B1/B2 Visa refused

[AMOOL]

I wanted to attend conference in USA.. for which i applied for USA B1/B2 Visa... and its got rejected. I am not sure where i went wrong.

Q.1. Why you want to go USA?
A : For 'X (MNC compnay name)' conference

Q2. You are a client of 'X' ?
A: YES

Q3. What is your designation ?
A: My Designation is 'A'

Q4. What is your Salary?
A: 'xxx'

Q5. Have you ever been to US or visited any other country?
A: NO

Q6. Wt is your experience ?
A: With my current company 2.5yrs

Q7. What is your Industry exp?
A: 4.5yrs

It was rejected under 214(b) section. She didn't asked anything to show (invitation letter and all).

Now, i am not immediately re-applying for the Visa. But may b after 6-10 months.. for some other conference.

My queries are :

1.Where i gone wrong? Was it because of less industry experience or never visited to any other county?
2.Will this refusal affect my next interview for same country or if I apply for any other country ?
3.How should i prepare myself for next time?

Thanks for your help in advanced

Regards,,

[inadmissible]

Visit some other countries first

[AMOOL]

Thankyou

Visit some other countries first

Thankyou Inadmissible for your valuable comment.

Travel history could be the only reason of refusal? or is there any other mistake that i have done in this conversation.

Many thanks once again