Network Engineer

Training and on-the-job experience are the only ways to become a network admin. Here are some steps:
Learn about how network protocols help to make a network work properly. L1, L2, L3 and L4.
Ethernet - L2 routing, ARP, STP, etc. IP - L3 routing, RIP, OSPF, etc. TCP/UDP - How packets are built and interact with the network. You would then learn vendor-specific tools/commands to make a network work and route packets correctly. At the end of the day, all networks work the same way, the only difference is what commands specific hardware required to make them work. I would also look into how network services like DNS, DHCP, PXE, etc. Work so you will be able to better troubleshoot issues. * To become a sysadmin you have to do following courses.
1- You should complete your graduation
2- Do A+ hardware course (basics in hardware)
3- Do MCITP course (Microsoft Windows)
4- Now you can find a job in sysadmin easily.
5- If you want a higher course you can go for CCNA, CCNP and security courses.

MCA is most commonly preferred by the graduates after BCA. Those who have completed BCA or Bachelors degree in any discipline are eligible to join for the MCA courses. There are many other options for the BCA graduates in higher studies. They are:
Master of Computer Application (MCA)
Masters in Computer Management
Masters Degree in Information Management (MIM)
Masters in Business Administration (MBA)
Master of Science in Information Technology M.Sc. IT)
G-CAT Master
Postgraduate Diploma in Computer Applications
Post Graduate Programme in Corporate Studies (PGPCS)
Postgraduate Diploma in Management (PGDM)
programme in Information Security Management
You should select a course you feel comfortable doing/studying, and where your interests lie. Regards.

If you're an enthusiast looking for a career in cybersecurity, I believe that you should start by researching about the basic uses and applications of cyber security, follow it up with the function, purpose and perspectives it has in today generation. The skill set is rather vast and demanding for advanced technologies like cyber security and, to become an expert in this field, you will need to master the technical skills like networking, computer programming and such, do not forget, you will also be required to have adequate soft skills such as verbal communication, written communication and presentation skills to expose your work effectively. One way to look at the growth in the field of cyber security is from a learner's point of view. Through security certifications. There are a multitude of certifications based on the category or field of security. Here are a few to name:
Beginner level:
Certified Ethical Hacker - CEH | EC-Council, provided by EC-Council
CompTIA Security+ Provided by CompTIA
Medium to Advanced Levels:
Offensive Security Certified Professional - Provided by Offensive Security. CompTIA CSA+ Provided by CompTIA CyberSecurity Analyst
Similarly, there's CHFI - Computer Hacking Forensic Investigator Certification [Computer Hacking Forensic Investigator-CHFI | EC-Council] for Candidates interested in Forensics - Provided by EC-Council among many more.
2. The next approach is through attending and trying out CTF events - All about CTF (Capture The Flag). These are the perfect platforms to prove your strength and show your skills in the field of cybersecurity. People learn about computer security in a number of ways, all important. For the sake of argument, let's put these in three categories: reading, building, and doing. [Why Should I Play Capture-the-Flag? ]
A Cyber Capture the Flag exercise typically resides in the last of these three categories: DOING. CTF attempts to model the defend/attack experience. Time pressures bring into sharp focus theoretical lessons. Competitive forces expose assumptions and flaws in tools and systems constructed in a vacuum.
3. Bug Bounty programme
A bug bounty programme, also called a vulnerability rewards programme (VRP), is a crowdsourcing initiative that rewards individuals for discovering and reporting software bugs. If finding vulnerabilities is your forte, these are for you. Here's one of the sample available list of bug bounty programs: Bug Bounty List | Bugcrowd.