Val would like to isolate several systems belonging to the product development group from other systems on the network, without adding new hardware. What technology can she use?

Answer. Virtual Segmentation

Explanation:

Virtual segmentation is a logical isolation of network on the same physical network but requires no additional new hardware. It involves virtual process of splitting a computer network into subnetworks, creating address spaces of various size called segments. Virtual segmentation boosts network performance and improves network security controls. Each segments corresponds to process objects and is a different virtual address space.