I’m working on a programming question and need guidance to help me learn.

Consider the subject of DNS servers.

  • Why would a host contact a DNS server?
  • If a local DNS server does not know the IP address for a host name, what will it do?
  • What kind of organization must maintain one or more DNS servers? Why?
  • How does your organization protect itself from DNS cache poisoning? Do you think this is sufficient? Why or why not?

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