When I attend a Zoom meeting, should I need to enter from URL?

The Zoom host will be able to see who is coming in and out of the room and how long they have been there.
Also, if they are able to view the lecture, it will be recorded in Zoom.

Even if you use your meeting ID and password, your attendance will be recorded in Zoom, so if your attendance is recorded in Zoom, it will not affect your attendance.
(Please note that attendance will be handled differently depending on the lecture.)

We recommend that you check with your instructor to make sure that you are attending the class.