CCNA

A Cisco Certified Network Associate (CCNA) manages local area networks (LAN) and wide area networks (WAN) that use Cisco routers and switches. This can involve setting up network hardware and configure network devices. CCNA responsibility also includes Network security. At the start of career you will be employed on network devices monitoring. CCNA also identify and solve issues that affect network performance, which can require unusual work hours and overtime. At the start of your career you may have to work in shifts. CCNA will require continuing education and training in order to maintain certification and pursue more advanced Cisco credentials.

The CCNA is an entry-level, single-exam certification that establishes basic knowledge of TCP/IP protocols, ports, services, plus router and switch settings, configuration, and best practices.
CCNPs are more senior than CCNAs, and usually have more experience and thus also make more money. Because you can't get a CCNP without first getting a CCNA.
Cisco Certified Network Professional (CCNP) Routing and Switching certification validates the ability to plan, implement, verify and troubleshoot local and wide-area enterprise networks and work collaboratively with specialists on advanced security, voice, wireless and video solutions
Cisco Certified Network Associate (CCNA) certification demonstrates your knowledge to deploy, maintain, secure and operate a medium-sized network using Cisco technologies. The Cisco CCNA is a prerequisite for the below specialist certifications.
CCNA first step towards a career as a network administrator or engineer.
With the CCNP your career will be as a network engineer or architect.