How many bits are in an IPv4 address?
Answer
32
IPv4 addresses contain 32 bits, usually written as four decimal octets such as 192.0.2.1. IPv6 expanded the address to 128 bits because the IPv4 space ran short.
| Category | Technology |
|---|---|
| Difficulty | Medium |
| Other options in the game | 16, 64, 128 |
| Source | IETF Internet Protocol reference |
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