linux plus practice test Intermediate Practice Exam: Medium Difficulty 2025

A Linux server must boot into a non-graphical multi-user environment after maintenance, but you also want the ability to temporarily boot into rescue mode for break/fix without changing the default permanently. Which approach best meets the requirement?

A web service must be restarted automatically if it crashes, and logs should be reviewable using standard system tools. The service is managed by systemd. Which change best satisfies both requirements?

A server has a new 2TB disk that must be added to an existing LVM setup for /data. The /data filesystem should be expanded online with minimal downtime. Which sequence is the best approach?

A user reports they cannot access a shared directory that should allow group collaboration. The directory is owned by root:devs with permissions 2770. New files created inside the directory are not consistently inheriting the devs group. Which additional configuration most directly ensures consistent group ownership on new files?

You need to grant a junior admin the ability to restart only the nginx service and view its status, but nothing else requiring root. What is the most appropriate solution?

A database server should accept connections only from a specific application subnet. The OS firewall is in use, and the database service must remain enabled on boot. Which approach best meets the requirement with minimal exposure?

A team needs to periodically parse log files, extract IP addresses, and generate a summary report. The script must fail fast if a pipeline command fails, and it should be safe with unset variables. Which bash directive set best aligns with these requirements?

You are deploying a containerized application that must read a configuration file that changes occasionally without rebuilding the image. The configuration should persist across container restarts. Which is the best approach?

Users report intermittent DNS resolution failures on a Linux workstation. Network connectivity is stable, but only name lookups fail. You suspect a local caching resolver issue. Which sequence is the best next step to confirm and remediate quickly?

A system is running out of space on /var. You find large, rapidly growing log files. The system must retain 14 days of logs, compress older logs, and prevent a single log from consuming all disk space. Which solution best meets the requirement?