Router
All layers - but to the greatest extent, the distinctive work done by the router - specifically, routing packets - corresponds to layer 3.
Yes, they are devices that operate at different layers of the OSI model for networking.
OSI
Router works in Network Layer of OSI model
There are seven layers in OSI model.
The OSI Model stands for Open Systems Interconnection. The answer to the question which layer of the OSI model are layers capable of functioning is at all layers.
seven layers
That is a loaded question...it depends on what you mean by gateway. I proxy server can be a gateway so can a router. Typically, its gateway=router. check this chart out: http://www.geocities.com/SiliconValley/Monitor/3131/ne/osimodel.html I consider it on the Network layer. Let me know if this helps! Thanks, Eric Elliston President of Elliston Consulting http://www.ellistonconsulting.com
what osi layers use telnet connections for remote use
application -top of osi model physical- bottom of osi model
ping checks the physical -> data -> network layers. It uses ICMP