ExamDiscuss 1z1-106 dumps & Professional Oracle Linux 8 System Administrator Sure Practice with 62 Questions
New 1z1-106 Exam Questions| Real 1z1-106 Dumps
Certification Topics of Oracle 1Z0-106 Exam?
Managing Linux Security
Understanding System Configuration options
Advanced Networking
Automating Tasks
Monitoring and Troubleshooting Linux
Managing the Network Configuration
Managing Pluggable Authentication Modules (PAM)
Oracle Ksplice
Oracle 1Z0-106 exam is a challenging test that requires a significant amount of preparation. Candidates are expected to have a solid understanding of Linux operating systems and be able to apply that knowledge to real-world scenarios. Oracle Linux 8 Advanced System Administration certification is ideal for IT professionals who are looking to advance their careers in Linux system administration and demonstrate their expertise to potential employers. With this certification, candidates will gain a competitive edge in the job market and be able to take on more advanced roles in their organizations.
NEW QUESTION # 27
Which two directories store PAM authentication modules?
- A. /lib/security
- B. /lib64/security
- C. /usr/lib
- D. /etc/pam.d
- E. /var/lib
Answer: A,B
NEW QUESTION # 28
The ss command was invoked with options to:
* limit output to all listening and non-listening TCP ports
* display ports instead of the protocols that typically use those ports
* display all available internal TCP information
* display only connections whose source or destination port is 80
Which two results are produced by the command?
- A. tcp CLOSE-WAIT 32 0 server.example.com:44732 12.21.0.15:https
- B. UNCONN 0 0 [::1]:323 [::]:*
- C. icmp6 UNCONN 0 0 *:58 *:*
- D. ESTAB 0 0 10.12.18.92:50384 169.254.169.254:80 cubic wscale:9,7 rto:201 rtt: 0.226/0.113 ato:40 mss:8948 pmtu:9000 rcvmss:1728 advmss:8948 cwnd:10 bytes_sent:142 bytes_acked:143 bytes_received:1728 segs_out:4 segs_in:3 data_segs_out:1 data_segs_in:1 send 3167433628bps lastsnd:
11351 lastrcv: 11351 lastack:11351 pacing_rate 6334867256bps delivery_rate 504112672bps delivered:
2 app_limited rcv_space:62720 rcv_ssthresh:56588 minrtt:0.142 - E. LISTEN 0 511 *:80 *:* cubic cwnd:10
Answer: D,E
Explanation:
Explanation of Answer C:Thesscommand can be used to display all available internal TCP information, including established connections with detailed TCP metrics, which matches the output in Answer C.
Explanation of Answer D:Thesscommand can display listening ports (TCP in this case) with details like congestion control algorithms (cubic), which aligns with Answer D. The output indicates a listening TCP socket on port 80.
NEW QUESTION # 29
Which three are features of the btrfs file system?
- A. Efficient storage for small files
- B. Online resizing
- C. General-purpose volume manager
- D. Cluster file system
- E. Block devices mirroring
- F. Copy-on-write metadata
- G. Automatic defragmentation
Answer: B,F,G
Explanation:
* Option B (Correct):Btrfs uses a copy-on-write mechanism for both data and metadata, which ensures that the file system is more resilient to crashes and data corruption.
* Option E (Correct):Btrfs supports online resizing, meaning that you can change the size of a mounted Btrfs file system without unmounting it.
* Option G (Correct):Btrfs automatically defragments files in the background to maintain performance.
* Option A (Incorrect):While Btrfs does support mirroring, it is not strictly block device mirroring in the traditional sense like RAID; it uses a different approach to redundancy.
* Option C (Incorrect):Btrfs is not a cluster file system; it is designed for local file systems.
* Option D (Incorrect):While Btrfs can store small files efficiently, it is not its primary design goal compared to other file systems optimized specifically for small files.
* Option F (Incorrect):Btrfs is a file system with integrated volume management capabilities but is not a general-purpose volume manager like LVM.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Btrfs File System
* man btrfsfor features and management.
