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1. Examine the dtrace command:

dtrace -P syscall

Which statement is true about this command?

2. Examine this extract from /etc/httpd/conf/httpd.conf for virtual hosts:

<VirtualHost *:80>

ServerAdmin [email protected]

DocumentRoot /www/docs/site1.example.com

ServerName site1.example.com

</VirtualHost>

<VirtualHost *:80>

ServerAdmin [email protected]

DocumentRoot /www/docs/site2.example.com

ServerName site2.example.com

</VirtualHost>

Which three statements are true about the configuration extract?

3. Examine the code fragment from /etc/tgt/targets.conf:

<target iqn.2013-03.com.example.mypc:1>

backing-store /iSCSIsharedDisk/physDisk1.img

write-cache off

</target>

<target iqn.2013-03.com.example.myps:2>

backing-store / iSCSIsharedDisk/physDisk2.img

initiator-address 192.0.2.105

initiator address 192.0.2.106

write-cache off

</target>

<target iqn.2013-03.com.example.mypc:3>

backing-store /iSCSIsharedDisk/physDisk3.img

write-cache off

</target>

Which statement is true?

4. Which three statements are true about an RPM SPEC file?

5. Examine the parameters shown using the sysctl command relating to panic situations:

[[email protected] etc]# sysctl Ca |grep panic |grep Cv hung

kernel.panic = 0

kernel.panic_on_oops = 0

kernel.softlockup_panic = 0

kernel.unknown_nmi_panic = 0

kernel.panic_on_unrecovered_nmi = 0

kernel.panic_on_io_nmi = 0

kernel.panic_on_oom = 2

[[email protected] etc]# sysctl Ca |grep hung

kernel.hung_task_panic = 0

kernel.hung_task_chek_count C 4194304

kernel.hung_task_timeout_secs = 120

kernel.hung_task_warnings = 10

Which two statements are true about system behavior?

6. Which two options prevent unauthorized access to the named service from the rndc utility on Oracle Linux?

7. After creating empty mount point /xfs1, you execute the command:

# mkfs Ct xfs CL /xfs1 Cl logdev=/dev/sdd1 /dev/sdh1

Which two statements are true about the effects of executing the mkfs command?

8. Examine the contents of /etc/mail/access:

This system is to be used as an MTA or mail gateway for the local LAN network address 192.168.1.0/24.

Which two actions allow this mail host to route email for the network?

9. Which two statements are true about recursive nameservers that are supported by Oracle Linux?

10. What is function of the System Security Service Daemon (SSSD)?

11. While copying a file to the /users file system, which is located on /dev/sdd1, you receive an error:

$ cp /etc/oratab /users/oracle

cp: cannot create regular file ‘/users/oracle/oratab’: Disk quota exceeded

You examine your assigned quota as shown:

$ quota Cg

Disk quotas for user oracle (uid 500):

Which option represents the reason for receiving the Disk quota exceeded error?

12. Which three statements are true about accessing Windows shares from Linux with SAMBA on Oracle Linux?

13. Which two statements are true about container template scripts?

14. For which domain or domains does the default cache-only nameserver have a list of authoritative servers in the /var/named/named. cafile?

15. Examine the virt-installcommand.

# virt-install

--connect qemu:///system

--virt-type kvm

-- name test

-- ram 500

--disk path =/var/lib/libvirt/images/test.img, size=4

--cdrom /home/user01/DownLoads/OracleLinux-R6-U5-Server-x86_64-dvd.iso

--os-variant oe16

Which two statements are true?

16. Examine the udevadm command:

udevadm info --query=all --name=/dev/sdb

What does this command display?

17. Which two statements are true about the configuration of kdump for capturing a dump image after a kernel crash?

18. Which three statements are true about the Kickstart installation method?

19. Examine the sequence:

# sealert Cl dda34207-61fd-4de2-831d-039c79270864

SELinux is preventing /usr/sbin/httpd from read access on the

file /var/www/manual/new_features_2_2.html.

***** Plugin restorecon (85.9 confidence) suggests *****

If you want to fix the label.

/var/www/manual/new_features_2_2.html default label should be httpd_sys_content_t.

Then you can run restorecon.

Do

# /sbin/restorecon Cv /var/www/manual/new_features_2_2.html

***** Plugin catchall_boolen (7.33 confidence) suggests *****

If you want to allow httpd to read user content

Then you must tell SELinux about this by enabling the ‘httpd_read_user_content’ boolean. You can read ‘user_selinux’ man page for more details.

Do

setsebool CP httpd_read_user_content 1

What action must you take for fix this problem?

