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Identify the correct sequence in which the following packets are transmitted on the network by a host when a browser requests a webpage from a remote server, assuming that the host has just been restarted.

1. HTTP GET request, DNS query, TCP SYN
2. DNS query, HTTP GET request, TCP SYN
3. DNS query, TCP SYN, HTTP GET request
4. TCP SYN, DNS query, HTTP GET request

Correct answer: DNS query, TCP SYN, HTTP GET request

Solution

The correct sequence starts with a DNS query to resolve the domain name into an IP address, followed by a TCP SYN packet to establish a connection with the server, and finally the HTTP GET request to retrieve the webpage.

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