What is the valid most compressed format possible of the IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234?

Question:
What is the valid most compressed format possible of the IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234?

• 2001:DB8:0:AB00::1234
• 2001:DB8:0:AB::1234
• 2001:DB8::AB00::1234
• 2001:DB8:0:AB:0:1234

Explanation: There are two rules defining how an IPv6 address can be compressed. The first rule states that leading zeros in a hextet can be eliminated. The second rule states that a single :: can be used to represent one or more contiguous all zero hextets. There can be one and only one :: in an IPv6 address.

Exam with this question: 12.9.4 Module Quiz – IPv6 Addressing Answers
Exam with this question: CCNA 1 (v5.1 + v6.0) Practice Final Exam Answers
Exam with this question: Networking Essentials (Version 2) - Modules 9 - 12: Data Communications and Network Services Group Exam
Exam with this question: Checkpoint Exam: The Internet Protocol