Briefing Blue Coat Knowledge

What happens to the content filtering policy evaluation in this case?

ProxySG uses a licensed Blue Coat Web Filter (BCWF), and has configured policies for URL
categories. ProxySG uses a DNS server, which for some reason cannot resolve the domain name
sp.cwfservice.net anymore. What happens to the content filtering policy evaluation in this case?

A.
Any time when policy evaluation needs to categorize an URL, access to that page is denied.

B.
ProxySG always uses whatever action is configured for the System/unavailable category

C.
Policy evaluation is not affected, because ProxySG uses the default IP address of a WebPulse
Service Point

D.
Policy evaluation is not affected for URLs categorized in the BCWF database, and is evaluated
as System/unavailable for any other URLS.

Explanation: