https://docs.splunk.com/Documentation/Splunk/8.0.5/Admin/Aboutlicenseviolations

'Enterprise Trial license. If you get five or more warnings in a rolling 30 days period, you are in violation of your license. Dev/Test license. If you generate five or more warnings in a rolling 30-day period, you are in violation of your license. Developer license. If you generate five or more warnings in a rolling 30-day period, you are in violation of your license. BUT for Free license. If you get three or more warnings in a rolling 30 days period, you are in violation of your license.'

https://docs.splunk.com/Documentation/Splunk/6.2.0/Data/Configuretimestamprecognition

'Specify how far (how many characters) into an event Splunk software should look for a timestamp.' since TIME_PREFIX = ^ and timestamp is from 0-29 position, so D=30 will pick up the WHOLE timestamp correctly.

The outputs.conf file defines how forwarders send data to receivers1.You can specify some output configurations at installation time (Windows universal forwarders only) or the CLI, but most advanced configuration settings require that you edit outputs.conf1.

The [tcpout:...] stanza specifies a group of forwarding targets that receive data over TCP2.You can define multiple groups with different names and settings2.

The server setting lists one or more receiving hosts for the group, separated by commas2.If you specify multiple hosts, the forwarder load balances the data across them2.

Therefore, option A is correct, because the forwarder will send data to both inputsl.mysplunkhfs.corp:9997 and inputs2.mysplunkhfs.corp:9997, even if 145.188.183.184:9097 is unreachable.

https://docs.splunk.com/Documentation/Forwarder/8.0.5/Forwarder/Configuretheuniversalforwarder

--Key configuration files are: inputs.conf controls how the forwarder collects data. outputs.conf controls how the forwarder sends data to an indexer or other forwarder server.conf for connection and performance tuning deploymentclient.conf for connecting to a deployment server

Configuretheuniversalforwarder