Given several Azure virtual networks including VNet1, which of the other virtual networks can be peered with VNet1?

VNet peering allows you to connect Azure virtual networks seamlessly. The key requirement for peering is that the virtual networks must have non-overlapping IP address spaces. VNet3 and VNet4 are the only options with non-overlapping IP address ranges compared to VNet1. VNet2 cannot be peered with VNet1 because they share overlapping IP address ranges (both use 10.0.0.0/16), which would lead to routing conflicts. Peering creates a direct, low-latency connection between VNets, making them appear as a single, larger network for connectivity purposes.