A Security Manager is part of a team selecting web conferencing systems for internal use. The system will only be used for internal employee collaboration. Which of the following are the MAIN…

Security of data storage addresses how recorded sessions, shared files, and chat logs are protected at rest from unauthorized access or disclosure.

Cost is a procurement and financial concern, not a security concern, and falls outside the security manager's primary evaluation criteria.

System availability is a core security concern because downtime of an internal collaboration tool disrupts business operations and represents a denial-of-service risk vector.

User authentication strategy is critical to ensure only authorized employees can join internal sessions, preventing unauthorized information disclosure.

PBX integration is a telephony feature requirement, not a security concern for an internal-only web conferencing deployment.

Operating system compatibility is an IT operations and deployment concern, not a primary security requirement.