A user needs to resolve the domain training.citrix.com, and the information is NOT available in resolver cache and Local Domain Name Server (DNS).
Where will the request be forwarded next?
A user needs to resolve the domain training.citrix.com, and the information is NOT available in resolver cache and Local Domain Name Server (DNS).
Where will the request be forwarded next?
When a user attempts to resolve a domain and the information is not available in the resolver cache or Local Domain Name Server (DNS), the next step is to query the Root server. The Root server is the entry point for the DNS resolution process, which will then direct the query to the appropriate Top-level Domain server and further down the hierarchy until the authoritative server is reached.
A is correct. "hen the Citrix ADC receives a DNS request, it checks its cache for the DNS record. If the record is not present in the cache, it queries the root servers configured in the ns.conf file." Reference: https://docs.citrix.com/en-us/citrix-adc/current-release/dns/configure-citrix-adc-end-resolver.html