Which two actions should an Oracle Linux administrator perform to configure a server so that its clock is synchronized with a reference time server? (Choose two.)

• A.Run the ntpd daemon to update the system clock, thereby keeping it synchronized with the reference time server
• B.Run ntpd at system boot to ensure that the system clock is synchronized with the reference time server
• C.Run ntpdate at system boot to ensure that the system clock is synchronized with the reference time server
• D.Run rdate at system boot to ensure that the system clock is synchronized with the reference time server
• E.Run the ntpdate daemon to update the system clock, thereby keeping it synchronized with the reference time server
• F.Run the rdate daemon to update the system clock, thereby keeping it synchronized with the reference time server

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Examine some of the contents of the /boot/grub/grub.com file from an Oracle Linux system:
Default=0
Timeout=5
Splashimage=(hd0, 0)/grub/splash.xpm.gz
Hiddenmenu
Title Oracle Linux Server (2.6.39-100.0.12.16uek.x86_64)
Root (hd0, 0)
Kernet /vmlinuz-2.6.39-100.0.12.e16uek.x86_64 ro root=UUIP=a4b6049b-9aa1-44b4-87cf-aebb17alcdf9 rd_NO_LUKS re_NO_LVM rd_NO_DM LANG=en_US.UTF-8 SYSFONT=1atarcycreheb-sun16 KEYBOARDTYPE=PC KEYTABLE=us rhgb quiet numa=off Initrd /initramfs-2.6.39-100.0.12.e16uek.x86_64.img Title Oracle Linux Server (2.6.32-131.0.15.e16.x86_64) Root (hd0, 0) Kernel /vmlinuz-2.6.32-131.0.15.e16.x86_64 ro root=UUIS=a4b6049b-9aa1-44b4-87cf-aebb17a1cdf9 rd_NO_LUKS rd_NO_LVM rd_NO_LVM re_NO_MD rd_NO_DM LANG=en_UD.UTF-8 SYSFONT=latarcyheb-sun16 KEYBOARDTYPE=PC KEYTABLE=us Crashkernel=auto rhgp quiet numa = off Initrd /initramfs-2.6.32-131.0.15.e16.x86_64.img Which three statements are true about the behavior and configuration of GRUB on this system?

• A.(hd0, 0) represents the first partition on device /dev/hd0.
• B.The hiddenmenu directive hides the GRUB menu only for 5 seconds after which it becomes visible again.
• C.The root directive specifies an initial root filesystem, allowing access to block device modules to mount the real root filesystem on disk.
• D.(hd0, 0) represents the first partition on the first drive detected by the BIOS.
• E.The initrd directive specifies the initamfs, an initial root filesystem in RAM, allowing access to block device modules to mount the real root filesystem.
• F.Each kernel must have an initramfs that matches the version of the kernel.
• G.Because there is an Unbreakable Enterprise Kernel installed, it must be the default kernel listed as shown by the default=0 directive.

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The default locations and paths used by logwatch are:
/etc/logwatch/conf /user/share/logwatch/default.conf /user/share/logwatch/dist.conf
Which three statements are true logwatch installation and configuration?

• A.After installing logwatch, you must create /etc/logwatch/conf to produce reports from system logs.
• B.After installing logwatch, the /usr/share/logwatch/dist.conf directory will not exist because it is optional.
• C.After installing logwatch, all the default directories continue to exist.
• D.Running /usr/sbin/logwatch produces a report of the previous day's log files.
• E.To produce a report from the previous day's logs, the - - range yesterday parameter must be specified.
• F.After installing logwatch, no configuration is required to produce reports from system logs.

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Which two actions are the required steps to prevent: non-root ssh access to the system?

• A.Ensuring that /etc/pam.d/sshd includes: account sufficient pam_nologin.so
• B.Create the /etc/nologin/login.deny file containing a single line +all
• C.Creating the /etc/nologin.allow file containing a single line root
• D.Creating the /etc/nologin file
• E.Ensuring that /etc/pam.d/sshd includes: account requiredpam_nologin.so

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Which two statements are true concerning a GUID Partition Table (GPT)?

• A.It supports named disk partitions.
• B.It supports primary and extended partitions.
• C.It supports disks greater than two terabytes.
• D.It cannot be used on the system disk.
• E.It supports only up to 16 partitions.

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