RCDD · Question #217
IPv-4 addresses are ________ bits in length.
The correct answer is C. 32. IPv4 uses 32-bit addresses, a core networking fundamental defined in RFC 791.
Question
IPv-4 addresses are ________ bits in length.
Options
- A16
- B24
- C32
- D48
- E64
How the community answered
(47 responses)- A13% (6)
- B6% (3)
- C79% (37)
- E2% (1)
Why each option
IPv4 uses 32-bit addresses, a core networking fundamental defined in RFC 791.
16 bits is not the length of an IPv4 address; 16-bit addressing is associated with older or specialized protocols, not IPv4.
24 bits corresponds to a common IPv4 subnet prefix length (/24), not the total address bit length.
IPv4 addresses are defined as 32-bit binary values, written in dotted-decimal notation as four 8-bit octets (e.g., 192.168.1.1). This 32-bit length allows for approximately 4.3 billion unique addresses and is specified in RFC 791, the foundational IPv4 standard.
48 bits is the length of a MAC (Media Access Control) address, not an IPv4 address.
64 bits is associated with IPv6 interface identifiers or other constructs, not the full IPv4 address length.
Concept tested: IPv4 address bit length
Source: https://datatracker.ietf.org/doc/html/rfc791
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