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John works as a Network Administrator for Perfect Solutions Inc. The company has a Linux-based network. John is working as a root user on the Linux operating system. He executes the following command in the terminal: echo $USER, $UID. Which of the following will be displayed as the correct output of the above command?
Correct Answer: B
Explanation/Reference: Explanation: According to the scenario, John is a root user. Hence, the value of the environmental variables $USER and $UID will be root and 0, respectively.