Explanation:

• National Population Register (NPR) is a database containing a list of all usual residents (not only citizens) of the country. Its objective is to have a comprehensive identity database of people residing in the country.
• A usual resident for the purposes of NPR is a person who has resided in a place for six months or more, and intends to reside there for another six months or moreThe NPR was first collected in 2010 and then updated in 2015.
• The census is legally backed by the Census Act, 1948. However the NPR is a mechanism outlined in a set of rules framed under the Citizenship Act, 1955. 

Note: NPR was last updated, except in Assam and Meghalaya, in 2015-16.
Hence both statements are correct.