Category: CCNA

CCNA 200-125 1.2: Compare and contrast TCP and UDP protocols (LAB)

TCP is a full-duplex, connection-oriented, reliable and accurate protocol. It’s not a simple task to do all of those things and the cost is additional overhead. If a TCP packet is not received, the hosts will communicate this and the sending host can send the packet again. Before transmitting, a sending host establishes a connection […]

CCNA 200-125 1.1: Compare and contrast OSI and TCP/IP models (LAB)

The OSI model is a reference for describing the functions of a communication system. The TCP/IP model describes general guidelines for designing and implementing computer protocols. The OSI model Physical Data Link Network Transport Session Presentation Application TCP/IP model Network Access Layer (Physical and Data Link Layers in OSI) Internet Layer (Network Layer in OSI) […]