Networking Device and Protocols
A network protocol is a standardized set of rules governing how data is formatted, transmitted, received, and interpreted across devices on a network. Think of it as the “language” that ensures different computers can understand each other—even with different hardware or software—and guarantees interoperability
1. Introduction
1.4. Examples of Hubs and Protocols
Devices:
Consumer Hubs: Netgear EN104 (4-port Ethernet hub), D-Link DE-805TP (5-port hub).
Legacy Hubs: 3Com OfficeConnect, Linksys EFAH05W (common in the 1990s).
Protocols:
Ethernet Standards: IEEE 802.3 (e.g., 10Base-T for 10 Mbps, 100Base-T for 100 Mbps).
Physical Layer Protocols: Support for twisted-pair wiring (e.g., Cat5 cables), coaxial cables (e.g., 10Base2), or fiber optics.
Connectors: RJ45 for Ethernet, BNC for older coaxial-based hubs (e.g., 10Base2).
Use Cases of Hubs
Historical Use:
Widely used in the 1990s for small LANs in homes, schools, and small offices to connect computers and printers.
Example: Connecting a classroom’s computers to a single network for file sharing.