Delete with identity reset

I am dropping the rows but insertion start with next to last max identity . Something was missing in my knowledge. To reset Identity i have use one extra statement, other option is use trunc  statement to drop rows.  but if i have too drop rows with delete statement and reset the identity what should do,   i have to use

DBCC CHECKIDENT("table_name", RESEED, "reseed_value")

This will reset identity back to 1. for example

DELETE from tblstudent;


DBCC CHECKIDENT("tblstudent, RESEED, 0)