Explain how you can specify which users are allowed to create cron jobs and which are not.
What will be an ideal response?
You can specify which users are allowed to create cron jobs and which aren't by creating the following two files:
• /etc/cron.allow. Users listed in this file can create cron jobs.
• /etc/cron.deny. Users who are not listed in this file can create cron jobs.
By default, the /etc/cron.deny file already exists with its own entries, including the following:
• guest
• gast
If the /etc/cron.allow file exists, it is the only file evaluated; /etc/cron.deny will be ignored in this situation. If neither of these files exists, only the root user is allowed to define user cron jobs.
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A mixed reference "locks" one part of the cell reference while the other part can change. _______________
Answer the following statement true (T) or false (F)
?When there are no system problems to be corrected or authorized enhancements to be made, access to the operational environment is limited to _____ and must strictly be controlled.
A. ?systems analysts B. ?users C. ?programmers D. ?managers
Describe the role of the Network Device Enrollment Service?
What will be an ideal response?
Three inline elements are
a. div, b, and span b. b, a, and img c. span, img, and h1 d. a, img, and ul