dhcp question

in CCNA & CCENT
hi, I am new and i have a question about dhcp could anyone help:
1. Does a router know if it should not assign a broadcast address to a pc? or do we have to tell it to exclude when configuring DHCP? thanks.
2. how can I view the addresses I excluded in dhcp ?
1. Does a router know if it should not assign a broadcast address to a pc? or do we have to tell it to exclude when configuring DHCP? thanks.

2. how can I view the addresses I excluded in dhcp ?