Refer to the exhibits.

The exhibit combines static-route priority changes with interface-specific session-route preservation.

Initially, port2 provides the preferred default route with priority 1, while port1 has priority 10. Increasing port2 ' s route priority to 20 makes port1 the preferred path for new route selections.

Option C is correct because newly created sessions use the current routing table. Since port1 now has the better route priority, traffic matching the default route is forwarded through port1.

Option E is correct because the port2 interface has preserve-session-route enable configured. This setting preserves the original egress routing information associated with existing sessions, allowing them to continue through port2 while the previously selected route remains valid.

The global setting snat-route-change enable enables reevaluation of SNAT session routing when applicable routing changes occur. However, the configured session-route preservation requires special consideration and prevents the simplistic assumption that all established sessions must immediately migrate.

Option A incorrectly assumes that every SNAT session is necessarily moved to port1. Option B introduces an IP-pool dependency that does not determine the stated behavior. Option D incorrectly assumes all sessions are marked dirty and rerouted regardless of session preservation.

The key architectural distinction is between forwarding new sessions according to the revised route priority and preserving eligible established sessions on their original egress path.