Speed and Error Rate
A local network is distinguished by a high transmission speed (generally from 1 Gbps to 100 Gbps in 2026) and a low bit error rate, unlike wide area networks (WANs) which are more sensitive to atmospheric or physical disturbances.
Access Methods
Managing media sharing is crucial. Either CSMA/CD (Collision Detection) for Ethernet or deterministic methods like Token Passing are used to prevent two machines from "talking" at the same time.
Types of Information Exchanged
Beyond office automation, modern networks manage real-time data. The digitization of voice and video requires advanced compression solutions and QoS (Quality of Service) management to avoid stuttering during Teams or Zoom meetings.
Interconnection & Interoperability
The Importance of IEEE 802 Standards:
The IEEE 802 committee defines the standards that govern the physical and data link layers of the OSI model. Without these standards, a CISCO switch could not communicate with an Intel network card.
802.3
Wired Ethernet
802.11
Wi-Fi & WLAN
802.15
Bluetooth / WPAN
802.6
Metropolitan Networks