Most endoscopies are done under what is called conscious sedation. This means you are not completely asleep and are breathing on your own, but are generally not aware of what is happening. In certain circumstances, an endoscopy can be done under general anesthesia, but this is not the norm.

They always put you to sleep during this. You will not be awake for them to do A-scope either in the rectum or the one that's down the throat. you must be asleep otherwise they cannot perform it.

Yes IV sedation is standard for most endoscopies.