Help needed to figure out some of the complication on Networking

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Job Description

While pinging some IP i get some information, now i am inneed of following description and how it happens.

Identify the maximum round trip time
Why has the round trip time changed from one ping attempt to another?
If the destination is 7 hops away, what is the value of the TTL field in the datagram carrying the reply ping messageat the destination?

And some other questions related to networking, DNS, IPV6 and IPV4 etc and help me to learn and understand more about the networking.

I need to understand these by friday so needed tutor urgent

Thanks and Happy bidding