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Newly Released 1z1-106 Dumps for Professional Oracle Linux 8 System Administrator Certified
Obtaining the Oracle 1Z0-106 certification indicates that the administrator has extensive knowledge and experience in advanced system administration tasks in Oracle Linux 8 environments. It also offers opportunities for career advancements, higher salaries, and access to a vast network of Oracle certified professionals worldwide. Passing the exam demonstrates that an administrator has the expertise and confidence to handle intricate system administration tasks holistically.
The Exam is designed for professionals who already have experience working with Oracle Linux 8, such as system administrators, database administrators or network administrators. Candidates can use this opportunity to demonstrate their expertise and knowledge of the Oracle platform.
NEW QUESTION # 30
Which two statements are true about removing a physical volume (PV) from a volume group (VG)?
- A. It can be removed when an inactive logical volume is on the VG.
- B. It can be removed when it is part of an active VG.
- C. It can be removed only after removing it from its VG by using vgreduce.
- D. It can be removed when an active VG has mounted file systems by running vgexport.
- E. It cannot be removed when it is part of an active VG.
Answer: A,C
Explanation:
To remove a physical volume (PV) from a volume group (VG), it must first be removed using thevgreducecommand. This operation ensures that the VG no longer contains any references to the PV being removed.
Explanation of Answer D:A physical volume can be removed if there are no active logical volumes (LVs) on the VG that require space from that PV. If the LV is inactive, the PV can be safely removed from the VG.
NEW QUESTION # 31
Examine these commands and output:
# cat /etc/auto.master
/net -hosts
/- auto.direct ro
# cat /etc/auto.direct
/nfs1 host01:/export/share1
/nfs2 -sync host01:/export/share2
/nfs3 host02:/export/share3
Automounter must be used to mount these filesystems. Which mount options will it use?
- A. All three filesystems are mounted read-only, sync.
- B. All three filesystems are mounted read-write, sync.
- C. All three filesystems are mounted read-only, async.
- D. /nfs1 and /nfs3 are mounted read-only, async while /nfs2 is mounted read-only, sync.
- E. /nfs1 and /nfs3 are mounted read-only, async while /nfs2 is mounted read-write, sync.
Answer: D
NEW QUESTION # 32
Examine this command and output:
# cat deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx-deployment
spec:
selector:
matchLabels:
app: nginx
replicas: 2
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.14.2
ports:
- containerPort: 80
Now examine this command which executes successfully:
$ kubectl create -f deployment.yaml
Which two statements are true?
- A. The command creates a pod named nginx.
- B. The command creates a deployment named nginx.
- C. The command specifies port 80 as the port that the container exposes.
- D. The command creates and guarantees the availability of a specified number of identical pods.
- E. The command specifies nginx image version 1.14.2 and will fail if the image version is not available.
Answer: C,D
NEW QUESTION # 33
Which two statements are true about the proc and sys file systems?
- A. sys contains a list of running processes.
- B. sys contains information about memory and CPUs.
- C. proc contains a list of network drivers.
- D. proc contains information about memory and CPUs.
- E. sys contains a list of mounted devices.
Answer: B,D
NEW QUESTION # 34
Examine this command and output:
# ausearch -k mkdir
type=SYSCALL msg=audit(1604360199.719:44733): arch=c000003e syscall=83 success=no a0=55dec0b47400 a1=lc0 a2=0 a3=0 items=2 ppid=1354 pid=284632 auid=4294967295 uid=996 gid=996 euid=998 suid=998 fsuid=998 egid=996 sgid=996 fsgid=996 tty=(none) ses=429 comm="pkla-check-auth" exe="/usr/bin/pkla-check-authorization" subj=system_u:
system_r:policykit_auth_t:s0 key="mkdir"
Which command displays the syscall in text format instead of numerical format?
- A. ausearch -a 83 -k mkdir
- B. ausearch -sc 83 -k mkdir
- C. ausearch --format text -k mkdir
- D. ausearch -r -k mkdir
- E. ausearch -I -k mkdir
Answer: B,E
Explanation:
* Option B (Correct):The-Ior--interpretoption inausearchconverts the numerical system call numbers into their corresponding text names, making the output easier to understand.
* Option C (Correct):The-scoption specifies the system call by name (mkdir), which helps in finding audit logs related to that particular system call in text format.
* Option A, D, E (Incorrect):These options do not specifically translate the numeric system call numbers into human-readable text. OptionAfilters by the numeric ID,Dis an invalid option, andEreverses the search order but does not affect the format.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Auditing and System Logs
* man ausearchfor more details on audit search and interpretation commands.
NEW QUESTION # 35
Which statement is true about slice units?
- A. Processes in a slice unit are named at the same level as scopes and services.
- B. A slice unit is a concept for hierarchically managing resources in a group of processes.
