Quick Answer: What Is DNS In Networking?

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Domain Name Servers (DNS) are the Internet’s equivalent of a phone book.

They maintain a directory of domain names and translate them to Internet Protocol (IP) addresses.

This is necessary because, although domain names are easy for people to remember, computers or machines, access websites based on IP addresses

What is DNS and example?

DNS – Domain Name System

(1) Short for Domain Name System (or Service or Server), an Internet service that translates domain names into IP addresses. For example, the domain name www.example.com might translate to 198.105. 232.4.

How DNS works step by step?

How does DNS work?

  • Step 1: Request information.
  • Step 2: Ask the recursive DNS servers.
  • Step 3: Ask the root name servers.
  • Step 4: Ask the TLD name servers.
  • Step 5: Ask the authoritative DNS servers.
  • Step 6: Retrieve the record.
  • Step 7: Receive the answer.

What is DNS explain in detail?

The domain name system (DNS) is a naming database in which internet domain names are located and translated into internet protocol (IP) addresses. The domain name system maps the name people use to locate a website to the IP address that a computer uses to locate a website.

What do you mean by DNS in computer network?

DNS is a directory service that provides a mapping between the name of a host on the network and its numerical address. DNS is required for the functioning of the internet. DNS is a service that translates the domain name into IP addresses.

Is DNS a protocol?

(Although many people think “DNS” stands for “Domain Name Server,” it really stands for “Domain Name System.”) DNS is a protocol within the set of standards for how computers exchange data on the internet and on many private networks, known as the TCP/IP protocol suite.

What is the purpose of DNS?

Domain Name Servers (DNS) are the Internet’s equivalent of a phone book. They maintain a directory of domain names and translate them to Internet Protocol (IP) addresses. This is necessary because, although domain names are easy for people to remember, computers or machines, access websites based on IP addresses.

What layer is DNS?

In OSI stack terms, DNS runs in parallel to HTTP in the Application Layer (layer 7). DNS is in effect an application that is invoked to help out the HTTP application, and therefore does not sit “below” HTTP in the OSI stack. DNS itself also makes use of UDP and more rarely TCP, both of which in turn use IP.

How many types of DNS are there?

3 types of DNS servers—DNS Resolver, DNS Root Server and Authoritative Name Server. 10 types of common DNS records—including A, AAAA, CNAME, MX and NS.

What is DNS and its purpose?

Domain Name Servers (DNS) are the Internet’s equivalent of a phone book. They maintain a directory of domain names and translate them to Internet Protocol (IP) addresses. This is necessary because, although domain names are easy for people to remember, computers or machines, access websites based on IP addresses.

What are the two types of DNS?

What are the different types of DNS server? All DNS servers fall into one of four categories: Recursive resolvers, root nameservers, TLD nameservers, and authoritative nameservers.

How do you use DNS?

Windows

  1. Go to the Control Panel.
  2. Click Network and Internet > Network and Sharing Center > Change adapter settings.
  3. Select the connection for which you want to configure Google Public DNS.
  4. Select the Networking tab.
  5. Click Advanced and select the DNS tab.
  6. Click OK.
  7. Select Use the following DNS server addresses.

What is default gateway IP?

Ad. In the networking world, a default gateway is an IP address that traffic gets sent to when it’s bound for a destination outside the current network. On most home and small business networks—where you have a single router and several connected devices—the router’s private IP address is the default gateway.

What are the three domains of DNS?

DNS is a TCP/IP protocol used on different platforms. The domain name space is divided into three different sections: generic domains, country domains, and inverse domain.

What are the services provided by DNS?

DNS provides a few other important services in addition to translating hostnames to IP addresses:

  • Host Aliasing. A host with a complicated hostname can have one or more alias names.
  • Mail Server Aliasing. For obvious reasons, it is highly desirable that e-mail addresses by mnemonic.
  • Load Distribution.

What is the structure of DNS?

DNS uses a hierarchy to manage its distributed database system. The DNS hierarchy, also called the domain name space, is an inverted tree structure, much like eDirectory. The DNS tree has a single domain at the top of the structure called the root domain. A period or dot (.) is the designation for the root domain.

What are two uses of DNS?

It is mainly used to convert human meaningful names (domain name) to computer meaningful name (IP address) in Internet. This is because computers can only recognize IP addresses. It allows you to use internet more easily by allowing you to specify a meaningful name on your web browser instead of using IP address.

Who invented DNS?

Paul V. Mockapetris

How do you refresh DNS?

The first step to flushing your DNS is to open your “Windows Command” prompt.

  1. WinXP: Start, Run and then type “cmd” and press Enter.
  2. Vista, Window 7 and Windows 8: Click “Start” and type the word “Command” in the Start search field.
  3. In the open prompt, type “ipconfig /flushdns” (without the quotes).