NEW QUESTION # 30
Examine /etc/anacrontab:
SHELL=/bin/sh
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
# the maximal random delay added to the base delay of the jobs
RANDOM_DELAY=45
# the jobs are started during the following hours only
START_HOURS_RANGE=3-22
# period in days delay in minutes job-identifier command
1 5 dailyjob nice run-parts /etc/cron.daily
7 25 weeklyjob nice run-parts /etc/cron.weekly
@monthly 45 monthlyjob nice run-parts /etc/cron.monthly
Which two statements are true about the jobs scheduled in this file?
- A. Scripts run by the third job are delayed between 45 and 90 minutes.
- B. Jobs defined in this anacrontab file are randomly delayed by up to 51 minutes.
- C. Jobs defined in this anacrontab file can be executed between 15:00 and 22:00
- D. Scripts run by the first job are delayed between 11 and 45 minutes.
- E. Scripts run by the second job are delayed between 31 and 70 minutes.
Answer: A,C
Explanation:
Understanding the anacrontab Entries:
The /etc/anacrontab file contains the following variables and job definitions:
SHELL=/bin/sh
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
# the maximal random delay added to the base delay of the jobs
RANDOM_DELAY=45
# the jobs are started during the following hours only
START_HOURS_RANGE=3-22
# period in days delay in minutes job-identifier command
1 5 dailyjob nice run-parts /etc/cron.daily
7 25 weeklyjob nice run-parts /etc/cron.weekly
@monthly 45 monthlyjob nice run-parts /etc/cron.monthly
Variables Explained:
* RANDOM_DELAY=45
* Specifies that arandom delaybetween 0 and 45 minutes is added to the base delay of each job.
* START_HOURS_RANGE=3-22
* Jobs are allowed to start only between03:00 (3 AM)and22:00 (10 PM).
Job Delays Calculated:
* First Job (dailyjob):
* Base Delay:5 minutes
* Random Delay:0 to 45 minutes
* Total Delay:5 + (0 to 45) =5 to 50 minutes
* Second Job (weeklyjob):
* Base Delay:25 minutes
* Random Delay:0 to 45 minutes
* Total Delay:25 + (0 to 45) =25 to 70 minutes
* Third Job (monthlyjob):
* Base Delay:45 minutes
* Random Delay:0 to 45 minutes
* Total Delay:45 + (0 to 45) =45 to 90 minutes
Option B: Jobs defined in this anacrontab file can be executed between 15:00 and 22:00
* Explanation:
* The START_HOURS_RANGE=3-22 setting allows jobs to start between03:00 and 22:00.
* Therefore, it's true that jobscan be executed between 15:00 (3 PM) and 22:00 (10 PM).
* This statement is correct because the specified time range falls within the allowed start hours.
* Oracle Linux Reference:
* OracleLinux 8: Scheduling Tasks- Section on "Anacron Configuration Files":
"The START_HOURS_RANGE variable defines the time window during which Anacron jobs can run." Option C: Scripts run by the third job are delayed between 45 and 90 minutes.
* Explanation:
* The third job (monthlyjob) has abase delay of 45 minutes.
* With a RANDOM_DELAY of up to 45 minutes, thetotal delaybefore execution is between45 and 90 minutes.
* Therefore, this statement is accurate.
* Oracle Linux Reference:
* OracleLinux 8: Scheduling Tasks- Section on "Understanding Anacron Job Delays":
"Each job's delay is calculated by adding its defined delay to a random value between 0 and RANDOM_DELAY." Why Other Options Are Not Correct:
* Option A:Scripts run by the first job are delayed between 11 and 45 minutes.
* Explanation:
* The first job (dailyjob) has a total delay between5 and 50 minutes(5-minute base delay plus up to 45 minutes random delay).
* Therefore, the statement specifying11 to 45 minutesis incorrect.
