Why is my Connection string template very different from yours?

In my case, at this stage I see the following line:

mongo “mongodb+srv://cluster0-y9fju.mongodb.net/test” --username

Is this the primary node in the string or the name of repica set? Can you explain this?

In the lecture, I see all the hostnames of the nodes in your replica set for YOUR sandbox cluster and connection parameters(username and password).
Is it normal that my string is very different from yours? Thanks!

It should not matter I think. I too got same string as yours. Probably lecture video was done some time back, while we are working with latest versions of tools, portal etc.

I found the answer. This type of URI is called called an SRV string.