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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

Anycast
A network routing technique where the same IP address is announced from multiple locations, directing users to the nearest server.
Bandwidth
The maximum rate of data transfer across a network connection, measured in bits per second.
IP Address
A unique numerical label assigned to each device on a computer network for identification and communication.
DNS over HTTPS (DoH)
A protocol that encrypts DNS queries by sending them over HTTPS, preventing eavesdropping and manipulation of DNS traffic.
Reverse Proxy
A server that sits between clients and backend servers, forwarding client requests and returning server responses on their behalf.
TCP vs UDP
Two transport layer protocols: TCP provides reliable, ordered delivery while UDP provides fast, connectionless delivery without guarantees.
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