* Option D:Jobs defined in this anacrontab file are randomly delayed by up to 51 minutes.
* Explanation:
* The maximum random delay is set by RANDOM_DELAY=45, so the random delay is up to45 minutes, not 51.
* Therefore, this statement is false.
* Option E:Scripts run by the second job are delayed between 31 and 70 minutes.
* Explanation:
* The second job (weeklyjob) has a total delay between25 and 70 minutes(25-minute base delay plus up to 45 minutes random delay).
* The statement specifies a delay between31 and 70 minutes, which is incorrect because the minimum delay is 25 minutes.
Conclusion:
Options B and C are correct based on the configuration specified in /etc/anacrontab. They accurately reflect the possible execution times and delays for the jobs defined.
NEW QUESTION # 31
Which two actions are performed by the logrotate utility?
- A. hashing log files
- B. encrypted log files
- C. compressing log files
- D. duplicating log files
- E. rotating log files as specified
Answer: C,E
Explanation:
Understanding logrotate:
* The logrotate utility manages log files by rotating, compressing, and removing them based on configuration.
* It helps prevent log files from consuming excessive disk space.
Option A: Rotating Log Files as Specified
* Explanation:
* logrotate rotates logs according to the specified criteria (size, time interval).
* Rotation involves renaming the current log file and starting a new one.
* Oracle Linux Reference:
* OracleLinux 8: Managing Log Files-Using logrotate:
"The logrotate utility simplifies the administration of log files by automatically rotating, compressing, and removing log files." Option C: Compressing Log Files
* Explanation:
* logrotate can compress old log files after rotation to save disk space.
* Compression is typically done using gzip.
* Oracle Linux Reference:
* OracleLinux 8: Managing Log Files-Configuring logrotate:
"You can configure logrotate to compress rotated log files by using the compress option."
NEW QUESTION # 32
Which is true about the /etc/sysconfig directory in an Oracle Linux 8 system?
- A. Files in this directory hierarchy contain information about running processes.
- B. Files in this directory hierarchy contain information about system hardware.
- C. It is used to access device and device driver information.
- D. Its contents depend on the packages installed on the system.
Answer: D
Explanation:
The/etc/sysconfigdirectory contains configuration files for various system services and applications. The content of this directory depends on which packages are installed on the system. Each package may provide one or more configuration files stored in/etc/sysconfigto control its behavior.
NEW QUESTION # 33
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-write, sync.
- B. All three filesystems are mounted read-only, async.
- C. /nfs1 and /nfs3 are mounted read-only, async while /nfs2 is mounted read-only, sync.
- D. All three filesystems are mounted read-only, sync.
- E. /nfs1 and /nfs3 are mounted read-only, async while /nfs2 is mounted read-write, sync.
Answer: C
NEW QUESTION # 34
Which two statements are true about the configuration and use of cron or anacron?
- A. All crontabs are held in the /etc/cron.d directory.
- B. The crond daemon looks for jobs only in /etc/crontab.
- C. anacron jobs are used to run cron jobs if the system was powered off when they were scheduled to run.
- D. cron jobs may run only once a minute.
- E. anacron jobs may run only once a day.
Answer: C,E
NEW QUESTION # 35
Which two statements are true about container technology?
- A. A container application built on a bare metal system cannot run on virtual machines or cloud instances.
- B. A container application is dependent on the host operating system and kernel version.
- C. Containers package an application with the individual runtime stack.
- D. Podman, Buildah, and Skopeo are independent tools to create, run, and manage container applications across compatible Oracle Linux systems.
- E. Podman requires a running daemon to function and to enable containers to start and run without root permissions.
Answer: C,D
NEW QUESTION # 36
Which three statements are true about DNF modules?
- A. Installing a module allows a user to select a specific stream.
- B. Modules are a group of packages that are installed together along with dependencies.
- C. Profiles are used to provide alternate versions of the same module.
- D. Switching an enabled module stream automatically changes installed packages.
