Comprehensive and Detailed In-Depth Explanation:

In the iMaster NCE-Campus virtualized network management platform, devices can be added using various methods:

A. In Batches: Correct. Devices can be added in bulk for efficient management.

B. By Device Role: Correct. Devices can be grouped and managed based on their role (e.g., access, aggregation, core).

C. By Device ESN (Electronic Serial Number): Correct. The ESN uniquely identifies the device within the system.

D. By Device Model: Incorrect. The platform does not use the device model as a primary criterion for adding devices. Instead, devices are typically added by role, ESN, or batch operations.