Cisco CCNA => Cisco CCNP => Cisco CCIE, corresponding to the network support engineer
Cisco 350-018 Certified Network Engineer, respectively, intermediate network engineers, network specialists, in turn improve the level, only through the previous level of certification exams, are eligible to participate in a level after Cisco (Cisco) certification exam.

Cisco 350-018 exam CCNA exam book is mainly based on knowledge of the network, OSI seven layer model, switching, routing and other simple debugging installation, can go to the bookstore to buy materials review; only one can get the pass, is the easiest; examination test costs about 100 dollars. All questions on the machine, immediately answered the print to get through to you or not.

Cisco CCNP exam four books, the content in more depth on the basis of CCNA, more comprehensive, more difficult, and the corresponding four courses to pass exams in order to get the certificate.

Cisco 350-018 testing engine CCIE hardest, written and operate two points. Relatively speaking, the operation is the most difficult, the examination time was about half a day or so, the cost is about 1 million yuan. Because few people through, it is more valuable. CCIE written test and operations are only just sent through the refraction study.

CCDA => CCDP correspond to the CCNA => CCNP, the difference is that emphasis on network architecture and design, which is corresponding to the pre-sales engineer, network support positions.