Which of the following server.conf stanzas indicates the Indexer Discovery feature has not been fully configured (restart pending) on the Master Node?

Which configuration item should be set to false to significantly improve data ingestion performance?

The customer has an indexer cluster supporting a wide variety of search needs, including scheduled search, data model acceleration, and summary indexing. Here is an excerpt from the cluster mater's server.conf:

Which strategy represents the minimum and least disruptive change necessary to protect the searchability of the indexer cluster in case of indexer failure?

A customer has written the following search:

How can the search be rewritten to maximize efficiency?

An index receives approximately 50GB of data per day per indexer at an even and consistent rate. The customer would like to keep this data searchable for a minimum of 30 days. In addition, they have hourly scheduled searches that process a week's worth of data and are quite sensitive to search performance.
Given ideal conditions (no restarts, nor drops/bursts in data volume), and following PS best practices, which of the following sets of indexes.conf settings can be leveraged to meet the requirements?