- E. Streams are used to define optional configurations of modules.
- F. Packages exist in multiple streams, where each stream contains a different version.
- G. Streams cannot declare dependencies on the streams of other modules.
Answer: A,B,F
Explanation:
Understanding DNF Modules:
DNF modules in Oracle Linux 8 provide a way to offer different versions of software (packages) to users, allowing them to choose the version that best suits their needs. Modules help in managing multiple versions of software by grouping packages, defining streams, and using profiles for configurations.
Option A: Modules are a group of packages that are installed together along with dependencies.
* Explanation:
* Modulesare collections of packages that are grouped together to represent an application, language runtime, or any logical set.
* When you install a module, you are installing a set of packages along with their dependencies.
* This grouping ensures that all necessary components are installed for the software to function correctly.
* Oracle Linux Reference:
* OracleLinux 8: Managing Software-About Modules:
"A module is a group of packages that represents a component, such as an application, a language runtime, or a set of tools." Option B: Installing a module allows a user to select a specific stream.
* Explanation:
* Streamsin a module represent different versions of the software.
* When installing a module, you can select a specific stream to install the desired version.
* This allows users to choose between multiple versions of the same software provided within the module.
* Oracle Linux Reference:
* OracleLinux 8: Managing Software-About Module Streams:
"Each module can have one or more streams, which represent versions of the module content."
* Example Command:
# dnf module list nodejs
* This command lists available streams for the nodejs module.
Option F: Packages exist in multiple streams, where each stream contains a different version.
* Explanation:
* Within a module, each stream can contain different versions of the packages.
* This means the same package can exist in multiple streams but with different versions in each stream.
* This setup allows users to install the version of the software that meets their requirements.
* Oracle Linux Reference:
* OracleLinux 8: Managing Software-About Module Streams:
"Different streams can contain different versions of the software, allowing you to select the version that best suits your needs." Why Other Options Are Incorrect:
Option C: Profiles are used to provide alternate versions of the same module.
* Explanation:
* Profilesdefine sets of packages within a module stream for specific use cases or configurations, not alternate versions.
* Streams provide alternate versions, whereas profiles provide different package sets within a stream.
* Oracle Linux Reference:
* OracleLinux 8: Managing Software-About Module Profiles:
"A profile is a list of packages that defines a particular use case for a module stream." Option D: Streams are used to define optional configurations of modules.
* Explanation:
* Streams define different versions of software, not optional configurations.
* Optional configurations are managed through profiles within a stream.
* Oracle Linux Reference:
* Profiles handle configurations, while streams handle versions.
Option E: Streams cannot declare dependencies on the streams of other modules.
* Explanation:
* Streams can declare dependencies on specific streams of other modules.
* This allows modules to work together with compatible versions.
* Oracle Linux Reference:
* OracleLinux 8: Managing Software-Module Dependencies:
"Modules can declare dependencies on specific streams of other modules." Option G: Switching an enabled module stream automatically changes installed packages.
* Explanation:
* Switching streams does not automatically change installed packages.
* You must reset the module and install the new stream's packages manually.
* Oracle Linux Reference:
* OracleLinux 8: Managing Software-Switching Module Streams:
"To switch to a different module stream, you must reset the module and then install the packages from the new stream." Conclusion:
* Correct Options:A, B, F
* Summary:Modules group packages with dependencies, installing a module allows selecting a specific stream (version), and packages can exist in multiple streams with different versions.
NEW QUESTION # 37
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. ONBOOT value is set to yes.
- B. ONBOOT value is set to dhcp.
- C. Interface ens4 automatically starts on boot.
- D. IPADDR value is considered null.
- E. BOOTPROTO value is set to dhcp.
- F. Interface ens4 is assigned an IP address of 192.168.2.5.
Answer: D,E
Explanation:
Explanation of Answer B:When executingnmcli con mod ens4 ipv4.method auto, theipv4.methodparameter is set toauto, which configures the interface to obtain its IP address using DHCP. This means that theBOOTPROTOvalue in the configuration is set todhcp.
