Regular job with regular univresity course

Dear Sir /Madam,

Though is no Legal Query , still i am asking from Legal Professional.

I am software Engineer for last 17 years.Now I am Intended to peruse
M.tech in computer science in regular mode along with my job.
I discussed with college , they told, you can do class in the evening
and week end , but that would not be mentioned in the Certificate.
My question is

1)Doing regular job with regular course is valid ? Will it be problematic in future ?
2)If college give me a statement that i have done weekend class ,
   will it be enough along with university certificate , will it be enough
   to prove bot my job and regular course are valid ?

Thanks
Ayan