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NEW QUESTION # 26
Which are three of the network bonding modes supported in Oracle Linux 8?

• A. Active Backup
• B. Passive Backup
• C. Split Horizon
• D. Poison Reverse
• E. 802.3ad
• F. Round-robin
• G. Multicast

Answer: A,E,F

Explanation:
* Option B (Correct):Round-robin is a network bonding mode that distributes outgoing traffic evenly across all active network interfaces.
* Option D (Correct):802.3ad (LACP - Link Aggregation Control Protocol) is a bonding mode that allows dynamic aggregation of links conforming to the IEEE 802.3ad standard.
* Option F (Correct):Active Backup is a bonding mode where one interface is active while the other is in standby, providing redundancy.
* Options A, C, E, G (Incorrect):Multicast, Split Horizon, Poison Reverse, and Passive Backup are not valid bonding modes in Oracle Linux 8.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Network Bonding Guide

NEW QUESTION # 27
Which two statements are true about the proc and sys file systems?

• A. proc contains information about memory and CPUs.
• B. sys contains a list of running processes.
• C. sys contains information about memory and CPUs.
• D. sys contains a list of mounted devices.
• E. proc contains a list of network drivers.

Answer: A,C

Explanation:
* Option A (Correct):The/procfile system is a pseudo-file system that contains runtime system information (e.g., system memory, mounted devices, hardware configuration, etc.). Files such as/proc
/meminfoand/proc/cpuinfoprovide detailed information about memory and CPUs, respectively.
* Option C (Correct):The/sysfile system, also known as sysfs, provides a view of the kernel's device model. It contains information about system hardware, including CPUs and memory. For example,/sys
/devices/system/cpu/contains directories and files that provide detailed information about each CPU.
* Option B (Incorrect):The/sysfile system does not contain a list of running processes. Running processes are listed in the/procfile system, with each process having its own directory under/proc.
* Option D (Incorrect):/procdoes not contain a list of network drivers specifically. Network driver information is available under/proc/net, but this does not equate to a list of drivers.
* Option E (Incorrect):The/sysfile system does not contain a list of mounted devices. Mounted devices are listed in/proc/mountsor the/etc/mtabfile.
Oracle Linux Reference:For more details, see:
* OracleLinux 8: The/procand/sysFile Systems.

NEW QUESTION # 28
Examine this command:
# nft add rule inet filter input tcp dport 80 drop
Which two statements are true upon execution?

• A. TCP packets outbound on port 80 are dropped.
• B. The rule applies to the input table.
• C. The rule is applied to both IPv4 and IPv6 packets.
• D. The rule updates the configuration on disk.
• E. TCP packets inbound on port 80 are dropped.
• F. All traffic inbound on port 80 is dropped.

Answer: C,E

NEW QUESTION # 29
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. authpriv.* /var/log/auth
• B. cron.* /var/log/cron
• C. #kern.* /dev/sssd/sssd.log
• D. *.emerg *
• E. *.info;mail.none;authpriv.none;cron.none /var/log/messages

Answer: E

NEW QUESTION # 30
Which two directories store PAM authentication modules?

• A. /lib64/security
• B. /var/lib
• C. /lib/security
• D. /etc/pam.d
• E. /usr/lib

Answer: A,C

NEW QUESTION # 31
Examine the access privileges on this directory:
drwx------ 2 user1 test 4096 Nov 6 10:12 my_directory/
You must enable another user to read and navigate to my_directory. Which command will do this?

• A. setfacl --modify user:user2:r-- my_directory
• B. setfacl --default --modify user:user2:rw- my_directory
• C. setfacl --modify user:user2:r-x my_directory
• D. setfacl -x user:user2 my_directory
• E. setfacl --modify group:test:r-- my_directory

Answer: C

Explanation:
* Option D (Correct):The commandsetfacl --modify user:user2:r-x my_directorysets an Access Control List (ACL) entry that givesuser2read (r) and execute (x) permissions onmy_directory. The execute (x) permission is required to allow navigation into the directory.
* Option A (Incorrect):The--defaultoption would set the default ACL for future files or directories created withinmy_directory, not the directory itself.
* Option B (Incorrect):This option gives only read (r) permission, but without execute (x) permission, user2cannot navigate into the directory.
* Option C (Incorrect):The-xoption is used to remove an ACL entry, not modify it.
* Option E (Incorrect):This modifies the ACL for the grouptestinstead of the useruser2.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Using Access Control Lists

NEW QUESTION # 32
Which two statements are true about the at and batch commands?