Explanation of Answer D:Whenipv4.methodis set toauto(DHCP), any static IP address specified inIPADDRis considered null because the interface will now obtain its IP address from a DHCP server, making the manually set IP address irrelevant.
NEW QUESTION # 38
Examine this command and output:
# mdadm --detail /dev/md0
/dev/md0:
Creation Time: Tue Oct 27 16:53:38 2020
Raid Level: raid5
Array Size: 207872 (203.03 MiB 212.86 MB)
Used Dev Size: 103936 (101.52 MiB 106.43 MB)
Raid Devices: 3
Total Devices: 3
Persistence : Superblock is persistent
Update Time: Tue Oct 27 16:53:38 2020
State: clean, degraded, recovering
Active Devices: 2
Working Devices: 3
Failed Devices: 0
Spare Devices: 1
Layout: left-symmetric
Chunk Size: 512K
Rebuild Status: 60% complete
Name: ol8.example.com:0 (local to host ol8.example.com)
UUID: 70f8bd2f:0505d92d:750a781e:c224508d
Events: 66
Number Major Minor RaidDevice State
0 8 49 0 active sync /dev/sdd1
1 8 65 1 active sync /dev/sde1
3 8 81 2 spare rebuilding /dev/sdf1
Which two are true?
- A. An extra device was added to this RAID set to increase its size.
- B. A new RAID device was just added to replace a failed one.
- C. The RAID set read and write performance is currently sub-optimal.
- D. A RAID device failed and has returned to normal operating status.
- E. Only write performance is currently sub-optimal on this RAID set.
Answer: B,C
NEW QUESTION # 39
Which command produces human-readable timestamps in kernel ring buffer messages?
- A. dmesg -t
- B. dmesg -x
- C. dmesg -W
- D. dmesg -T
Answer: D
NEW QUESTION # 40
Examine this command:
# useradd -m -s /bin/bash alice
Which statement is true about the account?
- A. It is a member of the wheel group.
- B. It is assigned a shell but without a password.
- C. It is not assigned a home directory.
- D. It is assigned a home directory and a password.
Answer: B
NEW QUESTION # 41
Which two statements are true about naming network interfaces?
- A. Device names incorporate the physical location and hot plug slot index number.
- B. Consistent device naming is enabled by default.
- C. Device names cannot be manually configured.
- D. The udev device manager uses a random number if all other schemes fail.
- E. The udev device manager generates device names based on a series of schemes.
Answer: B,E
NEW QUESTION # 42
Examine these Kubernetes components:
Which option correctly matches the components with their description?
- A. 1-d, 2-f, 3-e, 4-a, 5-c, 6-b
- B. 1-b, 2-a, 3-e, 4-c, 5-f, 6-d
- C. 1-c, 2-f, 3-d, 4-b, 5-e, 6-a
- D. 1-a, 2-d, 3-b, 4-c, 5-e, 6-f
- E. 1-d, 2-f, 3-c, 4-e, 5-a, 6-b
Answer: E
Explanation:
Explanation of Answer E:This option correctly matches the Kubernetes components with their descriptions:
* Kubectl- d. Command-line interface used to control Kubernetes
* Etcd- f. Stores configuration data relating to the cluster
* Kubelet- c. Agent that allows nodes to communicate with the API
* Kube-proxy- e. Performs networking functions and routes network traffic
* Kube-apiserver- a. Processes and validates requests and performs operations
* Kube-scheduler- b. Determines where containers should run based on resource availability
NEW QUESTION # 43
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 does not poll pool.ntp.org until it is enabled to do so by chronyc.
- B. chronyd polls a maximum of 3 sources from pool.ntp.org after it is enabled.
