713.2 Automate System Administration Tasks by Scheduling Jobs (weight: 2) BSD-SPECIALIST Practice Questions (Page 5)

Questions 21–24

1. 21foundation · easy

   What is a key difference between the system crontab (/etc/crontab) and user crontabs?

   • AUser crontabs can only be edited by root.
   • BThe system crontab uses a different time format than user crontabs.
   • CThe system crontab includes a user field, while user crontabs do not.
   • DUser crontabs are stored in /etc/crontab.
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2. 22foundation · easy

   Which of the following is a standard interval at which BSD periodic system scripts are scheduled to run?

   • AEvery minute
   • BAt boot time
   • CDaily
   • DHourly
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4. 23expert · hard

   A user 'carol' needs to edit her crontab, but the system has /etc/cron.allow containing only 'root'. The administrator wants to allow carol to edit her crontab without granting her access to other users' crontabs. What should the administrator do?

   • ASet the setuid bit on /usr/bin/crontab
   • BRemove /etc/cron.allow and rely on /etc/cron.deny
   • CCreate a crontab for carol using crontab -u carol -e
   • DAdd 'carol' to /etc/cron.allow
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5. 24expert · hard

   A FreeBSD server runs critical daily periodic scripts. The administrator wants to ensure that if a script fails, the error is captured and the administrator is notified via email. The current /etc/crontab entry for daily periodic is: 30 3 * * * root periodic daily. What is the most effective way to achieve this?

   • AModify the crontab entry to: 30 3 * * * root periodic daily 2>&1 | mail -s "Daily periodic" admin@example.com
   • BSet daily_status_enable="YES" in /etc/periodic.conf
   • CSet the MAILTO variable in /etc/crontab to admin@example.com
   • DAdd a separate crontab entry to check the exit status of the periodic script.
   Reveal Solution Discussion Select an answer first