The Post-Install role, also known as the Installer role within the Juniper Mist platform, is a limited-privilege account designed specifically for personnel responsible for the physical deployment of hardware. Users with this role can perform tasks essential for bringing new devices online, such as claiming Access Points (APs) and switches into an organization's inventory, assigning those devices to a specific site, and placing them on a floorplan map. This role is intentionally restricted and does not have access to broader network configuration, monitoring dashboards, or troubleshooting workflows, ensuring a secure separation of duties.

A. It is used for help-desk monitoring and workflow for all sites.

This describes the Helpdesk role, which is focused on monitoring client status and performing basic troubleshooting, not device installation.

C. It has read-only access to all sites.

This describes the Observer role, which can view configurations and analytics but cannot make any changes, including installing new devices.

D. It has full access to all sites.

This describes the Administrator or Super User role, which has comprehensive privileges to configure, manage, and monitor the entire site or organization.

1. Juniper Mist Documentation, "Administrator Roles": The documentation explicitly defines the "Installer" role (functionally equivalent to "Post-Install"). It states, "The Installer role has privileges to install and provision new devices. For example, an Installer can claim APs and Switches, assign devices to a site, and place APs on a floorplan." This directly supports the function described in the correct answer. (Found in the Juniper Mist Cloud UI documentation under Organization > Administrators).

2. Juniper Networks, "Mist Cloud Administration Guide": In the section on Role-Based Access Control (RBAC), the guide details the different predefined roles. The Installer role is characterized by its limited scope, focusing solely on the actions required to add and place new hardware, which aligns with option B.