- 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: A
Explanation:
Explanation of Answer D:The entrypool pool.ntp.org offlinein the/etc/chrony.conffile specifies that thechronydservice should not automatically poll the NTP pool servers atpool.ntp.orguntil it is explicitly enabled by thechronyccommand. This setting is typically used in environments where the network is not always available (e.g., laptops or isolated systems) to avoid unnecessary polling.
NEW QUESTION # 44
Which two are true about using Ksplice?
- A. The Ksplice client is freely available to all customers.
- B. Ksplice can be used without a network connection
- C. It can patch the kernel without shutting down the system.
- D. Ksplice has two clients; each can run in three different modes.
- E. Yum cannot upgrade a kernel patched by Ksplice
Answer: C,E
NEW QUESTION # 45
Which two statements are true about the Oracle Linux 8 boot process?
- A. The kernel loads driver modules from initramfs that are required to access the root file system.
- B. The bootloader loads the initramfs file into memory and extracts the vmlinuz file into the /boot file system.
- C. The bootloader loads the initramfs file into memory and extracts the vmlinuz file into a temporary file system (tmpfs).
- D. The kernel loads driver modules from vmlinuz that are required to access the root file system.
- E. Both the vmlinuz file and the initramfs file are located in the /boot directory.
Answer: A,E
Explanation:
Explanation of Answer D:Theinitramfs(initial RAM filesystem) is a temporary filesystem loaded into memory during the boot process, containing essential drivers and utilities. The kernel usesinitramfsto load necessary drivers and modules required to access the root file system, particularly if it resides on a disk that requires special drivers.
Explanation of Answer E:Both thevmlinuz(the compressed Linux kernel image) and theinitramfsfile are located in the/bootdirectory. The bootloader, such as GRUB, reads these files from/bootto start the system.
NEW QUESTION # 46
Which three statements are true about the journalctl command?
- A. journalctl -k shows kernel logs since the last boot.
- B. journalctl -p 6 shows all info log level messages and above.
- C. journalctl -bl -p err fails if journal persistence is not configured.
- D. journalctl -p notice..warning shows all messages from notice to warning log level since the last boot.
- E. journalctl -p err shows only error log level.
Answer: A,B,E
Explanation:
Option B: journalctl -p err shows only error log level.
* Explanation:
* The -p or --priority option in journalctl filters messages by their priority level.
* When specifying asingle priority level, journalctl shows messagesonlyat that level.
* The priority levels, as per syslog standards, are:
* 0: emerg
* 1: alert
* 2: crit
* 3: err
* 4: warning
* 5: notice
* 6: info
* 7: debug
* Therefore, journalctl -p err displays messages with priorityerr (3)only.
* Oracle Linux Reference:
* OracleLinux 8: Managing Log Files- Section onFiltering Output withjournalctl:
"Use the -p option to display messages from the journal that have a specific priority level."
* Example:
# journalctl -p err
Option D: journalctl -k shows kernel logs since the last boot.
* Explanation:
* The -k or --dmesg option filters messages from the kernel, equivalent to the output of the dmesg command.
* This option implies -b, which limits the output to messages from the current boot.
* Therefore, journalctl -k displays kernel messages since the last boot.
* Oracle Linux Reference:
* OracleLinux 8: Managing Log Files- Section onViewing Kernel Messages:
"Use the journalctl -k command to display kernel messages since the last system boot."
* Example:
# journalctl -k
Option E: journalctl -p 6 shows all info log level messages and above.
* Explanation:
* When specifying a single numeric priority, journalctl displays messages withthat priority level and higher priority levels(i.e., lower severity).
* Priority levels are ordered from 0 (highest severity) to 7 (lowest severity).
* Therefore, journalctl -p 6 shows messages with priorities:
* 0 (emerg)
* 1 (alert)
* 2 (crit)
* 3 (err)
* 4 (warning)
* 5 (notice)
* 6 (info)
* This includesinfo level messages (6)and all higher priority messages.
* Oracle Linux Reference:
* OracleLinux 8: Managing Log Files- Section onFiltering Output with journalctl:
"When you specify a single priority level, journalctl shows messages at that level and higher severity."
