Which is better for cat exam preparation?either a class room course or online course for fresher.

Hello
Before going in for online course or classroom course, one should keep syallbus and interest in mind.Understand the syllabus by going through past years papers and official guidelines. CAT can be segmented into four broad parts-

Quantitative Ability
Data Interpretation
Logical Reasoning
Verbal Ability

The concepts used in this examination are broadly of class 10 level. However, the questions are little bit tricky to solve and require good amount of logical thinking. Butit can be developed by practice.
There are many online platforms like byju app, 2iim and others are there. For classroom courses there are TIME, CL,  etc.
I wish you all the best.
Cheers !!

It totally depend on your ease of understanding and the time you have for coaching classes.

If you want to join classroom coaching you can join TIME, CL, IMS. You should visit these coaching and attend some trail classes and see if you can understand in a better way. You can also ask the past or present students about the coaching.

If you want to join online coaching you can choose Hitbullseye.com, 2IIM, Iquanta etc or join test series of TIME, CL, IMS Etc and attend some demo classes.

Then you can take a call accordingly.

All the best!

It all depends upon your prior knowledge pertaining to the topics and concepts being checked in CAT.
If you feel you are acquainted well with those basic concepts and are capable of managing your time well in practicing all the three sections appropriately along with giving mocks and analysing them, then yes online course is good.
With classroom teaching, an added benefit is the personal care and guidance that you can get from your teachers who will be a close observant of your mistakes and can guide you better. Classroom teaching, though, is a traditional pedagogical tool yet is very effective for someone who is not so accustomed to the virtual interface of online teaching.
Ultimately, it all depends upon your comfort.
Even if you enroll yourself to classroom platforms, you will anyway have to give tests online only so your ultimate practice for CAT will be via online test series of the particular coaching centre.
Following are few guidelines  that you can consider while making your choice:
*Your clarity of concepts to be asked in CAT
*Your compatibility with virtual learning (in the past, how comfortable have you been with online learning)
*Your time management (fixed amount of time that you can give for online preparation because a classroom course will mandate you to attend classes at a fixed time, however an online course will give you flexibility so you might miss out at times)
*where do you fit better? : classroom discussions and other  offline open discourse like in library, etc or online platform's timed discussions.
In the end, the decision must match your comfort level. Take a decision that will ultimately bring the most productive output out of you.
All the best!!