In IPv4, what does the 4-bit Version field value of 4 signify?

Study for the Internet Protocol Version 4 Test. Use flashcards and multiple-choice questions, each with hints and explanations. Master the exam with confidence!

Multiple Choice

In IPv4, what does the 4-bit Version field value of 4 signify?

Explanation:
The Version field at the very start of an IP header tells devices which IP protocol version this packet uses. It is 4 bits long, and a value of 4 means the packet is IPv4. That lets the rest of the header be interpreted with IPv4 rules (for example, the next field after Version is IHL, which indicates the header length in 32‑bit words). Other values correspond to different versions: 6 would indicate IPv6, while 5 is an experimental, unused version and 7 is not a standard used today.

The Version field at the very start of an IP header tells devices which IP protocol version this packet uses. It is 4 bits long, and a value of 4 means the packet is IPv4. That lets the rest of the header be interpreted with IPv4 rules (for example, the next field after Version is IHL, which indicates the header length in 32‑bit words). Other values correspond to different versions: 6 would indicate IPv6, while 5 is an experimental, unused version and 7 is not a standard used today.

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