You also show that you possess the theoretical knowledge that the Juniper ecosystem of certs requires. There are other benefits too, potentially. Certification could help you to get a promotion or a pay raise because you've validated that you have in-demand skills. Once you have gotten started down this certification track, more doors will open in your career as you build up your skills and qualifications.
As mentioned earlier there are no required prerequisites for this exam. If you have previous experience with basic networking concepts or certifications like CompTIA Network+, then that will make your exam prep much easier. But this is not a requirement.
The Juniper Networks Certified Associate certificate (JNCIA) is the entry-level credential required to continue to the advanced certifications in our Junos certification tracks. Successful candidates demonstrate knowledge of the Juniper Networks Junos OS, networking fundamentals, and basic routing and switching with Juniper routers
Designed for experienced networking professionals with beginner-intermediate knowledge of networking, this written exam verifies the candidate's understanding of the Juniper Networks Junos OS, networking fundamentals and basic routing and switching.
The JNCIA-Junos assumes that you have little to no experience in networking and routing. Therefore, it emphasizes networking fundamentals and Juniper-specific methods. This certification is a starting point for many people, so it is not reliant on having prior certifications.
More info: what is f5
