Networking
Master Ethernet LAN fundamentals for your CCNA exam. Learn how IEEE 802.3 defines Layer 1 and Layer 2 operations, Ethernet frames, MAC addressing, and LAN topology for modern switched networks.
Networking
Learn how the Physical and Data-Link Layers power Ethernet and Wi-Fi communication. Understand frame encapsulation, MAC addressing, and how these layers ensure reliable, secure LAN connectivity.
Networking
Learn the basics of IP routing and network-layer functions for CCNA. Understand how routers use IP addressing and routing tables to efficiently forward packets.
Networking
Learn how TCP/IP data encapsulation works step by step. Understand PDUs and the differences between frames, packets, and segments for your CCNA exam.
Networking
Learn the key differences between TCP and UDP in the transport layer. Discover how reliability, speed, and connection type impact network performance and application design.
Networking
Discover the history of TCP/IP from ARPANET’s early days to today’s Internet. Learn how this protocol suite revolutionized global networking and communication.
CCNA
Learn how the TCP/IP layers and protocols work together to enable reliable network communication. Explore the roles of the Application, Transport, Internet, and Network Interface layers, and understand how encapsulation ensures efficient data transfer across modern networks.
Networking
The OSI model provides structure; the TCP/IP suite delivers action. Learn how both align across layers to improve design, troubleshooting, and security. Understand real protocol mappings like HTTP, TCP, and IP, and apply layered thinking to diagnose and secure modern networks efficiently.
Networking
Networking interfaces and network cables are the foundation of every wired network. This guide explains Ethernet ports, copper vs. fiber, cable categories like Cat6, RJ45 connectors, PoE, and cable length rules so you can build reliable home, office, or lab networks with confidence.
Networking
Networking interfaces connect devices to networks using copper or fiber cables that shape performance, speed, and distance. This guide explains Ethernet categories, PoE, and best practices for selecting and maintaining reliable cabling.
Networking
Learn the difference between routers, switches, and firewalls in networking. This beginner-friendly guide explains how each device works using simple examples and Cisco concepts for CCNA study.