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22. From the following DNS resolution process, please tell which server is an authoritative DNS server. host.my.com. 1716 > dns.my.com. 53: 1+ (35) dns.my.com.53 >

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22. From the following DNS resolution process, please tell which server is an authoritative DNS server. host.my.com. 1716 > dns.my.com. 53: 1+ (35) dns.my.com.53 > h.root-servers.net.53: 12420 (30) (DF) h.root-servers.net.53 > dns.my.com. 53: 12420- 0/3/3 (153) (DE) dns.my.com.'53 > serveri.sans.org.53: 12421+ (30) (DF) server1.sans.org.53 > dns.my.com. 53: 12421* 1/3/3 (172) dns.my.com.53 > host.my.com. 1716: 1* 1/3/3 (197) (DE)

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