Refer to the exhibit. Host A is trying to resolve the name www.internal.cisco.com to an IP address. When the name resolution request is received by a root DNS server, which server will be included in the response for further resolution?
- DNS server A
- DNS server B
- DNS server C
- web server D
Explanation: Root DNS servers only carry records for top-level domains (like .com or .org). If a host requests resolution from a root DNS server for the domain www.cisco.com, for example, the root DNS server would refer the client to the DNS server responsible for the .com domain. This DNS server would then refer the client to the DNS server for cisco.com. Finally, the DNS server for cisco.com is authoritative for that domain and would return the IP address of the host record "www", completing the resolution of www.cisco.com.
Exam with this question: Networking Devices and Initial Configuration Module 8.3.3 IP Addressing Services Quiz
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