- C. The system.slice contains all system services and user sessions.
- D. A slice unit accepts multiple names by the creation of additional symlinks to the unit file.
Answer: B
Explanation:
* Option A (Correct):A slice unit in systemd is a grouping mechanism used for hierarchical management of resources (such as CPU, memory, and I/O) among a group of processes.
* Options B, C, D (Incorrect):These options do not correctly describe the role or characteristics of slice units in Oracle Linux 8.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Managing Services with systemd
NEW QUESTION # 36
Which two directories store PAM authentication modules?
- A. /usr/lib
- B. /lib64/security
- C. /lib/security
- D. /var/lib
- E. /etc/pam.d
Answer: B,C
NEW QUESTION # 37
Which takes precedence for ssh program configuration?
- A. Command line
- B. /etc/ssh/ssh_config
- C. ~/.ssh/config
- D. /etc/ssh/sshd_config
Answer: A
Explanation:
Explanation of Answer C:When configuring SSH, the command-line options take the highest precedence.
Any configuration specified directly on the command line will override settings in user-specific (~/.ssh
/config) or system-wide configuration files (/etc/ssh/ssh_config).
NEW QUESTION # 38
Which two statements are true about kernel boot parameters?
- A. Parameters passed to the kernel from the GRUB 2 menu are persistent and apply to all subsequent reboots.
- B. Boot parameters are defined as values for the GRUB_CMDLINE_LINUX directive in the /etc/default/grub file.
- C. Each kernel version's boot parameters are stored in independent configuration files in /boot/loader/entries.
- D. Boot parameters defined as values for the GRUB_BOOT command-line interface are persistent and apply to all subsequent reboots.
Answer: B,C
NEW QUESTION # 39
Examine this content from /etc/chrony.conf:
...
pool pool.ntp.org offline
driftfile /var/lib/chrony/drift
keyfile /etc/chrony.keys
...
Which statement is true about pool.ntp.org?
- A. chronyd polls a maximum of 3 sources from pool.ntp.org after it is enabled.
- B. chronyd does not poll pool.ntp.org until it is enabled to do so by chronyc.
- C. chronyd takes pool.ntp.org offline automatically when sending a request to the pool fails.
- D. chronyd does not poll pool.ntp.org until it is enabled to do so by chronyd.
Answer: B
NEW QUESTION # 40
Examine this segment of /etc/rsyslog.conf:
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
#kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
*.info;mail.none;authpriv.none;cron.none /var/log/messages
# The authpriv file has restricted access.
authpriv.* /var/log/secure
# Log all the mail messages in one place.
mail.* -/var/log/maillog
# Log cron stuff
cron.* /var/log/cron
# Everybody gets emergency messages
*.emerg :omusrmsg:*
Now examine this log output:
less
Nov 9 20:32:16 server02 sudo[4570]: pam_unix(sudo:session): session opened for user opc (uid=0) Nov 9 20:32:17 server02 sudo[4570]: pam_unix(sudo:session): session closed Nov 9 20:32:24 server02 unix_chkpwd[4661]: password check failed for user Nov 9 20:32:24 server02 su[4581]: pam_unix(su:auth): authentication failed; logname= uid=1000 euid=0 tty=pts/0 ruser=opc rhost= user=root Which setting enabled the reporting of this log file output?
- A. cron.* /var/log/cron
- B. #kern.* /dev/sssd/sssd.log
- C. authpriv.* /var/log/auth
- D. *.emerg *
- E. *.info;mail.none;authpriv.none;cron.none /var/log/messages
Answer: C
Explanation:
* Option A (Correct):The configuration lineauthpriv.* /var/log/authwould direct all messages of theauthprivfacility (which includes sensitive authentication messages) to the/var/log/authfile. The log entries provided, which include authentication-related messages from PAM (pam_unix), would be logged due to this setting.
* Option B (Incorrect):The*.emerg *setting logs emergency messages to all users, not specifically the provided log output.
* Option C (Incorrect):This setting logs various non-authentication-related messages to/var/log
/messages. It specifically excludesauthpriv.
* Option D (Incorrect):This setting appears to be commented out and incorrect for the logging behavior described.
* Option E (Incorrect):Thecron.*setting logs cron messages, unrelated to the provided authentication logs.
Oracle Linux Reference:Refer to:
* OracleLinux 8: System Logging with rsyslog
NEW QUESTION # 41
Examine this network configuration:
NAME="ens4"
DEVICE="ens4"
ONBOOT=no
NETBOOT=yes
IPV6INIT=yes
BOOTPROTO=none
IPADDR=192.168.2.5
PREFIX=24
GATEWAY=192.168.2.1
TYPE=Ethernet
Which two statements are true after executing nmcli con mod ens4 ipv4.method auto?
