In essence, the backbone of 'Cisco' technologies are the company's 'routers', data-switches and controllers. Without these types of devices, information wouldn't be able to pass around networking systems. Just as an Operating-System is required on a PC for it to communicate throughout a network, the actual network-hardware itself has its own language & standards that need to be set-up, maintained and configured. Trouble shooting, on-going re-programming and reconfiguration is critical to maintain the smooth operating of a growing network. With the shift towards full system integration of voice & data in modern day business workplaces (not forgetting armed service and other environments), Cisco is at the pinnacle of all contemporary communications.

There are a variety of accreditation tracks to go onto after finishing your CCNA. Specialist areas including Security, or Wireless Technology could possibly be looked into, or maybe the CCNP (Cisco Certified Networking Professional) which is rather more complex. The step up from CCNA to 'CCNP' is quite significant, so it is sensible to focus on finishing your 'CCNA' initially. You should expect to be employed in a 'Cisco' environment for not less than 12 to 24 months (together with your CCNA certification) before you started to train for the 'CCNP'. There can be certain exceptions to this, especially if you've worked in the industry for some time, & have equivalent accreditation covering much of identical information (armed forces exams for instance.) The bottom line is that if you are starting in it, no boss will expect you to have got to that level of qualification, and might rightly question your exact understanding, if you've not even been employed in a CCNA role first.

A so-called advisor who doesn't ask many questions - it's likely they're really a salesperson. If they wade straight in with a specific product before getting to know your background and experience, then it's very likely to be the case. Of course, if you've got any previous certification, then it's not unreasonable to expect to pick-up at a different starting-point to a student who's starting from scratch. If this is your first attempt at an IT exam then you may want to cut your teeth on a user-skills course first.

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