L1, L2 Visa

As many people posted here, process at VAC is very simple and it will not take more than 30mins of your time. Docs required at VAC are original passport, copy of interview confirmation letter, copy of DS-160 confirmation page(Note- you can make changes to DS-160 for any number of times but make sure you submit the latest document to them.)

At Consulate the process takes minimum of 1hr time if you are going as individual/dependents without younger child. If you are going as individual/dependents with baby/younger child then the process will not take more than 30mins.

There was a 35+ yr old lady was VO and Below were questions asked for me

VO: Good morning! how are doing today?
me: Good morning!. I am doing good. how are you?
VO: Please pass on your passports....
me: I about to take my passport then she said please pass on all of docs passport, 3 sets of I-129s with 1 page of I-797, visa fee receipts. So slide over all the docs to her.
VO: oh! you work for ZZZ?( after looking at my doc)(one of the top MNC IT service company)
me: Yes!(little smile on my face)
VO: your job title in ZZZ?
me: told my designation.
VO: who is your client?
me: told the client name.(one of the US bank)
VO: how long u work for YYYY company?
me: I work for YYYY for the last 5 yrs.
VO: so what exactly you are going to do for ur client?
me: I am going to customize and integrate my company's proprietary tool with the client infrastructure.
VO: what ur specialization will do?
me: It will provide an optimized solution for handling big data management problems.
VO: how long u work for this client
me: last 3 months.
VO: what is US salary in USD?
me: it is 76k per annum.

then she said sorry sir ur visa is not clearly approvable. Thanks for ur patience and time on this bla bla... I didn't hear anything after she started stamping ...

It was so quick and it completed less than 30secs. I prepared a lot and spent lot of time and effort to crack this interview but that 30secs made my day feel worst.

I am not sure exactly what went wrong but I believe I answered very short. People who read this post please let me know what went wrong here. my ans?.. my company?.. my sal? or my exp? but I have 7yrs of overall exp in IT.

Also please let me know ur ans for my below questions.
1) How long I need wait before apply for other category of visa as my blanket is rejected now.
2) Let me know what could be reason for my above rejection.
3) If I am going to apply for L-1B individual then let me know the pros and cons for the same.