COGNITIVE ASSESSMENT What Is the Definition of a Fault-Tolerant Computer

COGNITIVE ASSESSMENT What is the definition of a fault-tolerant computer?

A) a computer that runs a spell checker program automatically
B) a computer with a firewall and other antivirus and security systems
C) a computer that backs up its system automatically to ensure if it fails the data and programs are intact
D) a computer that continues to operate when one of its components fails