Networks

Networks

1. Types of connections

   • Optical fibers
     • Is designed to carry multiple light rays or modes concurrently
       • Used for relatively short distances
   • Network interface Card NIC
     • Every computer and most devices are connected to network through NIC
   • Wireless LAN
   • Coaxial Cable
     • Widely installed for use in business and corporation ethernet

2. Topologies

   • Physical connection of devices in the network
   • Types
     • Bus
       • Data is dent to all computers on the trunk. Each computer examines every packet on the wire to determine who the packet is for
     • Ring
       • Each computer acts as a repeater and keeps the signal strong
     • Star
       • No beginning or end. All devices have equality of access
     • Mesh
       • A network setup where each computer and network device is interconnected with one another, allowing for most transmissions to be distributed, even if one of the connections go down.
     • Hybrid
       • Combination of different topologies

3. Categories

   • PAN
   • SAN/SAN
   • Local Area Networks (LAN)
   • Metropolitian Area Networks (MAN)
   • Wide Area Networks (WAN)

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