In Juniper Mist Wired Assurance, assigning roles to switches is a key configuration mechanism for deploying consistent network policies across multiple devices. Switch roles act as logical identifiers that bind devices to specific configuration templates or policy profiles, ensuring standardized setup and reducing manual configuration overhead.

According to the Juniper Mist Wired Assurance Configuration and Template Management Guide:

''Switch roles are used to group devices based on function or location and automatically apply predefined configuration templates and policies at scale.''

This enables administrators to:

Automatically assign VLANs, port profiles, and policies to multiple switches simultaneously.

Simplify deployment for large organizations with multiple sites.

Ensure uniform compliance with enterprise configuration standards.

Roles are not used to configure WLANs (wireless function), manage users, or directly monitor traffic --- those tasks are handled through other Mist AI services.

Therefore, the correct answer is C. To assign configurations at scale.

-- Juniper Mist Wired Assurance Configuration and Template Management Guide

-- Juniper Mist Cloud Administration Guide

-- Juniper Mist Wired Assurance Operations Documentation