IPv4 octets have what range?

IPv4 octets have what range?

• A. 0 to 255
• B. 1 to 255
• C. 0 to 100
• D. 0 to 1024

Answer: (A)

IPv4 addresses are four numbers separated by dots, and each number is an octet consisting of 8 bits. An 8-bit value can represent 2^8, or 256, different patterns, which correspond to the numeric values 0 through 255 inclusive. So the range for a single IPv4 octet is 0 to 255. The other options miss either a valid value (0) or exceed what eight bits can store (0 to 1024), or pick a smaller range (0 to 100). Remember, 255 is the maximum value for an octet, and while it has special use in some subnet contexts, the octet range itself remains 0–255.

IPv4 addresses are four numbers separated by dots, and each number is an octet consisting of 8 bits. An 8-bit value can represent 2^8, or 256, different patterns, which correspond to the numeric values 0 through 255 inclusive. So the range for a single IPv4 octet is 0 to 255. The other options miss either a valid value (0) or exceed what eight bits can store (0 to 1024), or pick a smaller range (0 to 100). Remember, 255 is the maximum value for an octet, and while it has special use in some subnet contexts, the octet range itself remains 0–255.