They have to decide which CLI commands, and which command parameters, to support. The people that create any simulator have to work to reverse-engineer how the CLI works, and how routers and switches work.
So, if you compare the real gear model, in which IOS supplies the CLI, and IOS runs on real hardware, to the Simulator model, you don't need real hardware or the real IOS. All you need is the simulator software - you don't need any router or switch hardware, and you don't need a copy of Cisco IOS. The software runs on commonly-used Operating Systems. For our purposes, a simulator is software that acts like the Cisco CLI. The word "Simulator" can mean a lot of different things, so we need to agree on a definition that works in this context.
In your opinion, can a CCNA candidate with no prior Cisco CLI experience learn enough to pass CCNA using a Simulator?customer surveys
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