default, how long does an Installer role have access to a site tor Initial configuration...

Installer Role in Mist:

The Installer role is designed for initial site setup and configuration.

Access Duration:

By default, the Installer role has temporary access for a specific duration to ensure security and control.

Default Access Duration:

7 days: Installers typically have access to a site for 7 days, enough time to complete initial setup and configuration before access expiration.

Conclusion:

The correct answer is A.

References:

Mist Documentation on Role-Based Access: Mist Documentation