Capitulo 4

Capitulo 4

1. Data link layer protocols

   • Media access control
   • The Data Link Layer
     • the OSI data link layer is responsible for the exchange of Enthernet frames betwwen the nodes of origin and destination
   • Data Link Sublayers

2. Network Medida

   • Wireless Media
     • Wireless LAN
     • Types of Wireless Media
     • Properties od Wireless Media
   • Fiber optic wiring
     • Fiber versusu Cupper
     • fibra-optic connectors
     • Properties of Fiber-Optic Cabling
       • Transmit data throygh longer distances and at higher bandwidths
         • Enterprise Networks Fiber-to-the-Home LOng-Haul Networks Submarine Cable Networks

3. Copper wiring

   • Charecteristic of Copper Cabling
     • Crosstalk
     • Electromagnetic Interference or redio freque cy interference
   • Copper Media
   • Copper Media Safety

4. Physical layer protocol

   • Physical layer connerction
     • Types of Connerctions
       • a physical connection can be a cable connection or connection wireless by radio waves
     • NIC Ethernet
     • Wireles local area Network NIC
   • physical layer purposes
     • The transport layer segments user data
     • Then, theese signals are sent bby the media one at a timee
     • The physical layer encodes the frames and creates the electricl, optical signals

5. Media Access Conrol

   • Topology
     • Physical and ligical Topologies
       • The topology of a network is the configuration or list of network divices and the interconnections betwween them
     • Controllin Access to The Media
       • Media Sharing
       • Topology
   • LAN Topologies
     • Half and Full Duplex
       • Full-duplex Communication
         • Both divices can transmit and receive in the media at the same time
       • Half-Duplex communication
         • Both divices con transmit and receive in the media but they can`t do it similtaneosly
   • Physical LAn Topology

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