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Morris worm exploited a buffer overflow vulnerability in the UNIX ___ utility.
whois
tracert
ping
finger
The correct answer is "finger". Tracert - is not even a UNIX tool, it's Windows only (https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-xp/bb491018(v=technet.10)). UNIX equivalent is traceroute
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