Refer to the exhibit. Which description of the transformation is true?

Question

Exhibit

Options

• AIt converts [email protected]:<port> to [email protected]
• BIt changes all patterns that begin with [email protected]:<port> to [email protected]
• CIt changes [email protected]:<port> to [email protected]
• DIt converts [email protected]:<port> to [email protected]

• A
  84% (58)
• B
  9% (6)
• C
  4% (3)
• D
  3% (2)

Explanation

This transformation rule on Cisco Expressway uses a regex-based pattern match and substitution. The pattern matches the full URI [email protected]:<port> - including the specific alias '4123', the full internal hostname 'exp-name.exp.domain', and the port number. The replacement strips the internal hostname and port, outputting [email protected] - preserving the numeric alias but simplifying the domain to just the base domain. This is a common transformation used to normalize internal FQDNs and port numbers into clean, routable external SIP URIs. Choice B is incorrect because the alias portion (4123) is preserved, not replaced with '1'. Choice C references '413' which does not match the pattern. Choice D references '4.3' (dot-wildcard notation) which would match differently and also incorrectly states the output alias as '1'.

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