VNet1 currently has no connected resources. You plan to peer VNet1 with VNet2, and VNet2 uses the 10.2.0.0/16 address space. What should you do first to create the peering?
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Correct answer: Modify the address space of VNet1..
Why this is the answer
To successfully peer two VNets, their address spaces must not overlap. VNet2 uses the 10.2.0.0/16 address space. If VNet1 currently has an overlapping address space (e.g., also 10.2.0.0/16 or a subnet within it), you must modify VNet1's address space to a non-overlapping range before peering. Adding a gateway subnet is for VPN gateways, not a prerequisite for peering. Creating subnets on VNet1 and VNet2 is not required for the peering itself, though subnets are needed for resources within the VNets. Configuring a service endpoint on VNet2 is for securing Azure service access, unrelated to VNet peering prerequisites.
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