First interview after passing CCNA

So, I've just had my first Assistant Network Engineer interview. The interviewer is a tech consulting firm Manager that "forward/recommend" potential candidates to their clients. Having exactly zero IT academic background and only 2 years of general helpdesk support, my plan was to be honest and show that although inexperienced, but am willing to learn, (just as I got my CCNA in 2 months).

After greeting each other, he began to throw a bunch of big projects that her "candidates" have worked on before. At this point, I've heard so much unknown terms that I was just acknowledging everything that he said without a single clue on what's he was talking about.

Then it came the question of "what do you see in yourself become in the future? what do you hope to achieve? why did you pick networking instead of other IT jobs? (rephrased)". I proceed to answer how I want to gain some hands on experience on networking devices and maybe take CCNP in the next job, I also learn quite fast as I've attained my CCNA relatively fast. Then she said "that's not what I want to hear, I want to hear what you want to become, everyone could have CCNA, everyone could learn fast, so what does someone such as you, without any networking experience have to put on the table, to make me prefer you over someone more experienced?".

I literally just stopped there, I didn't think of the slightest of how I could respond to questions like that. I thought it would just be technical questions on CCNA/networking. It ended, well, you could possibly imagine.

Some advice on how I could better prepare for another interview in the future would be much appreciated!