Oracle Oracle Certifications 1Z0-105 Questions & Answers

• Question 51:

  What is the purpose of the in-addr.arpa domain that is used in a zone file for DNS name resolution in Oracle Linux?

  A. to implement reverse name resolution for IPv4

  B. to resolve nameserver names in the in-addr.arpa top-level domain

  C. to implement reverse name resolution for IPv6

  D. to resolve host names in the in-addr.arpa top-level domain

  Correct Answer: C

  Reference: https://docs.oracle.com/cd/E19683-01/817-4843/dnsintro-94/index.html

• Question 52:

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

  

  Which statement is true?

  A. The syntax is invalid and causes the parser to fail when the target service is started. No LUN assignments are made and no disks are visible to the clients.

  B. The syntax is invalid but defaults apply. If you assign any LUN addresses manually, then you must assign all for that target. Therefore, default assignments apply. physDisk1.img = 1, phyDisk2.img = 2. phyDisk3.img = 3

  C. phyDisk1.omg is assigned the next available LUN number above the existing allocated numbers. LUN = 4

  D. phyDisk1.img is assigned the lowes available LUN number that is not assigned. LUN = 2

  Correct Answer: C

• Question 53:

  Examine the udev naming rule:

  

  Which three statements are true about this rule? (Choose three.)

  A. It matches devices with a default device name prefix of /dev/fd, for example: /dev/fd0.

  B. Symbolic links dev/floppy/0 through /dev/floppy/9 are created to reference kernel devices /dev/fd0

  through /dev/fd9. For example: /dev/floppy/0 -> /dev/fd0.

  C. It results in the creation of one symbolic link per matched device, replacing any existing symbolic links for the matched device.

  D. It results in the creation of a symbolic link identical to the default kernel device name.

  E. It results in the creation of one symbolic link per matched device.

  F. It matches devices with a default device name prefix of /dev/floppy/, for example: /dev/floppy/0.

  Correct Answer: ABC

• Question 54:

  When accessing a mounted file system that is based on an iSCSI device, the system hangs.

  Which two commands would help troubleshoot this problem? (Choose two.)

  A. fdisk –v

  B. iscsiadm –m session –P 3

  C. iscsiadm –m discovery -1

  D. fdisk -1

  E. iscsiadm –m node –v

  Correct Answer: BC

• Question 55:

  Which three statements are true about conversion to btrfs file systems? (Choose two.)

  A. If you roll back a btrfs conversion, you lose any changes that you made to the btrfs file system.

  B. You must run fsck to check and correct the integrity of the file system before converting it to btrfs.

  C. You can convert a bootable partition, such as /boot, to a btrfs file system.

  D. Converting the root file system is not possible by using the btrfs convert utility.

  E. If you delete the snapshot of an original file system to save storage space, you can still recover the original file system.

  F. The btrfs-convert utility converts an ext2, ext3, or ext4 file system to btrfs.

  Correct Answer: AF

  Reference: https://docs.oracle.com/cd/E37670_01/E37355/html/ol_use_case7_btrfs.html https://docs.oracle.com/cd/E37670_01/E37355/html/ol_use_case75_btrfs.html

• Question 56:

  Identity the minimum required step(s) to configure and permanently enable user and group disk quotas on the /xfs1 file system, which is currectly mounted.

  

  A. 5,7

  B. 3 only

  C. 4 only

  D. 1, 2

  E. 6, 8, 9, 1, 2

  F. 6, 7

  G. 6, 8, 9

  Correct Answer: A

• Question 57:

  You want to install the i686 version of OL5.9 on your OL6.5 x86_64 host to build some packages in the oder environment.

  Which create command line would you use?

  A. lxc-create –n OL5.9 –t oracle -- -u ftp://public-yum.oracle.com/OL5/9/base/i386

  B. lxc-create –n OL5.9 –arch=i386 –t oracle

  C. You cannot run an i686 container on an x86_64 host.

  D. lxc-create –n OL5.9 –t oracle -- -R 5.9 –arch i386

  Correct Answer: D

• Question 58:

  Which three statements are true about the configuration and use of Kerberos with Oracle Linux? (Choose three.)

  A. Lightweight Directory Access Protocol (LDAP) authentication supports Kerberos authentication.

  B. Logins that are authenticated by Kerberos must be performed while connected to the network.

  C. Network Information Service (NIS) authentication supports Kerberos authentication.

  D. Winbind authentication supports Kerberos authentication by using the Active Directory Server (ADS) security model.

  E. Winbind authentication supports Kerberos authentication by using the Domain security model.

  F. Kerberos tickets are issued by the kadmind process that is running on the admin servers in the Kerberos realm.

  Correct Answer: ACF

• Question 59:

  Your Oracle Linux system is frozen and you want to restart it cleanly by using magic SysRq keys. You were using a gnome desktop before the freeze.

  Examine this list of keys and functions:

  

  Which option represents the SysRq keys in the correct order that must be used to cleanly restart the system?

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

  B. 4, 2, 6, 3, 7, 1

  C. 4, 6, 8, 2, 3, 7, 5, 1

  D. 4, 8, 6, 2, 3, 7, 5, 1

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

  Correct Answer: E

  Reference: https://www.howtogeek.com/119127/use-the-magic-sysrq-key-on-linux-to-fix-frozen-x-serverscleanly-reboot-and-run-other-low-level-commands/

• Question 60:

  Consider a newly created general cgroup hierarchy, H1.

  Which two statements are true? (Choose two.)

  A. All tasks on the system are initially members of the root cgroup of cgroup hierarchy H1.

  B. A child task is always dependent on its parent and cannot be reassigned independently.

  C. A task on the system can be a member of multiple cgroups of cgroup hierarchy H1.

  D. A task on the system can be assigned to a different cgroup of cgroup hierarchy H1.

  E. A task on the system can be unassigned so that it is not a member of any cgroup.

  Correct Answer: AD