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Exam contains 149 questions

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Question 31 🔥

Which of the following actions prevents a specific user from scheduling tasks using at or batch?

Which database solution meets these requirements?

A. Add the specific user to the /etc/at.allow file.

Highly voted

B. Add the specific user to the [deny] section in the /etc/atd.conf file.

Highly voted

C. Add the specific user to the /etc/at.deny file.

Highly voted

D. Add the specific user to the nojobs group.

Highly voted

E. Run atd --deny followed by the name of the specific user.

Highly voted

Discussion of the question

Question 32 🔥

What is the main difference between the batch and at commands?

Which database solution meets these requirements?

A. The batch command will run multiple times. The at command will only run once.

Highly voted

B. The commands of a batch job run sequentially one after another while the commands in at jobs may run in parallel.

Highly voted

C. The at command reads commands from standard input. The batch command requires a command line argument.

Highly voted

D. The at command e-mails results to the user. The batch command logs results to syslog.

Highly voted

Discussion of the question

Question 33 🔥

Why should a regular user edit his personal crontab by using the command crontab instead of just editing his crontab file manually?

Which database solution meets these requirements?

A. Because user specific crontab entries are stored in a common database and must be extracted before editing.

Highly voted

B. Because crontab starts the cron daemon in case it is not running due to no other crontab entries existing.

Highly voted

C. Because user specific crontab entries are stored in a special directory which is maintained by the cron daemon and not writable for regular users.

Highly voted

D. Because crontab collects information about all users crontabs and recommends similar commands used by other users of the system.

Highly voted

Discussion of the question

Question 34 🔥

What is true about groups in a Linux system? (Choose TWO correct answers.)

Which database solution meets these requirements?

A. Each user may be a member of several groups. However, only one group is the user's primary group.

Highly voted

B. Groups may have a password that allows users to join that group temporarily.

Highly voted

C. Each user can only be a member of one group at a time.

Highly voted

D. Group memberships are optional such that there may be users that do not belong to any group.

Highly voted

E. Groups can be nested meaning that one group can be a member of another group.

Highly voted

Discussion of the question

Question 35 🔥

What is true about UIDs and GIDs?

Which database solution meets these requirements?

A. UIDs and GIDs share a common number space. Each time a new user or group is created, the next free ID is assigned.

Highly voted

B. The first four digits of each UID are the GID of the primary group of that user.

Highly voted

C. The GID of a group is always the sum of the UIDs of its members.

Highly voted

D. The number space is split up. UIDs usually reside in the range from 0 to 32767 while GIDs reside in the range from 32768 to 65535.

Highly voted

E. There are distinct number spaces for UIDs and GIDs, i.e. the same number may be used as both a UID and a GID.

Highly voted

Discussion of the question

Question 36 🔥

What is true regarding the statement beginning with #! that is found in the first line of a script?

Which database solution meets these requirements?

A. It prevents the script from being executed until the ! is removed.

Highly voted

B. It specifies the path and the arguments of the interpreter used to run the script.

Highly voted

C. It is a comment that is ignored by the script.

Highly voted

D. It specifies the character encoding of the script.

Highly voted

Discussion of the question

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Exam contains 149 questions

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