CCNA (Cisco Certified Network Associate) is the primary level of Cisco certification, on behalf of the individual holding the certification has the basic network knowledge and skills.CCNA certification covers a variety of areas such as routing and switching, security, wireless networks, data centers, etc., and is the basic certification to enter the field of network engineering.CCDA (Cisco CCDA (Cisco Certified Design Associate) is Cisco's design professional certification, which represents that individuals holding this certification have knowledge and skills in network design.CCDA certification focuses on the theory and practice of network architecture and design for network designers and network engineers.CCDP (Cisco Certified Design Professional) is Cisco's advanced design professional certification, representing that individuals holding this certification possess skills in advanced network design and planning.The CCDP certification requires candidates to have an in-depth understanding and ability to apply themselves when designing complex enterprise-class networks.CCNP (Cisco Certified Network Professional) is Cisco's CCNP (Cisco Certified Network Professional) is Cisco's professional-level certification, representing that individuals holding this certification possess intermediate to advanced networking knowledge and skills.CCNP certifications are divided into different specialty paths, such as routing and switching, security, wireless networking, and so on, with a focus on in-depth study and practice in a specific area.CCIE (Cisco Certified Internetwork Expert) is the top-level Cisco certification, representing that individuals holding this certification possess in-depth study and practice in a specific area. CCIE (Cisco Certified Internetwork Expert) is the top Cisco certification, representing that individuals holding this certification have superior expertise and skills in the field of network engineering.CCIE certifications are divided into different specialization paths, including routing and switching, security, wireless networking, etc., and require candidates to pass rigorous lab exams to demonstrate their competency in designing, deploying, administering, and troubleshooting complex network environments. These certifications represent Cisco's assessment and recognition of networking professionals at different levels and domains. Holding these certifications enhances one's career competitiveness and demonstrates in-depth understanding and mastery of networking technologies and solutions.