Q: During the name resolution process, which server does a local recursive server contact first?
or
Q: Which server does a local recursive server contact first during the name-resolving process?
- Root name server
- Top level domain (TLD) server
- Caching name server
- Authoritative name server
Explanation: A local recursive server will first make contact with a caching name server to begin the process of name resolution. Name servers that cache information on previously resolved domain names do so for a predetermined amount of time. Recursive servers scan their cache to determine whether or not they already possess the IP address that corresponds to a domain name when they get a query for a domain name. The recursive server will then recursively ask additional DNS servers, first with the root name servers, then moving on to the top-level domain (TLD) servers, and eventually arriving at the authoritative name servers for the particular domain. This will occur if the information is either not stored in the cache or has expired.
