Computers & IT (Non-Engg)

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.

Dear Khushboo,
Yes, Of course you can take admission in MCA without entrance test but cut-off for admission to this programme varies to different colleges. As you studied mathematics in 10+2, maybe, you will get admission into lateral entry which means that you will get entry into II year of MCA directly. Many good institutions offer this course & provide considerable scholarship also on the basis of your qualifying marks. So, you should try in colleges where you will get quality education, better placement opportunities and good scholarship scheme. I can suggest you some good numbers:-
University of Pune
Lovely Professional University
Birla Institute of Technology
NMIMS University Maharashtra etc.
For more details, just navigate their website.