An admin must change a running production VM to a larger size. What's true about resizing?
A.Resizing is always instant with no downtime
There's a restart — not instant.
B.The VM is deallocated during resize — expect a brief downtime and note that public IPs may change if not static
Deallocation + possible dynamic-IP loss. Correct.
C.VMs cannot be resized after deployment
Resize is fully supported — it's a standard operation.
D.Resizing requires rebuilding from the OS disk
The OS disk persists through resize — no rebuild needed.
Why this answer
Resizing deallocates the VM briefly (downtime), and any DYNAMIC public IP is released — a classic operational gotcha. Data on the temporary disk is also lost during certain resize paths.
Correct answer: B · Last reviewed 2026-02-14
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