* Example:
# journalctl -p 6
Why Other Options Are Not Correct:
* Option A:journalctl -bl -p err fails if journal persistence is not configured.
* Explanation:
* The -b option displays messages from the current boot. This works even if journal persistence isnotconfigured because the logs from the current boot are stored in volatile memory (/run/log/journal).
* Therefore, the command doesnot failif journal persistence is not configured.
* Oracle Linux Reference:
* OracleLinux 8: Managing Log Files- Section onJournal Volatility:
"By default, the journal stores logs in volatile memory and does not persist logs across reboots unless persistent storage is configured."
* Option C:journalctl -p notice..warning shows all messages from notice to warning log level since the last boot.
* Explanation:
* The -p option allows specifying arangeof priorities. However, the correct order for the range should be from thehigher priority (lower number)to thelower priority (higher number).
* Also, the priorities should be specified in the correct sequence, and ranges are inclusive.
* Moreover, journalctl by default shows messages from all boots unless limited by the -b option.
* Therefore, without -b, it does not limit messages to "since the last boot," making the statement incorrect.
* Correct Command:
* To display messages fromwarning (4)tonotice (5), the command should be:
# journalctl -p warning..notice -b
* But even then, the priorities need to be specified correctly, and the command in Option C is incorrect.
Conclusion:
OptionsB,D, andEare correct because they accurately describe the behavior of the journalctl command in filtering and displaying log messages based on priority levels and sources.
NEW QUESTION # 47
Examine this command:
$ podman run -name=oracleshell -it oraclelinux:8 -slim
Which two statements are true upon execution?
- A. The container creates and starts an interactive shell.
- B. The command fails if the oraclelinux:8 -slim image does not exist on the local machine.
- C. The container named oracleshell must already exist; otherwise, the command fails.
- D. The container is created and started in a single command.
- E. The container is removed by typing exit at the bash shell prompt.
Answer: A,D
NEW QUESTION # 48
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 -r -k mkdir
- B. ausearch --format text -k mkdir
- C. ausearch -I -k mkdir
- D. ausearch -sc 83 -k mkdir
- E. ausearch -a 83 -k mkdir
Answer: D
NEW QUESTION # 49
Examine these Kubernetes components:
Which option correctly matches the components with their description?
- A. 1-d, 2-f, 3-e, 4-a, 5-c, 6-b
- B. 1-b, 2-a, 3-e, 4-c, 5-f, 6-d
- C. 1-c, 2-f, 3-d, 4-b, 5-e, 6-a
- D. 1-a, 2-d, 3-b, 4-c, 5-e, 6-f
- E. 1-d, 2-f, 3-c, 4-e, 5-a, 6-b
Answer: E
NEW QUESTION # 50
Which two methods of changing kernel parameters can you use to modify values for the running system?
- A. Issuing the sysctl -w command to write values to specific files in the /sys directory.
- B. Issuing the sysctl -w command to write values to specific files in the /proc/sys directory.
- C. Using the echo command to write values to specific files in the /sys directory.
- D. Adding to or modifying parameters and values in the /etc/sysctl.conf file followed by issuing the sysctl - p command.
- E. Using the echo command to write values to specific files in the /proc/sys directory.
Answer: B,E
Explanation:
Explanation of Answer A:Thesysctl -wcommand is used to modify kernel parameters at runtime. It allows you to set the value of a specific parameter in the/proc/sysdirectory. For example,sysctl -w net.ipv4.
ip_forward=1will enable IP forwarding by writing the value directly to the corresponding file in/proc/sys.
Explanation of Answer B:Using theechocommand to write values directly to specific files in the/proc
/sysdirectory is another method to change kernel parameters dynamically for the running system. For instance, echo 1 > /proc/sys/net/ipv4/ip_forwardachieves the same effect as thesysctl -wcommand.
NEW QUESTION # 51
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