The dual IACs form the core of the integrated avionics system, and they do not provide backup capability.

• A. True
• B. False
• C. It depends on configuration
• D. Not specified

Answer: (B)

Redundancy and fault tolerance are central to integrated avionics. Having two IACs allows the system to keep operating if one unit fails, because the second can take over or cross-check outputs to ensure continuity. This backup capability is a fundamental reason for having a dual arrangement in safety-critical systems. Therefore, saying they form the core but do not provide backup misses that essential function, so the statement is false. In typical configurations, backup capability is expected; it isn’t something that’s optional or unspecified.