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Cisco Certified Network Associate (CCNA®) validates the ability to install, configure, operate, and troubleshoot medium-size route and switched networks, including implementation and verification of connections to remote sites in a WAN. CCNA curriculum includes basic mitigation of security threats, introduction to wireless networking concepts and terminology, and performance-based skills. This new curriculum also includes (but is not limited to) the use of these protocols: IP, Enhanced Interior Gateway Routing Protocol (EIGRP), Serial Line Interface Protocol Frame Relay, Routing Information Protocol Version 2 (RIPv2),VLANs, Ethernet, access control lists (ACLs).

Recertification

CCNA certifications are valid for three years. To recertify, pass ONE of the following before the certification expiration date:

Pass the current ICND2 exam, or
Pass the current CCNA exam, or
Pass the current CCDA DESGN exam, or
Pass any current CCNA Concentration exam (wireless, or security, or voice, or SP Ops), or
Pass any current 642-XXX Professional level exam, or
Pass any current Cisco Specialist exam (excluding Sales Specialist exams or MeetingPlace Specialist exams, Implementing Cisco Telepresence Installations (ITI) exams, Cisco Leading Virtual Classroom Instruction exams, or any 650 online exams), or
Pass any current CCIE Written Exam, or
Pass the current CCDE Written Exam OR current CCDE Practical Exam, or
Pass the Cisco Certified Architect (CCAr) interview AND the CCAr board review to extend lower certifications.

CCNA Syllabus.

CCNA more information.