I just bought a new Dell 5160 notebook. The sales guy said that it has vga
port to connect an external monitor.

If I connect an external monitor,
1. will it be a 2nd monitor like a dual monitor capable adapter (or)
2. Will my notebook display blackout and I will have to view the external
monitor (or)
3. Will the notebook display and external monitor display exactly the same
screen.

Thanks.