TCP UDP
Connection-oriented – requires that a connection with specific
agreed-upon parameters be established before data is sent.
Connectionless – requires no connection before data is sent.Learn the basics for using Packet Tracer to simulate and visualize networked devices and things. IT Essentials. CCNA Routing and Switching. Prepare for the latest Cisco CCENT and CCNA Routing and Switching Certification exams
VIRL is Cisco's powerful network simulation platform. Cisco virtual machines running the same network operating systems as used in Cisco's physical routers
Free Cisco labs for CCNA, CCNP and CCIE students! ... Below you will find all CCNA, CCNP and CCIE R&S labs that you are looking for, if you have trouble