Appreciate if you can answer some or all of the following questions:
Is it prerequisite to pass CCENT before you can prepare for CCNA exam?
Can you prepare straight away with CCNA without taking CCENT?
I know Cisco text books have a lot of technical jargon. Is there any other GOOD Cisco text books that you can use to pass the CCENT exam and CCNA exam (e.g. Todd Lammle)?
I cannot afford to buy real routers & Switches, is RouterSim good enough to practice routers/switches configuration? Do you have another other simulation offer better than RouterSim?
My approach to prepare Cisco exam like read a recommended text book then practice using RouterSim including watching CBT Nuggets or CBT Trainsignal? Is my approach sufficient enough to pass CCNA?