ul></ul><ul><ul><li>Ring Topology: all nodes are attached in a circular wiring arrangement </li></ul></ul>
  8. 8. LANs <ul><li>LAN Protocol: Standard that Enable Network-Connected Devices to Communicate with Each Other </li></ul><ul><ul><li>Ethernet: most popular networking system for large and small businesses </li></ul></ul><ul><ul><li>LocalTalk: Mc computer networking system </li></ul></ul><ul><ul><li>Wi-Fi: wireless networking system ( https:// wifi.umsl.edu ) </li></ul></ul><ul><li>Network Layers: Divided Network Architecture </li></ul>
  9. 9. WANs <ul><li>Point of Presence (POP): WAN network connection point </li></ul><ul><li>Backbone: high-capacity transmission lines that carry WAN traffic </li></ul><ul><li>Transmission Control Protocol/Internet Protocol (TCP/IP): Internet protocol </li></ul><ul><li>IP Address: Internet address, divided into four parts which are separated by periods </li></ul><ul><li>Circuit Switching: sending data over physical end-To-end circuit </li></ul><ul><li>Packet Switching: sending data into divided packet </li></ul>
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