protocol level security vulnerabilities

Question 1

Provide a summary for the network, server, appliance, and protocol level security vulnerabilities of and remediation actions for VoIP networks in the following format. Provide as many as you can by reviewing your textbook and the Internet resources for the latest attack types.

Vulnerabilities	Countermeasures/Remediations/Recommendations

Question 2

Provide a summary for the commons risks and security features for mobile devices. Summarize common inherent security problems of IoT devices.