Assume DNS entries have 60-minute TTL (time to live) values. 50 minutes after learning the DNS entry for the server, our client has rebooted and cleared everything out of cache, and reopens the same web page as before, requiring the DNS entry again.
After supply, the DNS record, how much time does the DNS entry have to live?

DNS record takes 72 hours to propagate. The client rebooted and cleared ache then reopen the same web page will require 72 hours for a reboot.

Explanation:

DNS (Domain name system) is used to describe the time after making changes in the WHOIS tool, which is used to register the domain of contact information. DNS requires 72 hours to propagate fully.

Information is stored in the cache to improve the performance of DNS, DNS live time (TTL) is the time that store records in cache. If the record is changed, DNS will continue working. Time is required for DNS to update their cache. DNS requires 72 hours to propagate.

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)