Local-area networks (LANs) are high-speed, low-error data networks that cover a small geographic area.
LANs are usually located in a building or campus and do not cover a large distance. They are relatively inexpensive to develop and maintain. LANs connect computers, printers, terminals, and other devices in a single building or a limited area.
What are LAN standards?
LAN standards define the physical media and connectors used to connect to the media at the physical layer and the way devices communicate at the data link layer.
LAN standards encompass Layers 1 and 2 of the OSI model. Examples of LAN standards are Ethernet and IEEE 802.3.
What are Typical Components found in LANs?
Interconnection : Nics
Network Devices: Switches , routers, accesspoints
Protocols: Ethrnet, Arp , IP DHCP
hat is the logical topology of Ethernet?
Bus. Ethernet uses a logical bus topology and either a physical bus or star topology.
What are two types of Layer 1 network devices?
- Repeaters: Regenerate and retime network signals, amplifying them to allow the signal to travel a longer distance on a network media.
- Hubs: Known as a multiple-port repeaters, hubs also regenerate and retime network signals. The main difference between a hub and a repeater is the number of cables that connect to the device. A repeater typically has 2 ports, whereas a hub has from 4 to 48 ports.
What are some network devices that operate at the data link layer (Layer 2)?
Bridges and switches are network devices that operate at the data link layer.