Questions

Log shipping defines the process for automatically taking backup of the database and transaction files on a SQL Server and then restoring them on a standby/backup server. This keeps the two SQL Server instances in sync with each other. In case production server fails, users simply need to be pointed to the standby/backup server. Log shipping primarily consists of 3 operations:

Backup transaction logs of the Production server.

Copy these logs on the standby/backup server.

Restore the log on standby/backup server.

Humming bird is the smallest bird and the only bird which can fly in backwards in the world.

A lower CPA may be accompanied by lower sales volume, reducing overall profit.

An ionic bond is formed between two molecules when transfer of valency electrons take place between them. 

Among the given options, CH4 is a non polar molecule with symmetrical tetrahedral shape.

The trick here is to follow the structure of the statement. The blank is followed by 'of' and thus the blank will take a filler that can be followed grammatically by 'of' and also manages to give a proper meaning. On the basis of these filters, none of the options except option 2 makes any sense.