The core exam focuses on your knowledge of enterprise infrastructure including dual-stack (IPv4 and IPv6) architecture, virtualization, infrastructure, network assurance, security, and automation. The core exam is also the qualifying exam for CCIE Enterprise Infrastructure and CCIE Enterprise Wireless certifications. Passing the core exam will qualify candidates to schedule and take the CCIE lab within the validity of their core exam.
Concentration exams focus on emerging and industry-specific topics such as network design, SD-WAN, wireless, and automation. You can prepare for concentration exams by taking corresponding Cisco training courses.
Required exam Recommended training
350-401 ENCOR Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR)
Concentration exams (choose one):
300-410 ENARSI Implementing Cisco Enterprise Advanced Routing and Services (ENARSI)
300-415 ENSDWI Implementing Cisco SD-WAN Solutions (ENSDWI)
300-420 ENSLD Designing Cisco Enterprise Networks (ENSLD)
300-425 ENWLSD Designing Cisco Enterprise Wireless Networks (ENWLSD)
300-430 ENWLSI Implementing Cisco Enterprise Wireless Networks (ENWLSI)
300-435 ENAUTO Implementing Automation for Cisco Enterprise Solutions (ENAUI)