Dns NS查询应在何时终止？
命令：Dns NS查询应在何时终止？,dns,Dns,命令： dig NS+noadditional+noquestion+nocomments+nocmd+nostats+trace google.com@8.8.4.4 输出： . 1664 IN NS a.root-servers.net. . 1664 IN NS b.root-servers.net. . 1664 IN NS c.root-servers.net. . 1664
dig NS+noadditional+noquestion+nocomments+nocmd+nostats+trace google.com@8.8.4.4. 1664 IN NS a.root-servers.net.
. 1664 IN NS b.root-servers.net.
. 1664 IN NS c.root-servers.net.
. 1664 IN NS d.root-servers.net.
. 1664 IN NS e.root-servers.net.
. 1664 IN NS f.root-servers.net.
. 1664 IN NS g.root-servers.net.
. 1664 IN NS h.root-servers.net.
. 1664 IN NS i.root-servers.net.
. 1664 IN NS j.root-servers.net.
. 1664 IN NS k.root-servers.net.
. 1664 IN NS l.root-servers.net.
. 1664 IN NS m.root-servers.net.
;; Received 228 bytes from 8.8.4.4#53(8.8.4.4) in 200 ms
com. 172800 IN NS j.gtld-servers.net.
com. 172800 IN NS f.gtld-servers.net.
com. 172800 IN NS h.gtld-servers.net.
com. 172800 IN NS l.gtld-servers.net.
com. 172800 IN NS g.gtld-servers.net.
com. 172800 IN NS i.gtld-servers.net.
com. 172800 IN NS b.gtld-servers.net.
com. 172800 IN NS a.gtld-servers.net.
com. 172800 IN NS k.gtld-servers.net.
com. 172800 IN NS c.gtld-servers.net.
com. 172800 IN NS e.gtld-servers.net.
com. 172800 IN NS m.gtld-servers.net.
com. 172800 IN NS d.gtld-servers.net.
;; Received 500 bytes from 192.33.4.12#53(192.33.4.12) in 27 ms
google.com. 172800 IN NS ns2.google.com.
google.com. 172800 IN NS ns1.google.com.
google.com. 172800 IN NS ns3.google.com.
google.com. 172800 IN NS ns4.google.com.
;; Received 164 bytes from 192.52.178.30#53(192.52.178.30) in 119 ms
google.com. 345600 IN NS ns4.google.com.
google.com. 345600 IN NS ns2.google.com.
google.com. 345600 IN NS ns1.google.com.
google.com. 345600 IN NS ns3.google.com.
;; Received 164 bytes from 216.239.38.10#53(216.239.38.10) in 25 ms
解析程序在收到192.52.178.30（com的名称服务器之一）的答复后没有终止查询。这是标准行为吗？它适用于所有类型的记录吗 您要求
digdig+trace