Scenario guide
How to approach nat and pat configuration scenarios
NAT and PAT questions cover static NAT (one-to-one), dynamic NAT (pool-based), and PAT/overload (many-to-one using port numbers). The CCNA asks you to read NAT table output, fix misconfigured NAT, and match the right NAT type to a scenario.
Quick answer
NAT questions usually test how private addresses are translated, when to use static NAT, dynamic NAT or PAT, and how inside/outside interfaces affect traffic flow.
Static NAT, dynamic NAT and PAT behaviour.
Inside local, inside global, outside local and outside global address meanings.
How NAT affects connectivity between private networks and public destinations.
How to troubleshoot NAT rules, ACL matches and interface direction.