Arduino to behave as a simple switch

Projects Programming
1

Is it possible to program arduino to short two outputs?
Let say I'm controlling one led by simple latching switch. So I remove the switch and connect wires to
arduinos analog output 6 and 7.

Can Arduino simply short those two outputs?

I'm not going to control the led this way. This is just hypothetic question…

2

Can Arduino simply short those two outputs?

No.

You will have to use external hardware for this. Maybe the most universal way would be to use an optically isolated FET.