Question

A DNS resolver receives an iterative query for www.example.com. It first contacts a root server, then a .com server, then an authoritative server. Which statement best describes the resolver's role?

A The client directly contacts every DNS hierarchy level
B The authoritative server performs all recursion for the resolver
C The resolver follows referrals and assembles the final answer
D The resolver returns the root server's final address
E The resolver recursively asks each server for the full answer
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