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? Jawaban : Maka aka nada 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? Jawaban : Tidak akan terjadi apa-apa record-nya tidak akan bertambah
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