tell me about CCNA .i have completed engineer in 2009 and currently working as RAN engineer in a telecom company ,i want switch to N/w

Cisco Certified Network Associate (CCNA) certification validates your ability to install, configure, operate, and troubleshoot routed and switched networks. CCNA certified professionals can make connections to remote sites via a WAN, mitigate basic network security threats, and understand fundamental wireless networking concepts & terminology. CCNA certification is the most popular Cisco credential, and the globally recognized mark of a competent network technician. Becoming CCNA certified is a distinctive first step toward a rewarding career as a network administrator or network engineer. Key knowledge areas and skill sets measured by the Cisco CCNA certification exam include: CCNA certified professionals:- understand how different network topologies interact to form a secure network. can explain how a network works and how the network interacts with network devices. can configure, verify, and troubleshoot a switch with VLAN & interswitch communications. can implement an IP addressing scheme and IP Services to meet network requirements. can configure, verify, and troubleshoot routing and router operations on Cisco devices can identify network security threats and describe appropriate threat mitigation methods. contd.

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