LFCS Exam Dumps - Linux Foundation Certified System Administrator

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Question # 25

In which file, if present, must all users be listed that are allowed to use the cron scheduling system? (Specify the full name of the file, including path.)

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Question # 26

To prevent a specific user from scheduling tasks with at, what should the administrator do?

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

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

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

Add the specific user to nojobs group.

Run the following: atd --deny [user].

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Question # 27

Which of the followingcommand sets the Bash variable named TEST with the content FOO?

set TEST="FOO"

TEST = "FOO"

var TEST="FOO"

TEST="FOO"

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Question # 28

Which utility would be used to change how often a filesystem check is performed on an ext2 filesystem without losing any data stored on that filesystem?

mod2fs

fsck

tune2fs

mke2fs

fixe2fs

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Question # 29

What word is missing from the following SQL statement?

__________ count(*) from tablename;

(Please specify the missing word using lower-case letters only.)

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Question # 30

Immediately after deleting 3 lines of text in vi and moving the cursor to a different line, which single character command will insert the deleted content below the current line?

i (lowercase)

P (uppercase)

p (lowercase)

U (uppercase)

u (lowercase)

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Question # 31

Which of the following commands will print the last 10 lines of a text file to the standard output?

cat -n 10 filename

dump -n 10 filename

head -n 10 filename

tail -n 10 filename