When using HAProxy to load balance requests over a set of web servers, what directive is needed in the HAProxy configuration in order to be able to log, on the backend web servers, the IP address of the client making a request?

• A.option clientlog
• B.option forwardfor
• C.option exposeclient
• D.option reverseproxy

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Which of the following sections are found in the Pacemaker configuration XML file?

• A.<configuration> and <status>
• B.<cluster> and <state>
• C.<pacemaker> and <corosync>
• D.<nodes> and <services>
• E.<ressources> and <services>

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How can you change the RAID level of an existing device?

• A.By reformatting the RAID device with the desired level.
• B.By modifying the /proc/sys/dev/raid/ file.
• C.Using the mdadm command with the --change-level option.
• D.By running the lvm command with the --change-level option.

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Which of the following commands can be used to safely test and preview Pacemaker configuration changes? (Choose TWO correct answers.)

• A.crm_shadow
• B.crm_test
• C.crm_lab
• D.crm_dryrun
• E.crm_simulate

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How can the state of the backing storage disks of a DRBD device be checked? (Choose TWO correct answers.)

• A.drbdadm dstate all
• B.drbdadm state --disk all
• C.cat /proc/drdb
• D.drbdadm diskstatus all
• E.cat /proc/drdb/status

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