ping 198.168.57.98 && echo Success || echo failed

Very neat method, I've seen a lot of batch but have never seen that. However, I'd modify it to be more like

ping 198.168.57.98 -n 1 > nul 2>&1 && echo Success || echo failed

@echo off
:start
ping %1 -n 1 > nul 2>&1 && echo ok || beep
goto start

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jacktrader