TTL stands for “time to live.” It is an internet slang term/abbreviation used to indicate the remaining lifespan or duration of something. In computer networking, TTL refers to the maximum amount of time or the number of hops a packet can exist or travel before it expires or is discarded.
Examples:
1. When setting up a home network, you can adjust the TTL value to determine how long a request can travel before it times out and is considered unsuccessful.
2. In the context of Domain Name System (DNS), the TTL value assigned to a domain name specifies how long the information about that domain should be cached by other DNS servers before checking for updates again. It helps in controlling the frequency of DNS queries and reducing overall network traffic.
In summary, TTL is a shorthand used to represent the time or number of hops remaining before a packet or information expires or is discarded in computer networking.
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