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Explain “ttl”? |
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Answer» Time to live. A 32-bit number indicating the time the particular RR can be KEPT valid in a SERVER CACHE. When this time expires, the RECORD has to be considered invalid. The value 0 keeps nonauthoritative servers from saving the RR to their cache MEMORY. Time to live. A 32-bit number indicating the time the particular RR can be kept valid in a server cache. When this time expires, the record has to be considered invalid. The value 0 keeps nonauthoritative servers from saving the RR to their cache memory. |
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