• A. batch executes a task when the system load average is greater than 0.8.
• B. Both at and batch read from standard input, or you can specify a file and execute the commands with the -f option.
• C. batch schedules the execution of recurring tasks.
• D. at executes a one-time task to run at a specific time.
• E. at schedules the execution of recurring tasks.

Answer: B,D

Explanation:
Explanation of Answer C:Bothatandbatchcan accept commands from standard input or from a file specified using the-foption. This allows scheduling of tasks by providing the commands directly or reading them from a file.
Explanation of Answer E:Theatcommand schedules a one-time task to run at a specified time. It is used to execute commands once at a particular time in the future.

NEW QUESTION # 33
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. LOCAL_ENABLE is set to NO in /etc/vsftpd/vsftpd.conf.
• D. The oracle user is listed in /etc/vsftpd/user_list and USERLIST_ENABLE is set to NO in /etc/vsftpd
  /vsftpd.conf.
• E. The oracle user does not exist on host01.example.com.

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 # 34
Which two statements are true about the GRUB 2 bootloader?

• A. Its configuration file is /boot/grub2/grub2.conf on BIOS-based systems.
• B. It understands file systems and kernel executable formats, allowing the loading of operating systems without recording the on-disk physical location of the kernel.
• C. Its configuration can be changed by editing /etc/default/grub2 and executing grub2-mkconfig to regenerate grub2.cfg.
• D. It can load many free operating systems directly and chain-load proprietary operating systems.

Answer: B,D

Explanation:
GRUB 2 (GRand Unified Bootloader version 2) is a bootloader that is capable of loading a variety of free operating systems directly. It also supports chain-loading, which is the process of loading other bootloaders.
This feature allows it to boot proprietary operating systems, such as Windows, by passing control to their respective bootloaders. This flexibility makes GRUB 2 a popular choice for dual-boot or multi-boot configurations.
Explanation of Answer D:GRUB 2 has the capability to understand multiple file systems (like ext2/3/4, Btrfs, XFS, etc.) and kernel executable formats. This capability means GRUB 2 does not rely on the physical location of a kernel on the disk to load an operating system. Instead, it reads the file system to locate the kernel file. This feature adds flexibility and ease in managing boot entries and reduces the complexity involved in locating kernels manually.

NEW QUESTION # 35
Which two actions are performed by the logrotate utility?

• A. compressing log files
• B. duplicating log files
• C. encrypted log files
• D. rotating log files as specified
• E. hashing log files

Answer: A,D

NEW QUESTION # 36
Examine this command:
# auditctl -w /etc/passwd -p w -k pass
Which two statements are true upon execution?

• A. A write occurs to /etc/audit/rules.d/audit.rules.
• B. An audit rule is defined with the keyword pass.
• C. An audit rule is defined that creates a log entry every time /etc/passwd is read.
• D. An audit is defined that creates a log entry every time a write occurs to /etc/passwd.
• E. A write occurs to /etc/audit/audit.rules.

Answer: B,D

Explanation:
* Option C (Correct):The-k passpart of theauditctlcommand defines a keyword (pass) for the audit rule.
This keyword helps in filtering and searching logs in the audit trail.
* Option D (Correct):The-w /etc/passwd -p wpart of the command sets up a watch on the/etc/passwdfile for write (w) operations. This audit rule will generate a log entry every time there is a write operation to
/etc/passwd.
* Option A (Incorrect):This command does not write directly to/etc/audit/rules.d/audit.rules; it defines a rule in memory that could be saved to this file later.
* Option B (Incorrect):The rule only logs write (w) operations; it does not log read operations.
* Option E (Incorrect):The command does not directly cause a write to/etc/audit/audit.rules.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Auditing and System Logs
* man auditctlfor details on audit rules and options.

NEW QUESTION # 37
Examine these commands, which execute successfully:
# firewall-cmd --zone=public --add-service=cockpit --permanent
# firewall-cmd --zone=public --add-port=1313/tcp --permanent
# firewall-cmd --reload
Which are true upon execution?

• A. The Cockpit service is added only to the public zone.
• B. Runtime firewall configuration is not lost when the firewalld process is restarted or the system is rebooted.
• C. The custom Cockpit service configuration file is updated in /usr/lib/firewalld/services.
• D. Egress traffic is allowed for the Cockpit service only when using port 1313.
• E. Port 1313 blocks all traffic for the public zone except for ingress traffic to the Cockpit service.

Answer: A,B

Explanation:
Explanation of Answer A:The commandfirewall-cmd --zone=public --add-service=cockpit --permanentadds the Cockpit service to the public zone permanently. This means that the service is explicitly allowed only within the public zone, not in any other zones.
Explanation of Answer C:Using the--permanentflag withfirewall-cmdcommands ensures that the changes are stored in the firewalld configuration and are persistent across reboots. Therefore, when thefirewalldservice restarts or the system reboots, the runtime configuration will not be lost, and the changes will remain in effect.

