it is compulsory to attend all the online lectures in online mca

Well, it is more dependent on your university whether they have imposed any compulsion on attendance in the online classes or not. However, most of the online MCA universities offer their learners unlimited access to recorded lectures without forcing them to attend the live classes at any fixed schedule. This makes their online MCA programs truly flexible.

If you want to explore such universities, visit College Vidya right now!