Which file contains the [cc-num-anon] segment in the transforms configuration?

The correct choice, transforms.conf, is where the [cc-num-anon] segment is defined within the context of configuring data masking or anonymization in Splunk. This file is specifically designed for defining field transformations, such as anonymizing sensitive data like credit card numbers.

The transforms.conf file allows administrators to specify rules that apply to data as it enters Splunk, particularly for tasks like obfuscating personally identifiable information (PII). The segment [cc-num-anon] would typically be defined here to instruct Splunk how to handle credit card number data, ensuring that it is not stored in its original form, which helps maintain compliance and security standards.

In contrast, props.conf primarily handles data parsing and indexing configurations, such as source type settings and timestamp extraction but does not deal with specific transformation details like anonymization. Inputs.conf is used for defining data input sources, while outputs.conf governs the destination of indexed data. Thus, these files serve different purposes and do not contain transformation rules such as [cc-num-anon].