There are several types of DNS servers, including:

1. Recursive DNS servers: These servers are designed to respond to DNS queries by sending requests to other DNS servers until they get the final answer.

1. Authoritative DNS servers: These servers are responsible for answering queries related to a specific domain name. They contain information about the domain name’s IP address and other DNS records.

1. Caching DNS servers: These servers store DNS information for a short period of time to improve query response times. They can speed up subsequent requests for the same domain name.

1. Forwarding DNS servers: These servers are used to send DNS queries to other DNS servers if they do not have the required information. They act as intermediaries between the client and the authoritative DNS server.

1. Root DNS servers: These servers are responsible for resolving queries that cannot be answered by other DNS servers. They contain information about the DNS hierarchy and top-level domains.

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