Hey as per my idea there is no restriction in giving CAT exam and here I am giving you its details

About CAT
Common Admission Test(CAT),),is the entrance examinations for the entry into the MBA courses of the various Business schools across the country,with CAT being the most premier of the entrance tests.

Eligibility
Candidate should be graduate from recognised university
Final year candidate can also apply
Candidate can be of any stream

No. Of attempts:
There is no restriction in the number of attempts, and a candidate can appear any number of times he wants.

Sections in CAT
Aptitude
Data interpretation
English
Reasoning

Exam pattern
The total duration for the exam was 180 minutes and had 100 questions.
Candidates were not allowed to switch between sections, unlike previous year.
For the first time in the history of CAT, applicants were allowed to use an on-screen calculator for calculations.
Also, some Type In The Answer (TITA) type questions were introduced, wherein candidates had to type the answers to those questions in a box provided.