Clients and Servers
Understand how clients and servers form the backbone of the Internet — how requests and responses flow, what roles each plays, and how they communicate using protocols.
Understand how clients and servers form the backbone of the Internet — how requests and responses flow, what roles each plays, and how they communicate using protocols.
Understand how DNS and IP addresses work together to make the Internet human-friendly — learn what happens when you type a URL, how domain names are translated, and why IP addresses matter.
Explore the Domain Name System (DNS) — the backbone of the Internet that translates human-readable names into IP addresses. Learn its structure, types of records, and how the DNS resolution process works.
Understand how data travels across the Internet, how devices communicate through packets and protocols, and how requests move between clients, servers, and networks.
Understand what the Internet really is, how it connects billions of devices, and learn about the systems and protocols that make global communication possible.
Learn how Ping and Traceroute help diagnose network connectivity issues, measure latency, and trace the path your data takes across the Internet.
Understand how data moves across the Internet through packets and routers. Learn how routing works, how packets are delivered, and why this system keeps the Internet fast and reliable.
Understand the core principles of Internet security — encryption, authentication, and data protection — and learn how to stay safe online.
Learn how CDNs make websites faster, more reliable, and globally accessible by caching and delivering content from distributed servers close to users.
Learn what firewalls are, how they protect networks from unauthorized access, and explore the different types of firewalls used in modern Internet security.
Dive into the TCP/IP model — the foundation of how data travels across the Internet. Learn about its layers, protocols, and how it powers communication between devices.