The key benefit of Palo Alto Networks single-pass architecture (SPA) design is that it allows the addition of new functions to existing hardware without affecting performance.
The single-pass architecture processes all traffic in a single pass, eliminating redundant functions and reducing processing overhead. This allows new security functions to be added without impacting the firewall's performance.
Should be B, since PA HW has multiple processors. single-pass just mean that multiple processors are evaluating the packet at the same time. parallel processing enables them to add new functionalities without affecting the traffic execution flow.
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