ISP : Lab 7.3.3 a Examining Cached DNS information on a windows DNS server

Step 1: use the windows server administrative tool

Step 2: perform a DNS lookup

Step 3: Examine the chaced DNS entries

Step 4: reflection

a.       The DNS server had to do a query to the cisco.com domain name servers to resolve name (www.cisco.com) to an IP address what do you think would happen the next time this website is visited again a few minutes? Maka akan ada ns3 karena alamat www.cisco.com diakses untuk yang ketiga kalinya

b.      What would happen if there are no requests for this website for a longer period of time? Tidak akan terjadi apa-apa record-nya tidak akan bertambah

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