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Networking Beginner

What is TCP/IP?

The fundamental communication protocol suite of the internet that defines how data is packaged, addressed, transmitted, and received.

TCP/IP (Transmission Control Protocol/Internet Protocol) is a layered protocol stack. TCP provides reliable, ordered, error-checked data delivery. IP handles addressing and routing packets across networks.

The model has four layers: Application (HTTP, SMTP), Transport (TCP, UDP), Internet (IP), and Network Access (Ethernet, Wi-Fi). Together they enable all internet communication.

Related Terms

Reverse Proxy
A server that sits between clients and backend servers, forwarding client requests and returning server responses on their behalf.
Anycast
A network routing technique where the same IP address is announced from multiple locations, directing users to the nearest server.
IPv6
The latest version of the Internet Protocol with 128-bit addresses, designed to replace IPv4 and solve address exhaustion.
Latency
The time delay between sending a request and receiving a response, measured in milliseconds.
BGP (Border Gateway Protocol)
The routing protocol that makes the internet work by exchanging routing information between autonomous systems.
DHCP
A protocol that automatically assigns IP addresses and network configuration to devices on a network.
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