Quiz Entry - updated: 2026.07.14
What are the four main types of network protocols and what does each do?
Network communications, network security, routing, and service discovery protocols.
| Protocol Type | Description |
|---|---|
| Network Communications | Enable two or more devices to communicate over one or more networks |
| Network Security | Secure data by providing authentication, data integrity, and data encryption |
| Routing | Enable routers to exchange route information, compare path information, and select the best path |
| Service Discovery | Used for automatic detection of devices or services on the network |
Implementation: Protocols can be implemented in software, hardware, or both. Each protocol has its own function, format, and rules.
Go deeper:
Communication protocol — overview spanning communications, security, routing, and discovery protocols.- Routing protocol — the routing class in detail (how routers exchange and select paths).