The 0-255 range applies to which part of IP addressing?

The 0-255 range applies to which part of IP addressing?

• A. The 0-255 range applies to IPv4 octets.
• B. The 0-255 range applies to IPv6 segments.
• C. The 0-255 range applies to MAC addresses.
• D. The 0-255 range applies to port numbers.

Answer: (A)

Each IPv4 address is made of four numbers separated by dots, and each of those numbers is an octet of 8 bits. An 8-bit value can represent 2^8, which is 256 possible values, ranging from 0 to 255. So the 0-255 range applies to IPv4 octets. IPv6 uses 16-bit hex blocks, so their values go from 0 to FFFF (0 to 65535 in decimal). MAC addresses are hardware identifiers, not the IP address structure, and port numbers live in the transport layer, ranging up to 65535. Therefore, the 0-255 range specifically matches the IPv4 octets.

Each IPv4 address is made of four numbers separated by dots, and each of those numbers is an octet of 8 bits. An 8-bit value can represent 2^8, which is 256 possible values, ranging from 0 to 255. So the 0-255 range applies to IPv4 octets. IPv6 uses 16-bit hex blocks, so their values go from 0 to FFFF (0 to 65535 in decimal). MAC addresses are hardware identifiers, not the IP address structure, and port numbers live in the transport layer, ranging up to 65535. Therefore, the 0-255 range specifically matches the IPv4 octets.