20. Which two statements are true about SELinux in enforcing mode?

21. Which two statements are true about OCFS2 heartbeats?

22. Examine the udevadm command:

udevadm info --attribute-walk --name =/dev/sdb

Which two statements are true about this command/

23. Which two parameters are valid networking modes for a Linux container (LXC)?

24. Which three statements are true about support for the XFS file system in Oracle Linux?

25. Identify the two commands that can be used to set SELinux file labels back to their default values.

26. Examine the dtrace command.

dtrace q n syscall:::

Which two statements are true?

27. Which statement describes the default network set up by an Oracle template script?

28. Consider a cgroup configuration in the /etc/cgconfig.conffile:

mount {

cpuset = /cgroup/A;

cpu = /cgroup/A;

cpuacct = /cgroup/cpuacct;

}

group A1 {

perm {

admin {

uid = root;

gid = wheel;

}

task {

uid = root;

gid = users;

}

}

cpuset {

cpuset.mems=”0”;

cpuset.cpus=”0”;

}

cpu {

cpu.shares=”5”;

}

}

group A2 {

perm {

admin {

uid = root;

admin {

uid = root

gid = root;

}

task {

uid = root;

gid = users;

}

}

cpuset {

cpuset.mems=”0”;

cpuset.cpus=”1”;

}

cpu {

cpu.shares=”5”;

}

}

Which two statements are true?

29. You want to create a new LUN, LUN ID =1, on a new target, target ID = 2.

Inspect the current state of targets and LUNs in the output from tgt-admin Cs.

The output is filtered to show only target and LUN associations.

[[email protected] init.d]# tgt-admin Cs | egrep Ci ‘target|lun’

Target 1: iqn.2013-03.com.example.mypc:1

LUN information:

LUN: 0

LUN: 1

LUN: 2

LUN: 3

You want to add a new LUN to a new target by using the /iSCSIsharedDisk/physDisk4.img disk image file.

Which two options would you use to do this?

30. Which statement is true about the net_cls cgroup subsystem?

31. btrfs device delete /dev/sdb /dev/sdd

What is the correct order to delete the /dev/sdb device from the btrfs file system and for defragmenting the reduced file system?

32. What statement is true about udev?

33. Consider the features of virtualization modes.

Which three statements are correct?

34. What statement describes the iSCSI client system's iSCSI database?

35. Which three statements are true about an OpenLDAP server?

36. Which two statements are true about building binary RPMs using rpmbuild?

37. Examine the dtrace command.

dtrace Cn ‘proc:::exec {trace(execname);trace(pid);trace(stringof(arg0));}’

Which two statements are true?

38. o2cb configure

39. 0.2.1:3260,1 iqn.2013-03.com.example.mypc:1

Which option represents the correct command or commands to establish iSCSI sessions with the target portal 192.0.2.1:3260?

40. Start the ypbind service

41. Which three types of output may be obtained from commands from the crash utility in Oracle Linux?

42. Which statement is true about btrfs file system devices?

43. Which two statements are true about debugging OCFS2?

44. Consider the features and capabilities of Kernel-based Virtual Machine (kvm).

Which two statements are correct?

45. Which three statements are true about Btrfs copy --reflink?

46. Examine the dtrace command:

dtrace n syscall::read:entry

Which two statements are true?

47. Examine the output of the lscgroup command:

cpuset, cpu, memory:/

cpuset, cpu, memory:/A2

cpuset, cpu, memory:/A2/A3

cpuset, cpu, memory:/B1

cpuset, cpu, memory:/A1

blkio:/

blkio:/B1

cpuacct:/

Which statement changes the shares parameter of the cpu subsystem for the group A3 to a value of 2?

48. Examine the D script:

syscall::write:entry

{

@[execname] = avg(arg2);

}

Note that the third argument to the write (2) system call is the size of the write being made.

Which statement is true about this D script?

49. Examine the UserDir directives in this extract from /etc/httpd/conf/httpd.conf:

Ifmodule mod_userdir.c>

UserDir enabled user1

UserDir disabled user1

UserDir public_html

</ifModule>

The web server URL is http://host01.

A website exists in the user's directory /home/user1/public_html.

A user attempts to access user1's webpages by using the URL:

http://host01/~user1

Which statement describes the outcome?

50. Which two statements are correct about features and capabilities of virtualization in Oracle Linux?

51. Consider the device-mapper-multipathpackage and configuration.

Which statement is true?

52. Restart mail services by using: service postfix restart.

53. Which three features are included in the OCFS2 file system?

54. A system has several multipathed devices. Some of them are in use with mounted file systems.

The remaining multipathed devices are unused.

The multipath command with the ­-F option is issued as shown:

[[email protected] /]# multipath ­-F

Which statement is true?

55. There are two network adaptors, eth0 and eth1.

The bind package has already been installed and the network service stopped.

Which four actions must be performed to implement this requirement?

