Which two statements are true of a network mask? (Choose two.)
A . A subnet mask specifies the portion of an IP address that is in a binary format.
B . A subnet mask specifies the portion of an IP address that is in a decimal format.
C . A subnet mask specifies the portion of an IP address that represents a network prefix.
D . A subnet mask specifies the portion of an IP address that represents network hosts.
Answer: C, D