DNS Configuration - CompTIA A+ 220-1201 - 2.4

DNS stands for the domain name system and this is one of the most critical resources and services available on our networks that's because we use DNS to be able to provide IP addresses when all we remember is a fully qualified domain name for example you could type into your browser www.professormesser.com and behind the scenes a DNS resolution

occurs that translates the name www. professor into the IP address that is associated with that particular web server address this means that we don't have to remember any specific IP addresses all we have to remember is the name of the server that we want to communicate to behind the scenes DNS will make sure

that we're able to connect to that IP address DNS provides this resolution and many other features as well some of which we'll learn about in this video today this DNS database is a hierarchy that allows us to find the IP address of any fully qualified domain name on the worldwide internet we refer to DNS as a

distributed database because this is a database that is scattered throughout the entire internet portions of this database are contained on different servers located on different networks around the world if we were to drill down on the specifics of the DNS standard you would see that there were 13 separate root server clusters this

cluster is more than simply 13 separate servers in reality there are over a thousand servers making up that root server cluster that root cluster allows us to then communicate with DNS servers that are handling top level domains these generic top level domains or gtlds are the ones that you might recognize a.com a.org a.net and so on you might