Question

Which option is a valid IPv6 address?
Group of answer choices

FEC0:ABCD:WXYZ:0067::2A4

2001:0000:130F::099a::12a

2004:1:25A4:886F::1

2002:7654:A1AD:61:81AF:CCC1

Answer 1

To determine which option is a valid IPv6 address, we need to check each option for compliance with IPv6 address formatting rules, including the use of valid hexadecimal digits (0-9, A-F), correct use of colons, and the correct number of segments.

1. **FEC0:ABCD:WXYZ:0067::2A4**
- Contains "WXYZ," which is not a valid hexadecimal value. Invalid.

2. **2001:0000:130F::099a::12a**
- Contains two "::" which is not allowed in a valid IPv6 address. Invalid.

3. **2004:1:25A4:886F::1**
- This is a valid IPv6 address. It contains valid hexadecimal characters, uses "::" correctly (once), and has the appropriate structure.

4. **2002:7654:A1AD:61:81AF:CCC1**
- This is also a valid IPv6 address. It has valid hexadecimal characters and follows the correct format.

From the options provided, **2004:1:25A4:886F::1** is the most straightforwardly identifiable as a valid IPv6 address. Both **2004:1:25A4:886F::1** and **2002:7654:A1AD:61:81AF:CCC1** are valid, but since the question asks for which option among them is a valid IPv6 address, we can conclude:

**Correct answer: 2004:1:25A4:886F::1**