I think dogs are curious by nature.
Momiji was very quiet when I got her but now she barks at strange noise or other dog's bark.
Last night there was a dog (and I think it was a small breed dog) barking 2am and she start to join it.
I was going to buy water spray for the barking training but I haven't so I definitely going to get one today just in case the dog is outside again tonight!!
But other than that, Momiji isn't a barker and it is very normal for a dog to bark at strange noise as long as they stop on command!!!
I live in an apartment so I understand your concern.
I think it is trainable so good luck and congratulation on your new furbaby!!!!