CET-4 is the abbreviation of CET-4. It is a national teaching examination hosted by the Higher Education Department of the Ministry of Education. The main target of the examination is college students, undergraduates or graduate students who have completed CET-4 according to the educational syllabus.

CET-4 also refers to CET-4, which is the highest level of the national computer rank examination. Subjects include: four-level operating system principle, four-level computer composition and interface, four-level database principle, four-level software engineering and four-level computer network. Two subjects are randomly selected from the subjects taking the exam, and those who pass at the same time are qualified. The examination time is 90 minutes. Computer Band 4 is the same as an international MBA.

The computer level integer is divided into four levels, and the fourth level is the highest.

Level 1: Check basic computer knowledge and computer operation ability, including office software and graphics software. ?

Level 2: Advanced application level of programming/office software. ?

Three levels: divided into "software testing technology", "basic knowledge of microcomputer information security evaluation and basic skills of using office software and Internet".

Level 4: divided into network engineer, database engineer, software testing engineer, information security engineer and embedded system development engineer.