a cloud phone system is a Voice over IP (VoIP) based business telephoneplatform that is hosted by a third-party provider such as OnSIP. Cloud phonesystems typically offer advanced security and telephony features such as: extension dialing, auto attendants, and conference bridges
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Answer:
B is the answer.. pls mark me as brainliest
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Explanation:
The correct answer is letter b
Answer:
Knowledge-based intrusion detection system.