Which command would you use to gather banner information from a web server running on port 80?

The choice to use "curl -I " is aligned with the intent to gather banner information from a web server running on port 80. The "curl" command is a tool designed for transferring data using various protocols, including HTTP. When utilizing the "-I" option, it sends a HEAD request to the specified target IP, which prompts the server to respond with the HTTP headers. These headers typically contain banner information, including the server type and version, along with other metadata about the server’s response.

This method is straightforward for obtaining relevant details from web servers without the overhead of downloading the entire content of a web page, making it efficient for this purpose. Banner grabbing is a common reconnaissance technique used in penetration testing to gather information about the services running on a server, and using curl in this way is a direct approach to extracting such information.

Other choices present alternative options but serve different purposes. For instance, using nmap with the script option is a more comprehensive scanning tool for gathering detailed service version information, but it’s also more complex and potentially intrusive compared to a simple curl command. The dig command is used for DNS queries and gathering information about domain name systems, which is not applicable for direct HTTP server interaction. Lastly, using