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. SOC 1 reports provide the evaluations on a broader set of controls implemented by the service provider.
C. Fault tolerance uses redundant units to provide a system with the ability to continue functioning when part of the system fails.
D. Multi-factor authentication is less secure than requiring a user always entering a password to access a network.

Fault tolerance on a system is simply defined as a key feature that makes a computer system to continue with its operations even though there is a system failure on one part or a specific part of the system. A computer that is said to be fault tolerant system will operate well/ fine, after one of the power supplies fails,

A fault tolerant system is known to have no occurrence of Single point of failure, No single point repair takes the system down, fault isolation or identification and Fault containment, robustness or variability control