It depends on your own situation. There are five majors in the intermediate communication engineer exam: transmission and access, equipment environment, switching technology, internet technology, terminals and services. Choose a major at will to enter oneself for an examination, and you can get the certificate of intermediate communication engineer through a major.

General examination content of transmission wireless specialty: wireless communication principle, wireless communication system structure and key components, mobile communication principle, microwave and satellite communication principle; The structure, characteristics and key technologies of each generation of mobile communication systems actually deployed in the current network, including wireless access and IP multimedia subsystem; Wireless communication technology in the Internet of Things: the structure and key technologies of microwave transmission system and satellite communication system.

The most important thing in the exam is to adhere to the combination of learning and law. The "Communication Engineer Examination" APP can be found out. The question bank and video are relatively complete, which should be helpful for the exam.