Lets look at CCNA and JNCIA-Junos in terms of knowledge that you gain as an entry level engineer into the realm of TCP/IP. I can garuntee that the rabbit hole goes deep, too deep to be accurate (that is still subjective term. I fail to see how subjective term can be accurate, lol).
JNCIA-Junos is not the best certificate for entry level engineers from my prospective. Why? here are the reasons although they are few. First, it assumes you are familiar with Cisco devices and Cisco CLI. Second, It is exam to for Junos and Juniper. It assumes you already learned or familiar with TCP/IP. I think any entry level certification should cover the topics of TCP/IP. The foundation of the Network, the OSI layers, Subnetting, IP addresses.
I think the biggest concern i have with entry level certificates is that basic of TCP/IP should be covered, and the exam should focus on it. It should not focus on How to run Junos. If i hire a network engineer who knows how to use Junos, but he has no clue of Networking, what use i have of him? Yes, the certification does require you to have the basic knowledge. But from what i gathered in the studying guides, they are not covered in the exam.
Once i pass the exam, I’ll update this entry, or make a new one. Just to be sure that I’m representing accurate facts.