102-500 Real Exam Dumps Questions and answers 81-90

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Question No.81

Which TWO statements about crontab are true?

  1. Every user may have their own crontab.

  2. Changing a crontab requires a reload/restart of the cron daemon.

  3. The cron daemon reloads crontab files automatically when necessary.

  4. hourly is the same as quot;0 * * * *quot;.

  5. A cron daemon must run for each existing crontab.

Correct Answer: AC

Question No.82

What is the conventional purpose of Linux UIDs that are lower than 100?

  1. They are reserved for super user accounts.

  2. They are reserved for the system admin accounts.

  3. They are reserved for system accounts.

  4. They are unused, aside from 0, because they are targets of exploits.

  5. They are used to match with GIDs in grouping users.

Correct Answer: C

Question No.83

A user was not given permission to use the CRON scheduling system. What file needs to be modified to provide that access? (Please specify the full path to the file)

Correct Answer: /etc/cron.allow

Question No.84

Which of the following fields can be found in the /etc/group file? (Choose THREE correct answers.)

  1. The list of users that belong to the group.

  2. The home directory of the group.

  3. The name of the group.

  4. The description of the group.

  5. The password of the group.

Correct Answer: ACE

Question No.85

Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays?

  1. 0 * * * 30 myscript

  2. 30 * * * 6 myscript

  3. 30 0 * * 0 myscript

  4. 30 0-23 * * 0 myscript

  5. 0 0-23 * * 30 myscript

Correct Answer: D

Question No.86

Which environment variable should be set in order to change the time zone for the commands run from within the environment variable#39;s scope? (Specify the variable name only.)

Correct Answer: TZ

Question No.87

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

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

  2. The batch command will run when system load is low. The at command runs at a specific time.

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

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

Correct Answer: B

Question No.88

How is the file format of /etc/crontab different from a normal crontab file? (Select TWO correct answers)

  1. The /etc/crontab file can specify a year field.

  2. A normal crontab file must be installed with the crontab command.

  3. A normal crontab file allows for environment variable substitution.

  4. The /etc/crontab file has a user field for commands.

Correct Answer: BD

Question No.89

On a system using shadowed passwords, the most correct permissions for /etc/passwd are and the most correct permissions for /etc/shadow are .

A. -rw-r-, -r

B. -rw-rr, -rrr

C. -rw-rr, -r

D. -rw-rrw-, -r-r

E. -rw-, -r

Correct Answer: C

Question No.90

You need to pause the CUPS printer HPLaserjet4, and you want to cancel all print jobs with a message, quot;helloquot;. Which command will do this?

  1. cupsreject -c -r hello HPLaserjet4

  2. cupsreject -p -m hello HPLaserjet4

  3. cupsdisable -c -r hello HPLaserjet4

  4. cupsdisable -p -m hello HPLaserjet4

Correct Answer: C

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