IPv6 Address Field Size | Cisco Certified Network Associate Exam

How Many Bits are in Each Field of an IPv6 Address?

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How many bits are contained in each field of an IPv6 address?



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A. B. C. D.


An IPv6 address is represented as eight groups of four hexadecimal digits, each group representing 16 bits (two octets). The groups are separated by colons (:).

An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334.

The correct answer is none of the above. Each field of an IPv6 address contains 16 bits.

IPv6 (Internet Protocol version 6) is the successor to IPv4 and is designed to address the exhaustion of IPv4 addresses. IPv6 addresses are 128-bit addresses and are represented in hexadecimal notation.

IPv6 addresses are divided into eight 16-bit fields, separated by colons. For example, an IPv6 address might look like this: 2001:0db8:85a3:0000:0000:8a2e:0370:7334

In this example, each field contains 16 bits. Therefore, the correct answer is D. 16.