Therefore, to access the DNS server, you must have a web browser or an e-mail client installed on your computer.Ĭhrome, Opera, Firefox, and Safari are some of the most popular browsers. It is a program on the client computer that assists in connecting to a DNS server.Ī web browser and mail client are the most widely used resolvers. How DNS worksĭNS is not self-contained it requires extra programs, one of which is a resolver.Ī resolver is client-side software that makes it easier to connect to a DNS server.
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Therefore, one does not need to carry around a catalog full of IP addresses.ĭNS associates hostnames that humans can remember (such as with IP addresses that computers can remember (e.g., 172.217.170.164). It has a list of hostnames (domains) and IP addresses.ĭNS helps users to connect to all types of websites by remembering their domain hostnames.
Definition of DNS and its workflowĭNS (Domain Name System) is a TCP/IP protocol that defines how application processes in different systems exchange messages.ĭNS functions similarly to an internet-based database. The Internet Assigned Numbers Authority creates and allocates IP addresses to devices. IP addresses are not just random numbers that one can assign to a host. This means that the range of an IP address is from 0.0.0.0 to 255.255.255.255. There are also IPv6 addresses that use six-digit numbers in 128-bit format.Įach integer in the set can be anywhere between 0 and 255. IP addresses are four-digit numbers in a 32-bit format known as IPv4 addresses.
Every host has a unique identification number that distinguishes it from other online devices. A host is a computer that can connect to the internet.
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