- A. BOOTPROTO value is set to dhcp.
- B. IPADDR value is considered null.
- C. Interface ens4 automatically starts on boot.
- D. ONBOOT value is set to yes.
- E. ONBOOT value is set to dhcp.
- F. Interface ens4 is assigned an IP address of 192.168.2.5.
Answer: A,D
NEW QUESTION # 42
Which two statements are true about fdisk?
- A. It can divide logical devices into one or more block disks called partitions.
- B. fdisk -l displays disk size information for all disks.
- C. It understands GPT, MBR, and HFS partition tables.
- D. It cannot partition disks larger than 2 TB by using a GPT partition table.
- E. It can partition disks larger than 2 TB by using a GPT partition table.
Answer: B,E
NEW QUESTION # 43
Examine this command and output:
$ ftp host01.example.com
Connected to host01.example.com (192.168.40.131).
220 (vsFTPd 3.0.2)
Name (host01.example.com:oracle):
After entering a carriage return, this error message is displayed:
530 Permission denied
Login Failed
ftp>
Why is the oracle user denied access to the FTP server on host01.example.com?
- A. The oracle user is listed in /etc/vsftpd/user_list and USERLIST_ENABLE is set to YES in /etc/vsftpd
/vsftpd.conf. - B. The oracle user is listed in /etc/vsftpd/ftpusers.
- C. The oracle user does not exist on host01.example.com.
- D. The oracle user is listed in /etc/vsftpd/user_list and USERLIST_ENABLE is set to NO in /etc/vsftpd
/vsftpd.conf. - E. LOCAL_ENABLE is set to NO in /etc/vsftpd/vsftpd.conf.
Answer: A
Explanation:
The530 Permission deniederror indicates that the user is not allowed to log in. In vsFTPd, if theUSERLIST_ENABLEoption is set toYESin/etc/vsftpd/vsftpd.conf, and theoracleuser is listed in/etc/vsftpd
/user_list, that user is explicitly denied access to the FTP server.
NEW QUESTION # 44
Which mdadm command creates a RAID-1 device consisting of two block volumes and one spare device?
- A. mdadm -create /dev/md0 -level=0 -raid-devices=2 /dev/xvdd1 /dev/xvdd2 -spare-devices=1 /dev
/xvdd3 - B. mdadm -create /dev/md0 -level=1 -raid-devices=2 /dev/xvdd1 /dev/xvdd2 -spare-devices=1 /dev
/xvdd3 - C. mdadm -create /dev/md0 -level=1 -raid-devices=2 /dev/xvdd1 /dev/xvdd2
- D. mdadm -create /dev/md0 -level=5 -raid-devices=2 /dev/xvdd1 /dev/xvdd2 -spare-devices=1 /dev
/xvdd3
Answer: B
Explanation:
The correct command to create a RAID-1 device (mirroring) consisting of two block volumes with one spare device is optionC:mdadm -create /dev/md0 -level=1 -raid-devices=2 /dev/xvdd1 /dev/xvdd2 -spare- devices=1 /dev/xvdd3.
* RAID Level 1:RAID-1, also known as mirroring, involves creating an exact copy (or mirror) of a set of data on two or more disks. This ensures data redundancy; if one disk fails, the other can still provide the data.
* mdadm Command Structure:Themdadmcommand is used to manage and monitor RAID devices on Linux. To create a new RAID array, the--createoption is used, followed by several parameters:
* /dev/md0: The name of the RAID device to be created.
* --level=1: Specifies RAID level 1 (mirroring).
* --raid-devices=2: Indicates the number of active devices (two in this case) to be used in the RAID array.
* /dev/xvdd1 /dev/xvdd2: The two block devices that will form the RAID-1 array.
* --spare-devices=1 /dev/xvdd3: Specifies one spare device (/dev/xvdd3). A spare device is used to automatically replace a failed device in the RAID array.
* Option Analysis:
* A.Incorrect because it specifies RAID level 5 (--level=5), which requires at least three devices and does not match the requirement for RAID-1.
* B.Incorrect because it does not include the--spare-devices=1option, meaning there is no spare device included in this configuration.
* C.Correct as it specifies RAID-1 (--level=1), two active devices (--raid-devices=2), and one spare device (--spare-devices=1).
* D.Incorrect because it specifies RAID level 0 (--level=0), which is a striped set (no redundancy), not a mirrored set (RAID-1).
Oracle Linux Reference:For more detailed information aboutmdadmand RAID configurations in Oracle Linux
8, refer to the following Oracle Linux documentation:
* OracleLinux 8 Managing Storage Devices - RAID Configuration
* OracleLinux 8 mdadm Manual
These references provide comprehensive details on RAID levels,mdadmcommand syntax, and options for creating and managing RAID arrays in Oracle Linux.
NEW QUESTION # 45
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