Networking

Understand the external components of Cisco 1841 Router and learn three different modes User EXEC, Previleged and Global Configuration modes. The front view of the router The above is the front view of the Cisco router. We have the logo in the left side and Router model number on the right side which is Cisco 1841. Next, we have two system LED 1 and 2 as follows: System Power (SYS PWR) LED - No power means off and blinking green means that the router is booting.

When we type google.com in our browser, we see the google home page. We are unaware of the back scene about how the each layer of the protocol works. In this post i will describe, how each of the protocol layer works. First of all let’s see what are the layers involved in OSI and TCP/IP protocols. Layers and their functions of OSI model Layer Task At Layer Application Layer Web browser that the user interacts with.