When describing an IPv4 address, which characteristic is accurate?

When describing an IPv4 address, which characteristic is accurate?

• A. It consists of 128 bits
• B. It is divided into four octets
• C. It is written in hexadecimal format
• D. It is 16 bytes long

Answer: (B)

An IPv4 address is accurately described as being divided into four octets. Each octet represents 8 bits, making a total of 32 bits for the entire IPv4 address. This structure allows for the representation of the address in a format that is easy for humans to read and use, typically expressed as four decimal numbers separated by periods (for example, 192.168.1.1). This segmentation into octets is essential for various networking tasks, including subnetting and routing. The reference to octets highlights how the address is organized into manageable units, facilitating easier understanding and manipulation of the binary representation behind the scenes. The characteristics mentioned in the other options do not accurately describe an IPv4 address: it does not consist of 128 bits (that's the length of an IPv6 address), it is not written in hexadecimal format (IPv4 uses decimal format within its standard notation), and it is not 16 bytes long (an IPv4 address is only 4 bytes long, corresponding to its 32 bits).

An IPv4 address is accurately described as being divided into four octets. Each octet represents 8 bits, making a total of 32 bits for the entire IPv4 address. This structure allows for the representation of the address in a format that is easy for humans to read and use, typically expressed as four decimal numbers separated by periods (for example, 192.168.1.1).

This segmentation into octets is essential for various networking tasks, including subnetting and routing. The reference to octets highlights how the address is organized into manageable units, facilitating easier understanding and manipulation of the binary representation behind the scenes.

The characteristics mentioned in the other options do not accurately describe an IPv4 address: it does not consist of 128 bits (that's the length of an IPv6 address), it is not written in hexadecimal format (IPv4 uses decimal format within its standard notation), and it is not 16 bytes long (an IPv4 address is only 4 bytes long, corresponding to its 32 bits).