Which of the following statements is correct?
a. A spam will send a network packet that appears to come from a source other than its actual source.
b. Multi-factor authentication is less secure than requiring a user always entering a password to access a network.
c. Fault tolerance uses redundant units to provide a system with the ability to continue functioning when part of the system fails.
d. SOC 1 reports provide the evaluations on a broader set of controls implemented by the service provider.