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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

VPN (Virtual Private Network)
A technology that creates an encrypted tunnel between your device and a remote server, securing internet traffic.
DNS Propagation
The time it takes for DNS record changes to spread across all DNS servers worldwide, typically taking up to 48 hours.
Traceroute
A network diagnostic tool that shows the path packets take from source to destination, listing each hop along the way.
Content Delivery Network (CDN)
A geographically distributed network of servers that caches and delivers web content from locations closest to users for faster load times.
OSI Model
The seven-layer Open Systems Interconnection model that standardizes network communication functions from physical transmission to application protocols.
Multicast
A network communication method that sends data to multiple recipients simultaneously without duplicating packets for each recipient.
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