MongoDB restore with replica set

I have MongoDB setup like this: Primary | Server1 -----------+--------- Secondary | Server2 -----------+--------- Arbiter | Server3 -----------+--------- Backup | Server4 I have a backup server for daily backup using **mongodump**. Now I have to test my backup dump using **mongorestore**. The main question is the following: What is the best way to restore the backup? Q1: I have to follow these steps? 1. Stop arbiter & secondary 2. Drop database in primary 3. Restore backup to primary 4. Drop database on secondary 5. Restart all the server Q2: Restore the backup on primary without stopping any of the servers? Q3. Make secondary as primary and restore the backup to secondary ( previous primary), and make it primary. Q4: Is there is any way to restore both the server? Please suggest the best approach to restore MongoDB.