Question: C. What following command do? for i in $(seq 50 70);do echo jb356-$i IN A 139.182.148.$i >> named.jb356 ; done D. What are the differences

C. What following command do?

  • for i in $(seq 50 70);do echo jb356-$i IN A 139.182.148.$i >> named.jb356 ; done

D. What are the differences between authoritative and caching-only DNS servers?

E. What are the differences between recursive and non-recursive DNS servers?

F. What ports DNS uses?

G. What port numbers following protocol uses?

  • http:
  • https:

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