I asked a question yesterday and it got closed with 2 negative votes, I am not sure why it has been closed and how can I improve it,

http://serverfault.com/questions/510940/what-should-my-ip-address-be-for-my-dns-or-how-can-i-set-it-up


whereas there is a similar questions with +1 and +3 vote(s) and they are even not closed, there's just minor differences, 

http://serverfault.com/questions/2557/how-do-you-set-up-dns-in-window-server-2008-in-a-hyper-v-environment

http://serverfault.com/questions/38238/what-dns-records-should-i-set-up-for-a-new-server?rq=1