The Open Systems Interconnection (OSI) model began as a reference model, but has since been implemented. It was created by the International Organization for Standardization (ISO) to provide a logical framework for how data communication processes should interact across networks. Standards were created for the computer industry allowing different networks to work together efficiently.
We've all done it - Forgotten or misplaced a password. This happens quite a bit with equipment or systems that are not accessed regularly.
What Is CIDR?
When you''re preparing to pass the BSCI exam on the way to the coveted Cisco CCNP certification, you can be quickly overwhelmed by the sheer amount of BGP and OSPF knowledge you must demonstrate a mastery of. One set of details that some BSCI and CCNP candidates underestimate are the differences between the OSPF router types.
Cisco's Internetwork Operating System (IOS) software platform is implemented on the varied hardware used in this course. It is the embedded software architecture in all of the Cisco routers and is also the operating system of the Catalyst 1900 series switches.
Occasionally, during your CCNA and CCNP studies, you'll run into a term that just doesn't quite make sense to you. (Okay, more than occasionally!) One such term is "reverse telnet". As a Cisco certification candidate, you know that telnet is simply a protocol that allows you to remotely connect to a networking device such as a router or switch.
Mark variables/functions as readonly.