Server A makes a DNS request to Server B to Suppose A, B, and C are DNS servers. determine the mapping of a domain name, say “hostname.someschool.edu", to an IP address. Server B does not have the mapping, but Server C does and Server B also has the IP address of Server C. What is the sequence of DNS requests and responses required for Server A to obtain the mapping assuming: (i) All DNS queries are recursive. (ii) All DNS queries are iterated.

Server A makes a DNS request to Server B to Suppose A, B, and C are DNS servers. determine the mapping of a domain name, say “hostname.someschool.edu", to an IP address. Server B does not have the mapping, but Server C does and Server B also has the IP address of Server C. What is the sequence of DNS requests and responses required for Server A to obtain the mapping assuming: (i) All DNS queries are recursive. (ii) All DNS queries are iterated.

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Question

Suppose A, B, and C are DNS servers.
determine the mapping of a domain name, say “hostname.someschool.edu", to an IP address.
Server B does not have the mapping, but Server C does and Server B also has the IP address
of Server C. What is the sequence of DNS requests and responses required for Server A to
obtain the mapping assuming:
Server A makes a DNS request to Server B to
(i) All DNS queries are recursive.
(ii) All DNS queries are iterated.

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