All stations connected to a repeater are in the same XXXXXXX domain. All stations connected to a switch are in the same YYYYYYY domain. What are XXXXXXX and YYYYYYY$?$

$xxxxxxx=$ layer$3,$ YYYYYYYY$=$layer$2$

$xxxxxxx=$ collision, $YYYYYY=$ broadcast

$xxxxxxx=$ layer$2,$ YYYYYYY$=$layer$3$

$xxxxxxx=$ broadcast, $YYYYYY=$ collision