OSI Model

Back to Networking

It is a view of networking that breaks down the layers of abstraction. Essentially, several layers of conventions on how to wrap data with metadata and the protocols for unwrapping.

5-7 Application & Upper Layer Data

These are the highest level of abstraction, generally deal with encryption & compression


4 Transport

TCP, UDP sends Segment datagrams

3 Network

IPv4, IPv6, ICMP.

Ethernet protocol, WiFi protocol, amongst others. Each frame wraps informations around each data payload. This layer's responsibility is making a connection and ensuring error free transfer

1 Physical

Bits over cables. Electrical specs.