An IPv4 address is expressed as a:
A) 32-bit number that appears as a series of four separate numbers separated by semicolons.
B) 64-bit number that appears as a series of four separate numbers separated by semicolons.
C) 64-bit number that appears as a series of four separate numbers separated by periods.
D) 32-bit number that appears as a series of four separate numbers separated by periods.
Answer: D) 32-bit number that appears as a series of four separate numbers separated by periods.