# Question 521 of 952 from exam 200-125: Cisco Certified Network Associate Exam

### Question

What is the alternative notation for the IPv6 address B514:82C3:0000:0000:0029:EC7A:0000:EC72?

### Answers

### Explanations

Explanation

There are two ways that an IPv6 address can be additionally compressed: compressing leading zeros and substituting a group of consecutive zeros with a single double colon (::). Both of these can be used in any number of combinations to notate the same address. It is important to note that the double colon (::) can only be used once within a single IPv6 address notation. So, the extra 0's can only be compressed once.

The alternative notation for the IPv6 address B514:82C3:0000:0000:0029:EC7A:0000:EC72 is represented by reducing consecutive blocks of 0000s to double colons "::". This shorthand notation can be used to simplify and compress the address without losing any information.

So, we can rewrite the given IPv6 address as:

B514:82C3:0000:0000:0029:EC7A:0000:EC72

As there are two consecutive blocks of 0000s, we can use "::" to represent them, but we can only use it once in an IPv6 address. Therefore, we can compress the above IPv6 address as:

B514:82C3::0029:EC7A:0:EC72

So, the answer is (D) B514:82C3::0029:EC7A:0:EC72.