What Is the Use of Name Server in DNS?


Angela Bailey

When it comes to understanding how the Domain Name System (DNS) works, one important component to consider is the Name Server. The Name Server plays a crucial role in translating human-readable domain names into machine-readable IP addresses. In this article, we will explore the purpose and use of a Name Server in DNS.

What is a Name Server?

A Name Server, also known as a DNS server or DNS resolver, is responsible for resolving domain names to their corresponding IP addresses. When you type a domain name into your web browser, the Name Server is responsible for finding the IP address associated with that domain name so that your computer can establish a connection with the correct server.

How Does a Name Server Work?

When you enter a domain name in your web browser, your computer first checks its local cache for the corresponding IP address. If it doesn’t find it there, it sends a query to the configured Name Server.

The query is sent recursively or iteratively depending on how the DNS resolution process is set up. In recursive resolution, the local computer asks the configured Name Server to resolve the domain name on its behalf. The Name Server then queries other authoritative DNS servers until it finds an answer and returns it to the requesting computer.

In iterative resolution, instead of asking for the answer directly, the local computer asks for referral information from each subsequent server until it eventually receives an authoritative answer.

The Importance of Name Servers

Name Servers are crucial for several reasons:

  • DNS Resolution: As mentioned earlier, Name Servers are responsible for translating domain names into IP addresses. Without them, accessing websites by their domain names would not be possible.
  • DNS Redundancy: Name Servers are often set up in a redundant manner, meaning multiple Name Servers are configured for a domain. This redundancy ensures that if one Name Server fails or becomes overloaded, there are others available to handle DNS queries, improving the overall reliability of the DNS system.

Types of Name Servers

There are several types of Name Servers:

  • Authoritative Name Servers: These servers store the actual DNS records for a domain. They provide authoritative answers to DNS queries and are responsible for providing the IP addresses associated with specific domain names.
  • Recursive Resolvers: These servers perform recursive resolution on behalf of requesting computers.

    They query authoritative Name Servers to find the IP address associated with a given domain name and return the answer to the requesting computer.

  • Caching Resolvers: Caching resolvers temporarily store DNS information they receive from authoritative servers. This caching helps improve DNS resolution speed by reducing the need to query authoritative servers repeatedly for popular domain names.

In Conclusion

The Name Server is a fundamental component of the Domain Name System. It plays a vital role in translating human-readable domain names into machine-readable IP addresses, allowing us to access websites using easy-to-remember domain names. Understanding how Name Servers work and their importance in the DNS infrastructure is crucial for anyone working with web technologies.

By effectively utilizing and configuring Name Servers, you can ensure reliable and efficient DNS resolution for your websites and applications.

Discord Server - Web Server - Private Server - DNS Server - Object-Oriented Programming - Scripting - Data Types - Data Structures

Privacy Policy