Computers And Technology High School

The typical query one DNS server sends to a root name server is called a(n) _______.?
a.recursive query
b.iterative query
c.referral
d.forwarded query

Answers

Answer 1

The typical query that a DNS server sends to a root name server is called a referral. This is because when a DNS server receives a request for a domain name that does not have the IP address in its cache, it will send a referral to the root name server, asking for the IP address of the top-level domain associated with the requested domain name.

The root name server will then respond with a referral to the appropriate top-level domain name server, which will in turn provide the IP address of the domain name requested. This process can involve both recursive and iterative queries, depending on the configuration of the DNS servers involved. In a recursive query, the DNS server that receives the initial request will continue to query other DNS servers on behalf of the requesting client until it obtains a complete answer. In an iterative query, the DNS server will provide the client with a referral to another DNS server and allow the client to continue the query process.
Overall, DNS is an essential protocol for translating human-readable domain names into machine-readable IP addresses, enabling data to be transmitted across the internet. As such, understanding the different types of queries and referrals used in the DNS process is crucial for maintaining efficient and secure data communication.

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