For the first time, you can take the national level 3 exam, and the exam topics are based on basic judgment, but level 3 is of little use. On-site competition can only be a third-party referee, which is also one of the inspection contents. With about 50 on-the-spot experience, you can apply for the second-level exam. After passing the second-level written test, you can be an assistant referee on the spot. The first and second level games that want to visit 100 can be registered.

CCA refers to cisco certified architects. In Cisco's CCA certification, CCA will train candidates to cooperate with chief business operations executives to turn business requirements into effective IT systems.