IA exam content is very simple, the exam subject is only one, and all are multiple choice questions, more importantly, there is a question bank. The role of the question bank is very big, even if you are a zero base beginner, master of the IA technology is not much, only purely memorize the question bank is also can pass the test. From this we can see how difficult the HCIA exam is, and how much gold it contains. Although HCIA certificate is not recommended to test, but the technical content involved in the IA is very important, if you master it well, you can basically get started with the net work. I recommend the HCIE certificate, and then not good, how to HCIP start, to see how the gold content of IP and IE: IP's gold content is higher than IA, but not as good as IE. if the future of the work requirements are not great, the job treatment is not much demand, in the second and third tier cities work development, then you can choose IP certificate. But if you want to go to a first-tier city to make a big splash, the IP will struggle, and you'll need the IE certificate.