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What SOA Record Has Parameters?

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    Generally, the take a look start of Authority (SOA) record that used to fix the time to live. It controls the overall working of the network. The SOA record is contained by the following parameters:

    • Serial — the zone step by step number, increased when the zone file is updated, so the slave and after first the name servers know when the region has been updated and should be again called from the memory.
    • Refresh — the amount of seconds between new demands from secondary and junior name main units.
    • Retry — the amount of seconds the secondary or junior will wait prior to retrying when the last step has disapprove or return.
    • Expire — the number of seconds a master or slave will wait before considering the data stale if it cannot reach the primary name main unit.
    • Minimum —prior to it used to control a fix amount of minimum TTL, this represents negative caching.

    Day by day the newer copies of BIND (named) will get the suffixes 'M','H','D' or 'W', which showing a time-limit of minutes, hours, days and weeks respectively.
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    Tulip_rose 

    answered 3 years ago

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