Hey guys, I'm getting ready for my CCNA exam as well (hoping to take it next week or the week after). I was just wondering if there was some sort of online Router simulator where there is a preset scenario and you can just practice console commands on a cisco router or a switch?
I know there are several router simulations for download but I was just wondering if there was an online version of this. I know the basics of the Cisco IOS but I am more of a "hands-on" kind of guy and I learn better by 'doing' instead of 'seeing'

I'm sure some of you can relate to what I'm saying.
Anyways, any help on this matter would be greatly appreciated and if not well thanks for replying!