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The correct answer is B.

OBJ-1.8: The analyst conducted banner grabbing. Banner grabbing is a technique used to learn information about a computer system on a network and the services running on its open ports. In the question, the command “nc test.diontraining.com 80” was used to establish a connection to a target web server using netcat, then send an HTTP request (HEAD / HTTP/1.1). The response contains information about the service running on the webserver. In this example, the server software version (Apache 2.0.46) and the operating system (Red Hat Linux). Cross-Site Scripting (XSS) attacks are a type of injection in which malicious scripts are injected into otherwise benign and trusted websites. XSS attacks occur when an attacker uses a web application to send malicious code, generally in a browser side script, to a different end-user. SQL injection is a code injection technique used to attack data-driven applications where malicious SQL statements are inserted into an entry field for execution, such as dumping the database contents to the attacker. A query to the WHOIS database would return information on the website owner, not the server’s operating system.

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