Real Estate Agent VS Real Estate Broker- Pros and Cons

[Zachary Sit]

Hello Bigger Pockets community!

I'm just starting out with my online real estate courses and I'm wondering what are the pros and cons are of being a real estate agent versus being a real estate broker. I live in California and from what I've read, you need to be an agent for at least 2 years before becoming a broker, but can circumvent that if you have a 4 year degree (which I have). From all of your experiences, I would love your personal input on the pros and cons of the two. 

I currently have a mentor who says being an agent is sufficient and doesn't feel the need to go after her broker's license. But as I chat with other agents, I've repeatedly heard, "why don't you just go for your broker's licence?" 

So I wanted to reach out to the greatest community in the world as see what else had to be said!

(... and just like any test that I've ever taken, I must ask, is the real estate agent exam hard?)