Huawei Certified Network Associate – Routing and Switching (HCNA-RS, legacy) — Question 9

Which of the following formats represent an accurate condensing of the IPv6 address 2031:0000:720C:0000:0000:09E0:839A:130B? (Choose two).

Answer options

• A. 2031:0:720C:0:0:9E0:839A:130B
• B. 2031:0:720C:0:0:9E:839A:130B
• C. 2031::720C::9E0:839A:130B
• D. 2031:0:720C::9E0:839A:130B

Correct answer: A, D

Explanation

Option A is correct because it accurately reduces leading zeros in each segment of the IPv6 address. Option D is also correct as it uses the double colon to represent consecutive groups of zeros while maintaining valid notation. Options B and C are incorrect because B introduces an invalid segment format and C incorrectly uses two double colons, which is not permissible in IPv6 addressing.