Legacy firewalls introduce performance risk because they were designed around centralized perimeter enforcement and hardware capacity limits. Cloud and remote-work traffic creates encrypted, high-volume flows that can overwhelm appliance-based inspection and force inefficient backhauling. Option A (Performance issues) is correct because performance degradation is a real business risk of legacy firewall architecture.
Why the other options are incorrect:
B. Reduced management: Reduced management would be an operational benefit, not a business risk introduced by legacy firewalls.
C. Low costs: Low cost is a benefit claim, while legacy firewall estates usually add hardware, scaling, and maintenance cost.
D. Low licensing support: Licensing support is a commercial concern, not the main architectural risk tested in the legacy-firewall question.
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