Cisco CCIE is the highest certification available for IT networking professionals of the country. Being the most coveted, it is also the toughest nut to crack. The course is not just vast but also keeps on changing from time to time. So while what the instructors learned might be correct for that time, it may not be the same in your case.
Cisco Certified Internetworking Expert (CCIE) is arguably the best networking certification offered today and is not easily achievable. It is believed that less than 10 persons out of hundred appearing for the test are able to clear it successfully. This itself is an indicator of its toughness.
The CCIE course would entail the top position among IT certifications and calls for a grueling exam that is more difficult than the CPA exam or the State Bar of California, which is considered the most difficult of all the states. Thats the reason, why many candidates and professionals undergo intensive CCIE Trainingbefore appearing for the test.