John has scanned the web server with NMAP. However, he could not gather enough information
to help him identify the operating system running on the remote host accurately.
What would you suggest to John to help identify the OS that is being used on the remote web
server?

A.
Connect to the web server with a browser and look at the web page.

B.
Connect to the web server with an FTP client.

C.
Telnet to port 8080 on the web server and look at the default page code.

D.
Telnet to an open port and grab the banner.

Explanation:
Most people don’t care about changing the banners presented by applications
listening to open ports and therefore you should get fairly accurate information when grabbing
banners from open ports with,for example,a telnet application.