What are three reasons why a virtual machine might fail to power on? (Choose three.)

An expired ESXi license restricts host operations, and powering on VMs is among the features blocked until a valid license is applied to the host.

At power-on, ESXi must create a .vswp swap file on the datastore sized to the VM's configured memory minus any reservation; if the datastore lacks sufficient free space, the power-on operation fails.

vSphere HA Admission Control enforces resource reservation policies to guarantee failover capacity; if powering on the VM would violate those thresholds, ESXi denies the power-on request.

A disconnected network adapter does not prevent a VM from powering on; the VM starts normally and the adapter simply remains disconnected without blocking the boot process.

A VM without a virtual hard disk can still power on in vSphere - the VM process initializes and will attempt PXE or other boot methods, so the absence of a VHD alone does not block power-on.