In preparation for the deployment of a new environment for a customer, which of the following mappings are correct per PS best practices?

A new single-site three indexer cluster is being stood up with replication_factor:2, search_factor:2.
At which step would the Indexer Cluster be classed as 'Indexing Ready' and be able to ingest new data?
Step 1: Install and configure Cluster Master (CM)/Master Node with base clustering stanza settings, restarting CM.
Step 2: Configure a base app in etc/master-appson the CM to enable a splunktcp input on port 9997 and deploy index creation configurations.
Step 3: Install and configure Indexer 1 so that once restarted, it contacts the CM, download the latest config bundle.
Step 4: Indexer 1 restarts and has successfully joined the cluster.
Step 5: Install and configure Indexer 2 so that once restarted, it contacts the CM, downloads the latest config bundle Step 6: Indexer 2 restarts and has successfully joined the cluster.
Step 7: Install and configure Indexer 3 so that once restarted, it contacts the CM, downloads the latest config bundle.
Step 8: Indexer 3 restarts and has successfully joined the cluster.
A customer has a network device that transmits logs directly with UDP or TCP over SSL. Using PS best practices, which ingestion method should be used?
A customer is migrating their existing Splunk Indexer from an old set of hardware to a new set of indexers. What is the earliest method to migrate the system?
Which of the following server.conf stanzas indicates the Indexer Discovery feature has not been fully configured (restart pending) on the Master Node?