DNS is short for Domain Name System. It is simply a database that links meaningful names (known as hostnames), such as www.howtouselinux.com, to a specific IP address, such as 185.230.63.171. Each device connected to the Internet has a unique IP…
We can use the following steps to remove a datacenter in the Cassandra cluster. How long time it takes for a datacenter removal? On the bright side, the operation should be almost instantaneous (at least very quick), because this datacenter…
The traceroute command is used to trace the exact routing hops and the path that the packets take to the remote destination. This command’s purpose is to test and display the communication link between a source host and a destination…
In Cassandra, data in a replica can become inconsistent with other replicas due to the distributed nature of the database. Node repair corrects the inconsistencies so that eventually all nodes have the same and most up-to-date data. It is an…
EDNS stands for Extended DNS. EDNS gives us a mechanism to send DNS data in larger packets over UDP. The most popular implementation of EDNS is DNSSEC. History of EDNS Traditional DNS responses are typically small in size (less than…
A TXT record (short for text record) is a type of resource record in DNS. It is used to store descriptive text for the domain name. This type of record can be used to provide additional information about your domain,…
Linux find command is a powerful tool that can be used to locate and manage files and directories based on a wide range of search criteria. This means that we can provide it with a set of directories (or files)…
The dig command, which stands for Domain Information Groper, is a powerful and versatile command-line utility for querying Domain Name System (DNS) servers. For network administrators and developers, it is an indispensable tool for diagnosing DNS problems, verifying configurations, and…
DNS port is confusing for many people. In this article, we’ll describe how DNS works, and what DNS port numbers are used for DNS protocol. Port Usage TCP port 53: Large DNS responses (TCP is used when the DNS response…
TCP is defined as a connection-oriented and reliable protocol. We will check out how TCP connection works in this article. How TCP Connection Works? TCP allows for the transmission of information in both directions. This means that computer systems that…
