Ruijie certifications represent vendor-oriented credentials focused on enterprise and service-provider networking technologies commonly used in modern IT environments. At a high level, these certifications typically address core domains such as network infrastructure design, routing and switching fundamentals, wireless networking, network security concepts, and the deployment, operation, and troubleshooting of network solutions. Candidates are generally expected to demonstrate understanding of TCP/IP principles, device configuration, network management practices, and problem diagnosis within real-world scenarios. Preparation often requires both theoretical study and hands-on familiarity with network equipment and operational workflows. These certifications are commonly pursued by individuals aiming for technical roles such as network support engineer, network administrator, implementation specialist, or roles involving ongoing maintenance and optimization of organizational networks, and they can also support career progression toward more advanced network engineering responsibilities.