Linux OS Fundamentals GLIR Practice Questions (Page 9)

Questions 41–45

1. 41application · medium

   A developer reports that a custom script works when run manually from their shell but fails when executed via a cron job. The script relies on a custom environment variable that is set in the user's .bashrc. What is the most likely reason for the failure?

   • ACron jobs do not read .bashrc because they run in a non-interactive, non-login shell.
   • BThe script uses a relative path that is not available in the cron environment.
   • CThe script has incorrect permissions and cannot be executed by cron.
   • DCron runs the script as a different user.
   Reveal Solution Discussion Select an answer first
2. 42expert · hard

   A security audit reveals that a shared directory has the setgid bit set, and new files created in it inherit the group ownership of the directory. The auditor wants to ensure that new files do NOT inherit the group, but the directory must remain writable by the group. Which command should be used?

   • Achmod g+w /shared
   • Bchown :newgroup /shared
   • Cchmod 2775 /shared
   • Dchmod g-s /shared
   Reveal Solution Discussion Select an answer first
4. 43application · medium

   A server is experiencing slow performance. The administrator runs 'free -h' and sees that the system is using a large amount of swap space. Which additional command would best help determine if memory pressure is the root cause?

   • Avmstat 1 5
   • Bps aux --sort=-%mem
   • Cdf -h
   • Diostat -x
   Reveal Solution Discussion Select an answer first
5. 44foundation · easy

   Which component of the Linux boot process is responsible for initializing the hardware and loading the initial RAM disk?

   • AThe BIOS/UEFI
   • BThe bootloader
   • CThe init process
   • DThe kernel
   Reveal Solution Discussion Select an answer first
6. 45application · medium

   A forensic analyst needs to preserve the exact state of a compromised system for evidence. The system uses systemd. The analyst wants to ensure that when the system is rebooted for imaging, it boots into a minimal environment that does not start the network or any user-facing services, but still allows local console login for the imaging process. Which single command should the analyst use to set the default boot state?

   • Asystemctl set-default multi-user.target
   • Bsystemctl set-default emergency.target
   • Csystemctl set-default graphical.target
   • Dsystemctl set-default rescue.target
   Reveal Solution Discussion Select an answer first