56. Which statement is true about configuring a nameserver in Oracle Linux?

57. Which statement is true about BTRFS RAID?

58. Which three server types are made possible by installing SAMBA on Oracle Linux and activating SAMBA services?

59. cryptsetup /cryptfs

Which option represents the commands in the correct order to create a file system that meet the requirements?

60. What does a template script set up?

61. Reboot the system.

Which option represents the steps in the correct order to enable PAM to use cgroup rules for a logged-in user?

62. Which two commands can be used to find the cgroup to which a given process with PID belongs?

63. You create an XFS file system by using the command:

# mkfs Ct xfs CL /xfs1 Cl logdev=/dev/sdd1 /dev/sdh1

You create the mount point /xfs1 and want to mount the file system on its mount point, before adding an entry for the file system to /etc/fstab.

Which two commands can you use to do this?

64. Examine the output of the command:

lssubsys Cam

devices

freezer

net_cls

perf_event

hugetlb

Now the lssubsys command is executed and new output is generated:

ssubsys am

ssubsys Cam

devices

perf_event

hugetlb

Which command or sequence of commands is correct?

65. Which two statements are true about the sendmail and postfix programs?

66. Consider the features and capabilities of DTrace in Oracle Linux.

Which two statements are true?

67. Which two occur when you run the command:

[[email protected] /root] rndc reload

68. Which three statements are true about the architecture and capabilities provided by SAMBA when installed on an Oracle Linux server?

69. Match the web server directives to their description:

70. You run the crash utility on an Oracle Linux system after a kernel panic and use the bt -a command as shown:

crash> bt Ca

PID: 286 TASK: c0b3a000 CPU: 0 COMMAND: “in.rlogind”

#0 [c0b3be90] crash_save_current_state at c011aed0

#1 [c0b3bea4] panic at c011367c

#2 [c0b3bee8] tulip_interrupt at c01bc820

#3 [c0b3bf08] handle_IRQ_event at c010a551

#4 [c0b3bf2c] do_8259A_IRQ at c010a319

#5 [c0b3bf3c] do_IRQ at c010a653

#6 [c0b3bfbc] ret_from_intr at c0109634

#7 [c0b3bfbc] sys_select at c012f803

#8 [c0b3bfc0] system_call at c0109598

Which two statements are true about the purpose of the bt a command?

71. Which three statements are true about the contents of the /etc/ocfs2/cluster.conf configuration file?

72. What are two ways to invoke the rescue procedure for Oracle Linux while booting from the installation media?

73. A new iSCSI target configuration is created in /etc/tgt/targets2.confusing a text editor. The file is used to avoid accidental destructive errors in the normal working configuration file /etc/tgt/targets.conf while testing is in progress.

Which command would you use to activate this configuration without affecting the default configuration file?

74. Which statement is true about udev?

75. Which two statements about the yum-fs-snapshot plugin are true?

76. After settings up encryption for /dev/sdd1, you notice that the file system is not mounted during system startup.

You suspect a configuration error in /etc/crypttab:

# cat /etc/crypttab

Assume that /etc/fstabis correct. Identify the reason why the file system is not mounted after system startup.

77. Examine this command and its output:

# yum history list

Loaded plugins: security

history list

Which command must you use to undo the last two yum transactions?

78. Users report 403-Forbidden errors while accessing Apache manuals after you enabled SELinux.

Examine the contents of /var/www/manual:

# ls CZa /var/www/manual

drwxr-xr-x. root root system_u: object_r:httpd_sys_content_t:s0 .

drwxr-xr-x. root root system_u: object_r:httpd_sys_content_t:s0 ..

-rw-r--r--. root root system_u: object_r:user_home_t:s0 bind.html

-rw-r--r--. root root system_u: object_r:user_home_t:s0 caching.html

-rw-r--r--. root root system_u: object_r:user_home_t:s0 configuring.html

-rw-r--r--. root root system_u: object_r:user_home_t:s0 content-negotiation.html

-rw-r--r--. root root system_u: object_r:httpd_sys_content_t:s0 convenience.map

Identify two commands that will resolve the 403- Forbidden errors.

79. Examine the D scrypt:

syscall::read:entry,

syscall::write:entry

/pid == $1/

{

ts[probefunc] = timestamp;

}

syscall::read:return,

syscall::write:return

/pid == $1 && ts[probefunc] != 0/

{

printf(“%d nsecs”, timestamp C ts[probefunc]);

}

Which statement is true about this script?

80. A container has a runaway process that is consuming all of its allotted CPU time. You want to temporarily stop this container from using any more CPU so that you can inspect it and try to correct the problem.

Which command would you run?

81. Users must be able to publish private HTML content.

You issued these commands:

# setenforce enforcing

# semanage login Cd Cs guest_u guest

# setsebool CP httpd_enabled_homedirs on

Which requirements do you meet?

