True or false

1.during troubleshooting a computer you are device to remove all other related to avoid damage on a computer related equipment

2.troubleshooting while the computer is plugged into their power source is a good practice .

3.wearing of shoes with non conductive rubber soles used to help minimize the change of being shocked or seriously injured in an electric accident.

4.is it necessary to remove expansion cards from a computer when it is turned on ?

5.it is a good practice working in an environment which electronic components and water is being joint .​