A security tester needs to verify if a remote port that relies on a handshake is open. Which technique is the best for confirming that the service is active?
A broadcast-based method that checks for responses from all devices
A minimal approach that avoids handshake signals and times out to identify open ports
A sequence that sends a partial request and interprets an unreachable message as a closed port
An approach that completes all steps in the connection sequence to confirm the service is active
Completing all aspects of the connection sequence verifies that the service truly accepts inbound requests. A partial request that waits for an unreachable message does not confirm whether the service actually accepts the connection. Broadcast queries locate responding devices but do not validate handshake-based ports. A minimal approach that times out can identify suspects but does not confirm a handshake.
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What is meant by completing all steps in a connection sequence?
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How does the method of sending a partial request differ from completing the full handshake?
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Why is a broadcast-based method not effective for handshake-based ports?