Question $11(1$ point$)$

Which of the following Linux Intrusion Detection Systems scan for changes to files on your system? $($Choose $2)$

Question $11$ options:

Tripwire

Snort

Port Sentry

AIDE

Question $12(1$ point$)$

What command below will create an image file from the contents of a directory?

Question $12$ options:

mkisofs

image

dd

dumpe$2$fs

Question $13(1$ point$)$

Which of the following commands can be used to unmount a filesystem?

Question $13$ options:

mkfs

fdisk

format

umount

Question $14(1$ point$)$

Which character tells the bash shell to run a command as a background process?

Question $14$ options:

$

$*$

$>$

&

Question $15(1$ point$)$

Which of the following are valid function declarations? $($Choose all that apply$)$

Question $15$ options:

myfunc $()\{$ echo Hello World; $\}$

myfunc $=()$ echo Hello World

function myfunc $=$ "echo Hello World";

function myfunc $()\{$ echo Hello World; $\}$

Question $16(1$ point$)$

Which of the following crontab entries would be executed at $2$:$04$am on Fridays only?

Question $16$ options:

$24**5$

$42*5*$

$42**5$

$24*5*$

Question $17(1$ point$)$

Which of the following is NOT a valid file when you issue the command: $1$s$-1?$

Question $17$ options:

$-$rwxr$-$xr$-$x

o$-$w$-$r$-$x$-$w$-$

srwx$-$w$-$rwx

drwxr$-$xrwx

Question $18(1$ point$)$

What can you do to improve the security of xinetd$-$managed daemons?

Question $18$ options:

Pray

Use a Linux IDS

Implement TCP wrappers

Implement PAM authentication

Question $19(1$ point$)$

Which of the following tar commands will extract an archive?

Question $19$ options:

tar$-$xzvf archive.tar.gz

tar$-$cf archive.tar$*$

tar$-$tvf archive.tar

tar$-$cvf archive.tar

Question $20(1$ point$)$

What command will change the root of the filesystem to the hard disk in System Rescue mode or on a Live DVD root shell?

Question $20$ options:

linux rescue

chroot$/$mnt$/$sysimage

chown root$/$

cd$/$