In order to have Internet access, what is the name of the chip that sends/receives the data [might be internal or external to the computer]? If I wanted to use the laptop for mapping directions using...

In order to have Internet access, what is the name of the chip that sends/receives the data [might be internal or external to the computer]?

1. If I wanted to use the laptop for mapping directions using GPS, what are the limitations?

1. What might you do to mitigate hard drive failures?

1. For office use, what can I do to mitigate power failures?

1. For office use, what can I do to protect my computer from power surge?