I've visited India several times. (But not yet Bangalore...) I love your country
About your query, Tableau advised to test following checker before test.
And their recommended latency is bellow.
If you have 150 latency it seems to be no problem.
I took QA test under Med latency(Yellow). I connected APAC server. It was no problem.
p.s. U might be careful to avoid the power failure off course.
Thanks for your reply. I appeared for the examination from home itself and successfully cleared it also.