Oracle Oracle Certifications 1Z0-105 Questions & Answers

• Question 81:

  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?

  A. An attempt to start DHCPD fails due to the conflicting lease declaration for address 192.168.100.100.

  B. A lease request from host100 always fails.

  C. A lease request from host100 fails only if address 192.168.100.100 is currently in use.

  D. A lease request from host100 succeeds if the host assigned to address 192.168.100.100 is currently offline.

  E. A lease request from host100 fails only if a previous lease on address 192.168.100.100 has expired.

  Correct Answer: D

• Question 82:

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

  A. mkfs –t btrfs –d raid1 /dev/sdc /dev/sdd

  B. mkfs.btrfs –d raid1 –L Btrfs /dev/sdc /dev/sdd

  C. mkfs.btrfs –r raid1 –L Btrfs /dev/sdc /dev/sdd

  D. mkfs.btrfs –L Btrfs /dev/sdc /dev/sdd

  Correct Answer: B

  Reference: https://www.howtoforge.com/a-beginners-guide-to-btrfs

• Question 83:

  Examine the list of requirements for an XFS file system:

  1.

  Its label must be /xfs1.

  2.

  It must mount automatically during system startup.

  3.

  The user data must be stored on /dev/sdh1.

  4.

  The journal data must be stored on /dev/sdd1.

  5.

  The journal must be 4GB in size.

  6.

  It must contain a real-time section.

  7.

  Its block size must be 4096 bytes.

  You execute the command:

  # mkfs –t xfs –L /xfs1 –l logdev=/dev/sdd1 –d size=4g /dev/sdh1

  Which requirements do you meet?

  A. 1, 3, 4, 7

  B. 1, 2, 3, 4, 7

  C. 1, 3, 4

  D. 1, 3, 4, 5, 7

  E. 1, 3, 4, 5, 6, 7

  F. 1, 2, 3, 4, 5, 6, 7

  Correct Answer: E

• Question 84:

  Which two statements are true about the cpuset cgroup subsystem?

  A. It assigns individual CPUs and memory nodes for NUMA-enabled architectures to cgroup tasks.

  B. It assigns individual CPUs on a multicore system to cgroup tasks.

  C. It controls CPU scheduling according to relative CPU shares of cgroup tasks.

  D. It reports the total CPU time used by cgroup tasks.

  Correct Answer: AC

  Reference: http://www.oracle.com/technetwork/articles/servers-storage-admin/resource-controllers-linux1506602.html

• Question 85:

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

  A. lscgroup | grep group | grep cpuset

  B. cgget -g cpuset cgroup

  C. lssubsys | grep group | grep cpuset

  D. cat /cgroup/cpuset/cgroup/params

  Correct Answer: C

  You can use the lssubsys command (which is included in the libcgroup package) to view the available kernel subsystems: # lssubsys -am cpuset cpu cpuacct memory devices freezer net_cls blkio

• Question 86:

  What is the purpose of the kpartx command?

  A. It is a graphical XWindows application to manipulate kernel partition tables.

  B. It is a graphical XWindows application to manipulate partition tables on disk.

  C. It prints virtual disk partition tables.

  D. It manipulates and prints virtual disk partition tables.

  E. It creates device maps from partition tables.

  Correct Answer: E

  The kpartx command creates device maps from partition tables. Each guest storage image has a partition table embedded in the file

• Question 87:

  Examine these commands and their output:

  # mount | grep xfs

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

  # xfs_quota –x –c ‘enable –u’ /xfs1

  # xfs_quota –x –c ‘enable –g’ /xfs1

  XFS_QUOTAON: Invalid argument

  Identify the reason for the "Invalid argument" error.

  A. User and group quotas cannot be enabled at the same time.

  B. Group quotas are already enabled.

  C. Project and group quotas cannot be enabled at the same time.

  D. The /xfs1 file system is mounted without the gquota option.

  E. The /xfs1 file system is mounted without the uquota and gquota options.

  Correct Answer: D

• Question 88:

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

  A. It can analyze only dumps produced by the kdump facility.

  B. It can analyze the state of the system while it is running.

  C. It can analyze only dumps produced by the Linux Kernel Crash Dumps (LKCD) facility.

  D. It can analyze the state of the system after a kernel crash has occurred by using the memory image file produced from the crash.

  E. The kernel-debuginfo and kernel-uek-debuginfo packages are not included in the Oracle Linux distribution.

  Correct Answer: ABD

• Question 89:

  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?

  A. mount LABEL=Btrfs –o subvol=DocumentsSV_Tuesday_Backup /restored_backup

  B. mount LABEL=Btrfs –o subvol=DocumentsSV /restored_backup

  C. mount LABEL=Btrfs –o subvolid=140 /restored_backup

  D. mount /btrfs/DocumentsSV_Tuesday_Backup /restored_backup

  E. mount LABEL=Btrfs –o subvolid=270 /restored_backup

  F. btrfs subvolume set-default 270 /btrfs; mount LABEL=Btrfs /restored_backup

  Correct Answer: ABC

• Question 90:

  Examine the current SELinux status:

  

  You have to meet these requirements:

  1.

  Network services must run in a confined domain.

  2.

  The guest user must be confined.

  3.

  The guest user must not be able to use Mozilla Firefox.

  4.

  Access to files and directories must be granted based only of the SELinux contexts.

  5.

  The SELinux configuration must be persistent across system restarts.

  6.

  Users must be able to publish private HTML content.

  You issued these commands: # setenforce enforcing # semanage login -a -s guest_u guest # setsebool httpd_enabled_homedirs on

  Which requirements do you meet?

  A. 1, 2, 6

  B. 1, 2, 4, 6

  C. 1, 2, 4, 5, 6

  D. 1, 2, 3, 4, 5, 6

  E. 1, 2, 3, 6

  F. 1, 2, 3, 5, 6

  Correct Answer: C