Given name ,surname

[s_raghu77]

Hi

I have an SSN card already with the data: RAGHURAM SRINATH.

In my Visa (I am supposed to get it today) the name may come as:
RAGHURAM SRINATH, FNU
In my new passport the Given Name is : RAGHURAM SRINATH and Surname is blanks. I have 2 questions

1. What should I fillup in Name/Family name field in I-94 when I enter US?
2. While applying for a DL in North Carolina State should I enter the names exactly as in Passport or should it be :
Given name :RAGHURAM
Last name :SRINATH.
I mean same as SSN card?

Kindly advice

Thanks
Raghu