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  • Bus Networks    - Devices share a single data path consisting of one cable- Affordable- Easy to useStar network- Contains a single hud where all devices communicate-  All devices and computers connect to a central device forming a star-  easy to install and nodes can be added or removed with no affect to other nodesRing Network- all connected devices form a loop that data passes through in one direction.-  has more distance than BUS networks, but is much more difficult to install.
  • In today's lesson we will start with net work topologies, in other words the layout of computers and devices in a network
  • There are three types of networks. BUS networks, ring networks and star networks
  • Routers- This is a hardware device that routes data (hence the name) from a local area network (LAN) to another network connection. Switches- a device for making, breaking, or changing the connections in an electrical circuitHubs-  a central device that connects multiple computers on a single network     Modem -  It allows one computer to connect another computer and transfer data over telephone lines. Brigdes -  creates a single aggregate network from multiple communication networks or network segments.Network Interface Card-   A network interface card (NIC) is a circuit board or card that is installed in a computer so that it can be connected to a network.
  • Next are the basic parts of a network
  • Multiplexers- (MUX) is a device allowing one or more low-speed analog or digital input signals to be selected, combined and transmitted at a higher speed on a single shared medium or within a single shared device.Wireless Access Point - specially configured devices on wireless local area networks (WLANs). Access points act as a central transmitter and receiver of wireless radio signals including WI-FI  .
  • Here are some more basic parts to know
  • Centralized                                                                                                                           - Costly                                                                            -  Extremely powerful                                                 - Not easy to change- Also known as Terminal Network SystemPeer to Peer- No dedicated server- All computers are equal- Functions as both client and server
  • Networks are usually only setup as Peer to Peer, Centralized, or in a Client server. here is a description of each type.
  • Client Server- built around one or more dedicated servers-Administered from central location- More powerful than peer-to-peer-Supports thousands of clients\- Most common network
  • Next is network configuration
  • Fiber Optic Cable - A fiber optic cable is a network cable that contains strands of glass fibers inside an insulated casing. They're designed for long distance, high-performance data networking, and telecommunications.Microwave  -  a line-of-sight wireless communication technology that uses high frequency beams of radio waves to provide high speed wireless connections that can send and receive voice, video, and data information.Twisted Pair Cable  - Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility.Coaxial Cable - a transmission line for radio frequency signals.  Satellite -     provide global wide access to information by transmitting radio signals from orbit around the earth. Infrared -   IR wireless is the use of wireless technology in devices or systems that convey data through infrared (IR) radiation.
  • Finally, some transmitting devices.
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