Questions: You want to identify the traffic that is generated and sent through a network by a specific application on a device. Which tool should you use? Certifier TDR Protocol analyzer Toner probe Multimeter

The answer is the third one: Protocol analyzer.

Explanation for each option:

1. Certifier: This tool is typically used to certify that a network cable installation meets specific standards and performance criteria. It is not used for identifying traffic generated by a specific application.

2. TDR (Time Domain Reflectometer): This tool is used to locate faults in metallic cables by sending a signal down the cable and measuring the reflections. It is not used for analyzing network traffic.

3. Protocol analyzer: This tool, also known as a network analyzer or packet sniffer, captures and analyzes the data packets that are transmitted over a network. It can be used to identify the traffic generated by a specific application on a device by examining the packet data and identifying the application layer protocols in use.

4. Toner probe: This tool is used to trace and identify cables by sending a tone through the cable and using a probe to detect the tone. It is not used for analyzing network traffic.

5. Multimeter: This tool is used to measure electrical properties such as voltage, current, and resistance. It is not used for analyzing network traffic.

Summary: To identify the traffic generated and sent through a network by a specific application on a device, you should use a protocol analyzer. This tool allows you to capture and analyze network packets to determine the source and nature of the traffic.