What is dns, domain, dhcp, router, modem

Question

Accepted Answer

DNS is a system that translates domain names to IP addresses, domain is a group of network resources under the same administration, DHCP assigns IP addresses to devices, router connects multiple networks, modem connects a computer to the internet.

DNS translates domain names to IP addresses (e.g. translating www.google.com to 172.217.3.100)
Domain is a group of network resources under the same administration (e.g. google.com)
DHCP assigns IP addresses to devices on a network dynamically (e.g. assigning 192.168.1.2 to a computer)
Router connects multiple networks together (e.g. connecting a home network to the internet)
Modem connects a computer to the internet (e.g. through DSL, cable, or fiber optic connection)

Accepted Answer

DNS  means Domain Name System - Translates website names into numbers. 
eg - When you type www.google.com, your computer asks DNS, “What number (IP address) is that?”
DNS says: “It’s 123 ip” → and now your browser knows where to go.
 The domain is A name used to find websites or organize computers.
Eg: google.com is a domain. or  facebook.com.
DHCP - Automatically gives your device an IP address when you connect.
Router- Connects your devices to the internet and each other.
Modem- Connects your home to the internet through your internet provider.

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