DNS Lookup Process in Web Operations
DNS lookup serves as the initial step when initiating network communication, such as loading a web page. When a user enters a website name into a browser and presses Enter, the client device immediately queries a DNS server to find the target IP address associated with that domain name.
Once the DNS server resolves the domain name into an IP address, the client can initiate the remaining protocol stack actions—such as establishing a TCP connection via the three-way handshake, setting up TLS encryption if HTTPS is used, and sending an HTTP request for web page resources.
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Prep Sessions
From Packets to Protocols: How Modern Networks Transmit Data @ University of Michigan - Ann Arbor
Ch.2 Addressing and Name Resolution - From Packets to Protocols: How Modern Networks Transmit Data @ University of Michigan - Ann Arbor
Domain Name System (DNS) - From Packets to Protocols: How Modern Networks Transmit Data @ University of Michigan - Ann Arbor
Learn After
Match each web operation action to its specific role during the web page loading process.
When initiating network communication to load a website, the client device immediately queries a DNS server to find the target ___ address associated with the domain name.
Place the protocol stack actions in the correct chronological order when loading an HTTPS web page after entering a website name.
What initial process is taking place, and what specific piece of data must the client receive before it can perform the TCP three-way handshake?