Which department issued the it operation and maintenance certificate?

Country Ministry of Human Resources and Social Security.

The first certificate: computer technology and software professional qualification examination certificate.

This is a national examination led by Ministry of Human Resources and Social Security and the Ministry of Industry and Information Technology. The examination is divided into five professional categories, which are divided into advanced, intermediate and primary vocational qualification examinations, and 28 qualifications are evaluated. It is also the basis for employers to choose suitable professional and technical posts (technicians, assistant engineers, engineers and senior engineers).

The second certificate: Microsoft certification

It is a certificate system for Microsoft to promote Microsoft technology and cultivate talents in system network management and application development. This certificate can be used as an effective proof of salary position change, proof of company qualification and strength, and extra points for immigrants. Most people with this certificate can get a good salary.

The third certificate: Oracle Bone Inscriptions certification.

It is the service and support of an authoritative product promulgated and implemented by Oracle Company. It is specially designed to certify professionals with operational ability and extensive theoretical knowledge. IT is recognized as an IT expert qualification certificate in the industry, and its gold content can be seen.

The fourth certificate: cisco certified.

It was launched by Cisco, a well-known network manufacturer. It is an international authoritative certification in the field of Internet. There are many certifications in cisco certified, such as CCNA, CCDA, CCNP, CCDP, CCSP, CCIP, CCVP, CCIE and so on, with different levels, different contents and different directions. You can get junior, middle and senior network engineer certificates.

The fifth certificate: Huawei certification

It is the network engineer certification launched by Huawei. It is based on the personal career development life cycle of talents in the ICT industry chain, guided by hierarchical professional technology certification, and equipped with Huawei's "cloud-management-end" integrated technology. It is a certification system covering IP, IT, CT and ICT integrated technologies. It provides three levels of technical certification: engineer level, senior engineer level and expert level.