How many bits are there in total for both 'Source IP Address' and 'Destination IP Address' fields in the IPv4 header?

In an IPv4 header, each IP address is represented by 32 bits. Thus, when you consider both the Source IP Address and the Destination IP Address fields together, the total number of bits is calculated as follows:

32 bits (Source IP Address) + 32 bits (Destination IP Address) = 64 bits in total.

This understanding of the IPv4 header structure is fundamental for networking professionals, as it emphasizes the addressing scheme used in Internet Protocol version 4 and highlights how these addresses are formatted and processed within network communications.