During search time, which directory of configuration files has the highest precedence?

Which layers are involved in Splunk configuration file layering? (Choose all that apply.)

User role inheritance allows what to be inherited from the parent role? (Select all that apply.)

Social Security Numbers (PII) data is found in log events, which is against company policy. SSN format is as follows: 123-44-5678.
Which configuration file and stanza pair will mask possible SSNs in the log events?

An index stores its data in buckets. Which default directories does Splunk use to store buckets? (Choose all that apply.)