Zero.
No collisions can occur within a full-duplex environment, as transmit and receive operations are performed on another set of wires. Thus, no collision domains would exist. Carrier Sense Multiple Access with Collision Detection (CSMA/DC) is not part of a full-duplex network for this reason.
1 broadcast domain and 12 collision domains
Each port will create its own collision domain, so you end up with 12.
If I'm not mistaken switches break collisions domains unless configured otherwise. As result you should have 24 collision domains.
12
A switch creates separate collision domains for each port.
12 collision domain
100000
I think 1
2