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An organization’s firewall has recently been bombarded with an excessive amount of failed requests.

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An organization’s firewall has recently been bombarded with an excessive amount of failed requests. A security analyst has been tasked with providing metrics on any failed attempts to ports above 1000. Which of the following regular expressions will work BEST to identify an IP address with the desired port range?

A.

/\b^(?\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}):({4,5}\d+)\b/

B.

/\b^(?\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}):([4]\D+)\b/

C.

/\b^(?\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}):([4]\d+)\b/

D.

/\b^(?\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}):(\d{1,5})\b/

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