Understanding LAN

what is lan?

• Is a network that connects computers and other devices in a relatively small area.

Types of lan

• CANs: Campus Area Network, several buildings in a single area that are interconnected.
• MANs: Metropolitan Area Network, buildings are more dispersed.
• WANs: Wide Area Network, allow you to create a multi-location LAN, or WAN.

Network

• Share.
• Communicate.
• Organization.
• Remote acces.
• Money

NETWORK

• Network documentation: how computer are connected in a physical and logical way.
• Network adapter: device that sends and receives data to and from your computer
• Ethernet: transmission of data between network adapters and various central connecting devices.

Network

• IP adress: numerical label assigned to each device, hat uses the Internet Protocol for communication.
• Host: computer that has an IP address.
• Subnet Mask: group of four numbers that define what IP network the computer is a member of.
• Ping command: test between hosts.

Types of transfer

• Unicast: a piece of information is sent from one point to another point.
• Broadcast: a piece of information is sent from one point to all other points.
• Multicast: a piece of information is sent from one or more points to a set of other points.

network topologies

• Ring
• Mesh
• Star
• Fully connected
• Line
• Bus

Connecting devices

• Hub: used to connect segments of a LAN.
• Switch: device that channels incoming data from any of multiple input ports to the specific output port.
• Router: route packets to other networks until that packet ultimately reaches its destination.