The correct answer is C. An IPv4 address is 32 bits long.
An IPv4 address is a 32-bit number that is used to identify a device on a computer network. It is typically written in decimal form, with each of the four numbers separated by a dot. For example, the IPv4 address of Google’s website is 172.217.16.254.
IPv4 addresses are divided into two parts: the network portion and the host portion. The network portion identifies the network that the device is on, and the host portion identifies the specific device on that network.
IPv4 addresses are assigned by the Internet Assigned Numbers Authority (IANA). IANA is responsible for allocating IP addresses to organizations around the world.
IPv4 addresses are running out, and IPv6 has been developed as a replacement. IPv6 addresses are 128 bits long, which provides a much larger address space than IPv4.
Here is a brief explanation of each option:
- Option A: 8 bit. This is the number of bits in a single byte. An IPv4 address is four bytes long, so it would be 32 bits long.
- Option B: 16 bit. This is the number of bits in a word. A word is two bytes long, so an IPv4 address would be eight bytes long.
- Option C: 32 bit. This is the correct answer. An IPv4 address is four bytes long, so it is 32 bits long.
- Option D: 64 bit. This is the number of bits in a double word. A double word is four bytes long, so an IPv6 address would be sixteen bytes long.