Keep-Alive showing as not enabled but as far as i know it is

[gfm]

For my own sanity, as I am really a server amateur (even though I've been managing this on my own for about 7 years), can I assume a restart of apache is all that is needed to make these config changes go live?

I don't know the exact grep commands for force-response and downgrade...would you be able to post them here for me (sorry!)?

Load balancer or reverse proxy...I am not sure about this. What would be the best way to determine this?

As for the config setting they are:
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15