Oracle Oracle Certifications 1Z0-105 Questions & Answers

• Question 11:

  Examine the output of the kpartx command:

  

  The ./virtual_disk.ing file contaons an ext3 file system.

  Which command would you use to mount this file system on/mnt?

  A. mount /dev/loop0p1 /mnt

  B. mount /dev/mapper/loop0p1 /mnt

  C. mount –t ext3 /dev/mapper/loop0 /mnt

  D. mount –t ext3 /dev/loop0 /mnt

  Correct Answer: AC

• Question 12:

  You must configure DHCPD on a system with one interface to support only the clients that require a fixed address.

  What must you define in /etc/dhcp/dhcpd.conf to meet this requirement?

  A. one SUBNET definition, without a RANGE definition, and multiple HOST definitions

  B. one SUBNET definition, without a RANGE definition, and multiple HOST definitions

  C. only one SUBNET definition with a RANGE definition

  D. only one SUBNET definition without a RANGE definition

  Correct Answer: C

• Question 13:

  Examine the output of the command:

  

  Which two statements are true? (Choose two.)

  A. The names in the first column represent only cgroup subsystems that are currently attached to any cgroup hierarchy regardless of whether they are mounted or unmounted.

  B. cpuset, cpu, memory, cpuacct, and blkio are cgroup subsystems and they are attached to mounted cgroup hierarchies. The numbers in the second column represents the number of cgroups to which corresponding subsystems are attached.

  C. cpuset, cpu, memory, cpuacct, and blkio are cgroup subsystems and they are attached to mounted cgroup hierarchies. The numbers in the second column represents arbitrary system-assigned cgroup hierarchy numbers.

  D. cpuset, cpu, memory, cpuacct, and blkio are cgroup subsystems and they are attached to mounted cgroup hierarchies. The numbers in the second column represents the number of cgroups in each cgroup hierarchy.

  E. The names in the forst column represent all cgroup subsystems available on the system.

  Correct Answer: AC

• Question 14:

  Which two actions are Linux containers best suited to perform? (Choose two.)

  A. simplifying firewall setup

  B. creating a lightweight virtualization environment

  C. testing SELinux policy

  D. controlling the resource usage of a set of applications

  E. improving the performance of native applications

  Correct Answer: BC

  Reference: https://www.unixmen.com/docker-lightweight-virtualization-linux-containers/

• Question 15:

  Which two statements are true about the configuration and implementation of magic SysRq keys in Oracle Linux? (Choose two.)

  A. A value of 1 in the /proc/sysrq-trigger file enables magic SysRq keys.

  B. They are implemented as part of the Linux keyboard driver.

  C. A value of 1 in /proc/sys/kernel/sysrq enables all magic SysRq keys when entered by echoing values to the /proc/sysrq-trigger file.

  D. A value greater that in /proc/sys/kernel/sysrq disables all nagic SysRq keys when entered from a keyboard.

  E. A value of 1 in /proc/sys/kernel/sysrq enables all magic SysRq keys when entered from a keyboard.

  Correct Answer: AC

  Reference: https://sites.google.com/site/syscookbook/rhel/rhel-sysrq-key

• Question 16:

  Which statement is true about magic SysRq keys in Oracle Linux?

  A. They are disabled by default.

  B. They cannot be used from a graphical environment.

  C. It is a key combination that does not work if the system is hung.

  D. All SysRq keys are invoked in the same way from all terminals and the console.

  Correct Answer: A

  Reference: https://www.thegeekdiary.com/how-to-use-sysrq-tool-in-centos-rhel/

• Question 17:

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

  

  Which three statements would you use for mounting the file system in the /btrfs mount point? (Choose three.)

  A. mount /dev/sdd /btrfs

  B. mount UUID=7bfe3239-47ee-442b-b9f8-49f88b6b1be4 /btrfs

  C. mount LABEL=Btrfs /btrfs

  D. mount /btrfs /dev/sdc

  E. mount /dev/sd[c, d] /btrfs

  F. mount LABEL=7bfe3239-47ee-442b-b9f8-49f88b6b1be4 /btrfs

  Correct Answer: ACD

• Question 18:

  Which two statements are true about running Linux in a virtual machine? (Choose two.)

  A. Oracle does not support running Linux in a virtual machine with Citrix XenServer and Microsoft Hyper-

  V.

  B. Oracle supports running Linux in a virtual machine with Oracle VM Server for x86, Oracle VM VirtualBox, and KVM.

  C. Oracle certifies Oracle products to run on red Hat Xen or KVM virtual machine guests.

  D. Virtualization products offer integration services when running Linux as a virtual OS.

  Correct Answer: AB

• Question 19:

  Which three features are included in the btrfs file system? (Choose three.)

  A. general-purpose volume manager

  B. online defragmentation

  C. block devices mirroring

  D. cluster file system

  E. online resizing

  F. transparent compression

  Correct Answer: BEF

  Reference: https://docs.oracle.com/cd/E37670_01/E37355/html/ol_about_btrfs.html#

• Question 20:

  Examine the udev device naming rule:

  KERNEL=="hdb", NAME="disk1"

  Which statement is true?

  A. A disk device with a default kernel device name of /dev/hdb is accessible using the kernel device names /dev/disk1 and /dev/hdb.

  B. A disk device with a default kernel device name of /dev/hdb has an additional device special file name of /dev/disk1.

  C. A disk device with a default kernel device name of /dev/hdb is replaced with /dev/disk1. /dev/hdb does not exists.

  D. A disk device with the NAME attribute (from sysfs) matching with disk1 is accessible using the kernel device name /dev/hdb.

  Correct Answer: A