Browser sends a DNS query to the configured DNS server in the network. DNS server responds with the IP address.
This is for name resolution. Network Connection is then established to the IP address received and the port number using TCP.
DNS uses recursive or iterative resolution. DNS messages are query and response. browser requests for ip address of the url in Query message and receives answer in response.

2 Users have rated as useful.
Login to rate this answer.
when we enter url, browser send ip address of url to the nearest ISP. Different ISP, this ip reach the DNS server. DNS server resolve the ip to name i.e. convert ip address to the web page and again send through the isp to the client
Login to rate this answer.