Bad Qubits — Learn Quantum by Doing

Multiple choice

In the quantum software stack, where does a state-vector simulator like this platform's fit, and what is it good (and not good) for?

It is the algorithm layer, where you reason only in terms of oracles and asymptotic complexity
It replaces the transpiler by routing two-qubit gates onto the chip's connectivity graph
It sits at the lowest layer, emitting calibrated microwave pulses, so it is the right tool for predicting a device's gate count and error
It sits beside the stack: it consumes a hardware-agnostic circuit and computes the exact outcome with no native gate set or connectivity constraints, making it ideal for verifying correctness but useless for predicting hardware cost