Comprehensive Detailed Explanation:The command output shown indicates that the analyst used a TCP connection test to check if communication on port 443 (usually HTTPS) succeeded. Here's why each option was or was not suitable:
* A. nmap: While nmap can scan ports, it does not provide direct feedback on connection success or failure in the manner shown.
* B. tnc (Test-NetConnection in PowerShell): This command in PowerShell is specifically designed to test connectivity to a specified port and IP address. The output (TcpTestSucceeded: False) is characteristic of the tnc command.
* C. ping: The ping command only tests ICMP echo replies and does not indicate success or failure on specific ports.
* D. tracert: tracert traces the path packets take to reach a host but does not provide a direct indication of port availability or success.
References:
Microsoft PowerShell Documentation: Test-NetConnection cmdlet, which details TCP port testing.
NIST SP 800-115: Technical Guide to Information Security Testing and Assessment, covering connectivity testing methods.