Which administrative authentication method supports authorization by an external service?

An administrator deploys PA-500 NGFWs as an active/passive high availability pair . The devices are not participating in dynamic router and preemption is disabled.
What must be verified to upgrade the firewalls to the most recent version of PAN OS software?

Which event will happen administrator uses an Application Override Policy?

If the firewall is configured for credential phishing prevention using the "Domain Credential Filter" method, which login will be detected as credential theft?

An administrator has left a firewall to used default port for all management services.
Which three function performed by the dataplane? (Choose three.)