Which of the following are common techniques for securing a sendmail server? (Select THREE
correct answers)

What does ntop use for data collection?

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An administrator has successfully configured a cryptographic volume for dmcrypt, and has added
the following line to /etc/fstab:
/dev/mapper/cryptvol /media/crypt auto defaults 0 0
Upon booting the system, the error message “mount: special device /dev/mapper/cryptvol does
not exist” is displayed. What configuration file has the administrator forgotten to edit? (Provide the
full path and filename)

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What command will remove the dmcrypt mapping named cryptvol? (Provide the command with
any options and parameters)

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Which LUKS action, when supplied to the cryptsetup command, will initialize a LUKS partition and
set the initial key? (Provide only the action name)

An administrator has created a mapping with the following command:
cryptsetup luksOpen /dev/sda1 cryptvol and has set three different keys. Which command below
will delete the first key?

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What command will list basic information about all targets available to cryptmount? (Provide the
command with any options or parameters)

Which of the following are valid dmcrypt modes? (Choose THREE correct answers)

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Which directive in the OpenVPN client.conf specifies the remote server and port that the client
should connect to? (Provide only the directive, without any options or parameters)

You are certain that your kernel has been compiled with ACL support, however, when you try to

set an ACL on a file, you get the following output:
% setfacl m user:hugh:r afile.txt
setfacl: afile.txt: Operation not supported
What is the most likely reason for this problem?