What are the different types of DNS cache?

Every single website on the web is using a DNS cache to improve the speed of website visits.

When a user clicks on a website URL (in another tab or in the address bar) to access your website, they are told by their computer which DNS server to use. The DNS server is like the mailman who delivers the website name from the DNS server to the Internet Protocol (IP) router that translates your website's URL into an IP address. DNS servers can be accessed through a web interface, a software program that comes with the internet modem/router or by using a command line option on the router. We will cover all three of these methods to access a DNS cache.

First off, we will cover what a DNS cache is, and the different types of cache DNS servers. Then we will move on to how we can use all three of these methods to access a DNS cache on the Internet.

What Is a DNS Cache? We use DNS to store what websites are connected to our computers and other devices. Your ISP (Internet Service Provider) or web host stores the DNS record in a DNS cache. Whenever we want to access a website we type in the DNS name (like google.com). But the default DNS name for the root domain, like www.com, is cache. So when we type in the root domain name www.com, our router does a DNS query and it returns an IP address for cache.com instead of returning an IP address for www.

A DNS cache holds the DNS records that have been queried before. There is only a small amount of information stored in the cache. There are two types of cache DNS servers: the recursive cache (also known as the default cache) and the authoritative cache. All of the DNS servers on the Internet should have a recursive cache, but only about 10% of them are authoritative caches. All caching DNS servers perform the same function; that is they hold the most recent record that you have queried. There are no big differences in the way these DNS servers work other than the type of DNS records cached. We will discuss both types of caching DNS servers in a minute.

What are the 4 types of DNS servers?

What is the DNS Root?

What is the DNS suffix and how do they work? Learn about all the functions of a DNS server.

DNS servers are used to translate domain names into IP addresses. They are very important for a website or any service on the Internet. There are four different types of DNS servers which can be used by a website to handle all its DNS needs.

The DNS Root refers to the top level of the Domain Name System (DNS). It is the place where the top-level domain of a domain is located. It is also the point where we will find the server that is responsible for handling the request for the IP address of a website.

It is a server which is responsible for handling the request for the IP address of a website. The domain name of a website is first split into its pieces before it reaches the DNS root. These pieces of the domain are then sent to the DNS root in search of the IP address. Once it has found the IP address of the website, it sends it back to the user's computer.

What is the DNS Root Address? The DNS root is the top-level domain of a domain. It is the part of the domain which doesn't have any subdomain or sub-subdomain. The DNS root address of a domain has only the .com, .org and .net in it. All other top-level domains contain their subdomain and sub-subdomain in their address.

For example, the root address of google.com is alexa. The root address of facebook.com is zuck.

There are four types of DNS servers. They are authoritative, recursive, delegated and caching.

Authoritative DNS server. In an authoritative DNS server, all the records are written and stored in a central location. It acts as a store of all the data about websites. Authoritative DNS servers are used by ISPs and companies which host websites for their customers.

Recursive DNS server. A recursive DNS server is one that recursively searches for a website's IP address. In this server, each record is looked up using the domain name of the website you're looking for.

What are five DNS record types?

To answer this question, you'll need to understand what DNS is and what each record type does.

DNS is a protocol that acts as the mapping between domain names and IP addresses. It maps a website name, like www.example.com, to the IP address of the server hosting the website. DNS records are used to store this information and are kept in a zone file on the DNS server. These are usually kept in a text file with a .ZONE file extension.

DNS records are divided into five main record types: A records. CNAME records. PTR records. MX records. As you can see, there are different types of DNS records depending on what data they store and how they are used. Let's take a look at them.

What is a DNS record? You can think of a DNS record as a way of storing some information about a website or web server. A DNS record contains all the data necessary to map a host name to an IP address. If you type a web address into your browser, it searches through the DNS to find out which website is hosting the information. It then connects to the website and displays it to you.

The DNS record consists of three sections. The first is the type of record. For example, in the following screenshot you can see that the A record is a type of DNS record that stores a website's IP address.

What are A records? An A record stores a website's IP address. This record type is useful for storing an IP address. When a web browser makes a request to a website, it will use the A record to find out what IP address the website is hosted on. The IP address is stored in the next section. The third section is the name of the website. This name is displayed by the web browser when the page is loaded.

In the example below, we can see that the IP address for example.com is stored in the A record. The name of the website, www.com, is stored in the host field.

What are NS records? A NS record stores the nameservers that will handle requests to the website. For example, if you type the domain name for example.com into your browser, it will make a request to the nameservers for the domain.