Explanation and definition of DNS cache
A DNS cache is a temporary cache memory used by DNS resolvers and other devices to store data. The DNS records that were initially applied to the domain names that were searched are kept in memory. These records contain information such as domain names’ IP addresses (IPv4 or IPv6), details about their email servers, services, authentication, verification information, and more. The DNS cache will save all of the data. However, as previously said, it will only last briefly because each DNS record has a TTL (Time to Live) value.
It is significant to notice that the DNS cache will momentarily contain all of the records for the different domain names. This is because the administrator sets the TTL (Time to Live) value, which determines how long it will last.
Users’ DNS queries can get faster responses thanks to this method, which also aids in effective resource optimization.
Are you looking for IPv6? If the answer is yes, you came to the right spot. Why? Because in this article, we will explore the definition of Internet Protocol version 6 (IPv6), what is its structure, and why it is so advantageous to implement it. So, if this fits your needs, let’s take deep into it!
Nslookup command explained
The Nslookup command is a helpful and very useful tool with a command-line interface (CLI). The abbreviation “nslookup” is short for “name server look up”. Typically, it is utilized for finding the IP address of a particular host or performing a Reverse DNS Lookup which is a process of finding a domain name that is associated with an IP address (IPv4 or IPv6). In most cases, it is pre-built on almost every operating system (OS). That is why it is a very popular choice for administrators.
The majority of today’s Internet traffic is routed through IPv4. This makes it extremely important and necessary. Today, in our article, we will look in-depth at its representation.
What does IPv4 mean?
IPv4 is an abbreviation for Internet Protocol version 4. It is the most common and widely used method. It was due to the advancement of TCP/IP. In 1982, SATNET, an early satellite network that shaped an earlier segment of the Internet, used it for the first time.
Learn more about the beginning of IPv4