I'm not sure what kind of plant this is. At one point it was rather large but then died after I left an irresponsible plant waterer while on vacation. I've brought it back to life and it seems to be doing well, but I notice that there are white dots on the leaves that I never saw in the past. Is it sick? is it a pest? or am I not caring for it properly. (its indoors near window, gets watered once a week)

Thanks in advance

Image link: {{!gwi}}