Which of the following is a hardware requirement that either an IDS/IPS system or a...

Dual-homed or dual-homing can refer to either an Ethernet device that has more than one network interface, for redundancy purposes, or in firewall technology, dual-homed is one of the firewall architectures, such as an IDS/IPS system, for implementing preventive security.

References: https://en.wikipedia.org/wiki/Dual-homed