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A system administrator is tasked with creating a new virtual machine (VM) to host a lightweight web application. The VM will be deployed in a cloud environment. Which of the following VM configurations is the most appropriate for minimizing costs while ensuring adequate performance for the web application?

An administrator notices that a critical application service isn’t responding as expected on a Linux system. To diagnose the issue, which command should be used to display the current status of a service named ‘app_service’?

You need to find all occurrences of the term ‘error’ in ‘application.log’ and redirect both the output and errors from this operation to a file named ‘errors_found.txt’. Which command should you use?

To save the standard output of date to a file named current_date.txt and also display it on the screen, which command should you use?

To optimize their Docker image for a Python-based web application, a developer decides to use a multi-stage build process. What is the primary reason for using multi-stage builds in this context?