82. Which three statements are true about the crash utility in Oracle Linux?

83. You have a btrfs file system mounted on the /btrfs mount point:

# btrfs filesystem show

Label: ‘Btrfs’ uuid: 7bfe3239-47ee-442b-b9f8-49f88b6b1be4

Total devices 2 FS bytes used 200.37MB

devid 2 size 4.88GB used 1.51GB path /dev/sdd

devid 1 size 4.88GB used 1.51GB path /dev/sdc

You have a list of subvolumes and snapshots:

# btrfs subvolume list ­pgct /btrfs/DocumentsSV

Which three statements could you use to mount the DocumentsSV_Tuesday_Backup path on the / restored_backup mount point?

84. Users must be able to publish private HTML content.

You issued these commands:

# setenforce enforcing

# semanage login Ca Cs guest_u guest

# setsebool httpd_enabled_homedirs on

Which requirements do you meet?

85. You have a mounted mirrored btrfs file system in RAID-1 on /btrfs:

# btrfs filesystem show

Label: ‘Btrfs’ uuid: 7bfe3239-47ee-442b-b9f8-49f88b6b1be4

Total devices 2 FS bytes used 250.46MB

devid 2 size 4.88GB used 1.54GB path /dev/sdd

devid 1 size 4.88GB used 1.54GB path /dev/sdc

You found an error on one device:

#btrfs scrub start CB Cd Cr /btrfs

scrub device /dev/sdc (id 1) done

scrub started at Wed Aug 21 15:33:05 2013 and finished after 6 seconds

total bytes scrubbed: 250.34MB with 0 errors

scrub device /dev/sdd (id2) done

scrub started at Wed Aug 21 15:33:05 2013 and finished after 6 seconds

total bytes scrubbed: 250.39MB with 26 errors

error details: read=13 csum=13

corrected errors: 13, uncorrectable errors: 0, unverified errors: 0

Which statements repairs the corrupted blocks?

86. Its block size must be 4096 bytes.

You execute the command:

# mkfs Ct xfs CL /xfs1 Cl logdev=/dev/sdd1 Cd size=4g /dev/sdh1

Which requirements do you meet?

87. Which two statements are true about the cpuset cgroup subsystem?

88. Which command can be used to display the parameters of a given cgroup in the cpuset subsystem?

89. What is the purpose of the kpartx command?

90. Examine these commands and their output:

# mount | grep xfs

/dev/mapper/vg_xfs_xfs1 on /xfs1 typr xfs (rw, quota_

# xfs_quota Cx Cc ‘enable Cu’ /xfs1

# xfs_quota Cx Cc ‘enable Cg’ /xfs1

XFS_QUOTAON: Invalid argument

Identify the reason for the "Invalid argument" error.

91. Examine the contents of the dhcp configuration file:

# cat /etc/dhcp/dhcpd.conf

subnet 192.168.100.0 netmask 255.255.255.0 {

range 192.168.100.100 192.168.100.200;

}

host host100 {

hardware ethernet 00:0c:29:B9:07:41;

fixed-address 192.168.100.100;

}

Which statement is true about this DHCPD configuration?

92. Which single statement is true for creating a labeled filesystem in RAID-1 on devices /dev/sdc and /dev/ sdd?

93. Which statement is true about OCFS2 file system creation?

94. You construct a new udev rule to name a specific removable device, but the rule does not appear to work.

Which command would you use to troubleshoot the new rule?

95. You dynamically configure a system to concurrently run tasks A1 and A2 using these commands:

# mkdir /cgroup/cpu

# mount Ct cgroup Co cpu cpu /cgroup/cpu

# mkdir /cgroup/cpu/A1

# mkdir /cgroup/cpu/A2

# echo 5 > /cgroup/cpu/A1/cpu.shares

# echo 5 > /cgroup/cpu/A2/cpu.shares

# mkdir /cgroup/cpuacct

# mount Ct cgroup Co cpuacct cpuacct /cgroup/cpuacct

You want to generate a /etc/cgconfig.conf configuration fail that contains the current cgroup configuration on the system.

Which command would you use?

96. Which two statements are true about OCFS2?

97. You install the lxc package.

Which command should you now run to ensure your kernel contains the necessary support to run containers?

98. Examine the configuration steps 1 through 5:

1 Discover iSCSI targets available to the client system.

2 Establish iSCSI sessions.

3 Start the iscsi initiator daemon.

4 Create iSCSI interfaces.

Which option represents the correct order for iSCSI client configuration?

99. When you are using OCFS2, which two statements are true about Linux kernel configuration and use?

100. Examine the zone definition taken from the /etc/named.conf file on host01.

There is a slave nameserver on host02.

Which two statements are true about this definition? (Choose two.)


 

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