Do the dual IACs provide backup capability?

• A. Yes
• B. No
• C. Only IAC1
• D. Only IAC2

Answer: (B)

The concept being tested is redundancy versus true backup. Having two IACs can improve availability by providing a path for failover or load sharing, but that does not automatically give you backup capability. A true backup means a completely independent spare that can take over without relying on the failed unit or the same shared infrastructure, so operations can continue even if a fault affects both units or their common resources. With dual IACs, a single fault or shared dependency (power, network, or a common control channel) can still impact both, so there isn’t a guaranteed offline spare ready to operate on its own. That’s why they do not provide backup capability. If you needed true backup, you’d need a separate, independent standby system that can be powered and brought online without relying on the same fault domain.