NEW QUESTION # 38
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. Containers package an application with the individual runtime stack.
• C. A container application is dependent on the host operating system and kernel version.
• D. Podman requires a running daemon to function and to enable containers to start and run without root permissions.
• E. Podman, Buildah, and Skopeo are independent tools to create, run, and manage container applications across compatible Oracle Linux systems.

Answer: C,E

Explanation:
* Option B (Correct):Container applications are dependent on the host operating system's kernel because containers share the OS kernel, unlike virtual machines, which use a hypervisor. Compatibility of the host OS kernel version is required to run containers.
* Option D (Correct):Podman, Buildah, and Skopeo are container tools for managing container applications. Podman runs containers without requiring a daemon like Docker, Buildah is used to build container images, and Skopeo is used for transferring container images. These tools can operate independently of one another, providing a flexible and modular approach to container management on Oracle Linux.
* Option A (Incorrect):Container applications built on bare metal can run on virtual machines or cloud instances as long as the environment supports the container runtime.
* Option C (Incorrect):Containers do not package the entire runtime stack; they include the application and its dependencies but rely on the host OS for the kernel.
* Option E (Incorrect):Podman does not require a running daemon; one of its advantages over Docker is that it can run containers in rootless mode without needing a persistent daemon.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Podman and Containers Guide
* man podman,man buildah,man skopeofor further details on these tools.

NEW QUESTION # 39
Which mdadm command creates a RAID-1 device consisting of two block volumes and one spare device?

• A. mdadm -create /dev/md0 -level=1 -raid-devices=2 /dev/xvdd1 /dev/xvdd2
• 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=0 -raid-devices=2 /dev/xvdd1 /dev/xvdd2 -spare-devices=1 /dev/xvdd3
• D. mdadm -create /dev/md0 -level=5 -raid-devices=2 /dev/xvdd1 /dev/xvdd2 -spare-devices=1 /dev/xvdd3

Answer: B

NEW QUESTION # 40
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 -I -k mkdir
• B. ausearch --format text -k mkdir
• C. ausearch -sc 83 -k mkdir
• D. ausearch -a 83 -k mkdir
• E. ausearch -r -k mkdir

Answer: C

NEW QUESTION # 41
Examine the contents of the /etc/exports file on an NFS server:
/status *(rw,async)
/usr/shared/tools *(all-squash,anonuid=501,anongid=501,ro)
/projects/big *(ro) pteam(rw)
The NFS server exports /usr/shared/tools to NFS clients. Which statement is true?

• A. All clients can mount /usr/shared/tools read-only and NFS ignores the directives defined by the anonuid and anongid options.
• B. All clients can mount /usr/shared/tools read-only and NFS explicitly maps all requests to the UID and GID of the privileged local 501 user.
• C. All clients can mount /usr/shared/tools read-only and all-squash overrides explicit mapping of the UID and GID defined by anonuid and anongid.
• D. All clients can mount /usr/shared/tools read-only and NFS explicitly maps all requests to the UID and GID of the unprivileged local 501 user.
• E. All clients except those with a local 501 user can mount /usr/shared/tools read-only.

Answer: D

NEW QUESTION # 42
Which two statements are true about systemd system and service manager?

• A. The service command is used to start and stop system service units.
• B. systemd reads /etc/system to determine which services to start.
• C. systemd is backward-compatible with the System V init scripts that were used in earlier versions of Oracle Linux.
• D. systemd service units expose kernel devices and can be used to implement device-based activation.
• E. systemd is the first process that starts after the system boots and is the final process left running before the system shuts down.

Answer: C,E

Explanation:
Explanation of Answer B:systemdis the first process to start (PID 1) after the Linux kernel has booted and is responsible for initializing the user space and managing system services throughout the system's runtime. It is also the last process to stop during shutdown.
Explanation of Answer C:systemdmaintains backward compatibility with older System V init scripts. It can run and manage these scripts, ensuring legacy services are supported while providing newer functionalities through nativesystemdunit files.

NEW QUESTION # 43
Which three statements are true about DNF modules?

• A. Switching an enabled module stream automatically changes installed packages.
• B. Installing a module allows a user to select a specific stream.
• C. Packages exist in multiple streams, where each stream contains a different version.
• D. Streams are used to define optional configurations of modules.
• E. Streams cannot declare dependencies on the streams of other modules.
• F. Modules are a group of packages that are installed together along with dependencies.
• G. Profiles are used to provide alternate versions of the same module.

Answer: B,C,F

NEW QUESTION # 44
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