Oracle Oracle Certifications 1Z0-105 Questions & Answers

• Question 1:

  You want to add a new user inside a running container.

  Which command allows you to run the useradd command inside the container?

  A. nsexec –n -e “useradd ”

  B. nsenter –n --exec=useradd

  C. lxc-attach –n -- useradd

  D. run –n -- useradd

  Correct Answer: D

• Question 2:

  Which two must be provided on the Windows client when accessing Linux shares from Windows when using SAMBA on Oracle Linux? (Choose two.)

  A. a Windows password

  B. a Linux password

  C. a SAMBA password

  D. a SAMBA username

  E. a Linux username

  Correct Answer: BE

• Question 3:

  The sendmail package is already installed and running on a client system.

  Identify the minimum required steps to configure sendmail ro relay outbound emails to an SMTP server.

  1.

  Install the sendmail-cf package.

  2.

  Install the sendmail-devel package.

  3.

  Specify the SMTP server in /etc/mail/sendmail.mc in the SMART_HOST declaration section.

  4.

  Execute mail in /etc/mail.

  5.

  Restart mail services by using: service send mail restart.

  A. 2, 3, 5

  B. 1, 3, 5

  C. 2, 3

  D. 2, 3, 4, 5

  E. 1, 3

  F. 1, 2, 3, 5

  G. 1, 2, 3, 4, 5

  Correct Answer: A

• Question 4:

  Which three names represent subsystems or resource controlled for Control Groups? (Choose three.)

  A. devices

  B. freezer

  C. blkio

  D. acct

  E. cpu_share

  F. diskio

  Correct Answer: ABC

  Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/ resource_management_guide/ch01

• Question 5:

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

  

  Which two statements are true about system behavior regarding panics? (Choose two.)

  A. The kernel delays panic for a few seconds if a bug is encountered to allow the klogd kernel logging daemon to log the oops output.

  B. The kernel panics if a kernel thread sleeps in the TASK_UNINTERRUPTABLE state for more than 120 seconds.

  C. The kernel tries to kill some memory-consuming processes to avoid a panic if an out-of-memory condition arises.

  D. The kernel panics immediately if a bug is encountered.

  Correct Answer: BC

• Question 6:

  Consider the Dtrace providers made available in Oracle Linux.

  Which three providers are valid Oracle Linux Dtrace providers? (Choose three.)

  A. dtrace

  B. lockstat

  C. kernel

  D. syscall

  E. fbt

  F. io

  G. sysinfo

  Correct Answer: ABD

  Reference: https://docs.oracle.com/cd/E37670_01/E50705/html/ol_diffs_dtrace.html

• Question 7:

  Examine the file permissions and ACL on the OCP_questions.txt file: Which three commands, or command sequences, would you use to remove write permissions from all non-root users that currently have access to the OCP_questions.txt file? (Choose three.)

  

  A. setfac1 –m m:r OCP_questions.txt

  B. chmod 444 OCP_questions.txt

  C. setfac1 –m u::r,g::r,u:guest:r OCP_questions.txt

  D. setfac1 –m ug::r OCP_questions.txt

  E. setfac –m m:r OCP_questions.txt; chmod u=r OCP_questions.txt

  F. setfac –m ::r OCP_questions.txt

  Correct Answer: ABD

• Question 8:

  Which two statements are true about OCFS2 configuration? (Choose two.)

  A. A cluster layout configuration is requied to mount an OCFS2 file system on a nonclustered system.

  B. You can use the o2cb utility to create a cluster layout configuration.

  C. You can use a text editor to create the /etc/ocfs2/cluster.conf file.

  D. A cluster layout configuration is forbidden when mounting an OCFS2 file system on a non-clustered system.

  Correct Answer: AB

• Question 9:

  You have an unmounted btrfs file system:

  # btrfs filesystem show Label: `Btrfs' uuid: 7bfe3239-47ee-442b-b9f8-49f88b6b1be4 Total devices 3 FS bytes used 300.51MB devid 2 size 4.88GB used 1.06GB path /dev/sdd devid 1 size 4.88GB used 580.00GB path /dev/sdc devid 3 size 4.88GB used 1.50GB path /dev/sdb

  You have these mounted devices: # df –h

  Filesystem Size Used Avail Use% Mounted on

  /dev/mapper/vg_exam1-LogVol_system

  9.6G 3.3G 3.9G 46% /

  tmpfs 499M 0 499M 0% /dev/shm

  /dev/sda1 485M 77M 384M 17% /boot

  You have a mount point for the btrfs file system:

  # ls –all /btrfs

  total 0

  drwxr-xr-x. 1 root root 0 Aug 12 10:17 .

  dr-xr-xr-x. 1 root root 276 Aug 12 10:36 ..

  Which option represents the correct order to add a new device /dev/sdb to the btrfs file system and

  rebalance data blocks between all devices?

  1.

  btrfs device add /dev/sdb /btrfs

  2.

  btrfs device balance /dev/sdb

  3.

  btrfs filesystem balance /btrfs

  4.

  Manual rebalance is not needed. Btrfs will rebalance it automatically.

  5.

  btrfs device add /dev/sdd /dev/sdb

  6.

  mount LABEL=Btrfs /btrfs

  A. 6, 1, 3

  B. 5, 2

  C. 5, 4

  D. 6, 5, 3

  E. 6, 1, 4

  Correct Answer: D

• Question 10:

  Which statement is true about the configuration of udev?

  A. udev kernel device naming is based on default rules in /etc/udev/rules.d, which can be customized.

  B. udev kernel device naming is dynamic and based on hard-coded rules biult into the udev kernel module; these rules can be customized to yield persistent names by creating custom rules in the /etc/ sysconfig/udev file.

  C. udev kernel device naming is based on default rules in /etc/udev/rules.d and customizations in /var/lib/ udev/rules.d.

  D. udev kernel device naming is based on default rules, /lib/udev/rules.d, and customizations in /etc/udev/ rules.d.

  Correct Answer: D