How to apply for Network Security Engineer

I would like to apply for network security engineers,

although from the Internet to find a lot of the certification, but training must be certified.

If the self-study, there is no national certification examination?

whether there is a specific test of time? how to apply ~

friends hope to help answer the next question in the hearts

Some,
examination time seems to be in June and December test it.
Must be trained.

, Should be charged.About 200 – 300 of the National Bar Computer Technology and software professional and technical qualifications
proficiency test, also known as soft
test a similar system, there are software engineers, and other analysts
in the first half of May in the second half of November
can also go online registration Designated registration sites