90 days
An immigrant Visa is usually valid for 6 months.
The non-immigrant visa number shows up in red ink on the lower-right side of the K-1 Visa.
Depends what visa and what country
Depends what visa and what country
Failure to provide required information may cause delayor denial of immigrant visas.
italy
yes
You are not required a visa if you are going for the purpose of a vacation or a business for not more than 3 months. If you are planning to be there for more than 3 months they yes Visa is required.
No, the F1 visa is not considered an immigrant visa. It is a non-immigrant student visa specifically for international students who want to study full-time at a US-approved college, university, or language school. It does not grant permanent residency and requires you to maintain a student status.
If you are a national of a country which ordinarily requires a visa to visit Austria, then you should apply for a Schengen visa at the Austrian embassy before you travel there.
Visa is a document required to enter any foreign country. US Green card is immigrant visa which allows you to live and work in US.While other types of non-immigrant visas like B-2 tourist visa,F-1 Student visa etc can be used to stay in US till it expires or until the purpose of your visa is complete.
"A" number, if its referred to Alien number, then non-immigrant workers on that status do not get "A" numbers.