Explain the difference between 'primary path' and 'backup path' in alarm communications, and what redundancy expectations should be met onsite?

Explain the difference between 'primary path' and 'backup path' in alarm communications, and what redundancy expectations should be met onsite?

• A. Primary path is the main communication channel; backup path is an alternate channel used if the primary fails; redundancy should include automatic failover and regular test of both paths
• B. Primary path is for radio; backup is for cellular
• C. Primary and backup refer to call routing to operators
• D. Primary path is for security alarms only

Answer: (C)