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NEW QUESTION # 30
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 -r -k mkdir
- C. ausearch -a 83 -k mkdir
- D. ausearch -sc 83 -k mkdir
- E. ausearch --format text -k mkdir
Answer: A,D
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 # 31
Which two statements are true about naming network interfaces?
- A. Device names cannot be manually configured.
- B. Device names incorporate the physical location and hot plug slot index number.
- C. Consistent device naming is enabled by default.
- D. The udev device manager generates device names based on a series of schemes.
- E. The udev device manager uses a random number if all other schemes fail.
Answer: C,D
Explanation:
Explanation of Answer A:Consistent network device naming is enabled by default in Oracle Linux 8. This feature ensures that network interfaces retain their names across reboots, which is important for maintaining network configuration consistency. This is managed through the Predictable Network Interface Names feature, which is part of thesystemdproject and is implemented inudev.
Explanation of Answer B:Theudevdevice manager is responsible for dynamically managing device nodes in the/devdirectory. It generates network interface names based on several naming schemes, such as the interface's physical location on the bus (likeenp0s3), MAC address, or other attributes. These schemes are used to provide consistent and predictable names for network interfaces.
NEW QUESTION # 32
As root you configured a file system using AutoFS with default settings. In the first session, you changed to a directory under AutoFS control. In a second session, you changed to /etc. Now the idle time for the session expires. Which two statements are true about the status of the file system mounted in the first session?
- A. It remains mounted until you log out from the first session.
- B. It was unmounted from the first session when the timer expired.
- C. It was unmounted when the second session began.
- D. It remains mounted until you switch to a directory outside the current mount point.
- E. It remains mounted as long as the system is running.
Answer: A,D
Explanation:
Understanding AutoFS Behavior:
* AutoFSautomatically mounts file systems when accessed and unmounts them after a period of inactivity (default is 5 minutes).
* A file system remains mounted as long as it isactive, meaning processes are accessing files or directories within it.
Scenario Analysis:
* First Session:
* Changed to a directory under AutoFS control (mount point is active).
* Second Session:
* Changed to /etc (does not affect the first session).
* Idle Time Expires:
* AutoFS checks for idle mounts to unmount.
Implications:
* The mount point remainsactivebecause the shell in the first session is in the AutoFS directory.
* AutoFS willnotunmount the file system while it is active.
Oracle Linux Reference:
* OracleLinux 8: Configuring File Systems-Using the Automounter:
"A file system remains mounted as long as there are open files or directories within it." Correct Options:
* Option B:The file system remains mounted until you log out from the first session.
* Option E:The file system remains mounted until you switch to a directory outside the current mount point.
Why Other Options Are Incorrect:
* Option A:Incorrect because the mount does not persist indefinitely; it's unmounted when no longer active.
* Option C:Incorrect because the mount is still active; the timer does not cause unmounting in this case.
* Option D:Incorrect because the second session does not influence the mount status in the first session.
NEW QUESTION # 33
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 mounted devices.
- C. sys contains information about memory and CPUs.
- D. proc contains a list of network drivers.
- E. sys contains a list of running processes.
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 # 34
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. *.info;mail.none;authpriv.none;cron.none /var/log/messages
- C. *.emerg *
- D. authpriv.* /var/log/auth
- E. #kern.* /dev/sssd/sssd.log
Answer: D
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 # 35
Examine these commands executed by root:
# mkdir -p /jail /jail/bin /jail/lib64
# cp $(which bash) /jail/bin/
# ldd $(which bash)
linux-vdso.so.1 (0x00007ffd574f5000)
libtinfo.so.6 => /lib64/libtinfo.so.6 (0x00007fb458c2c000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fb458a28000)
libc.so.6 => /lib64/libc.so.6 (0x00007fb458666000)
/lib64/ld-linux-x86-64.so.2 (0x00007fb459177000)
# cp /lib64/libtinfo.so.6 /jail/lib64/
# cp /lib64/libdl.so.2 /jail/lib64/
# cp /lib64/libc.so.6 /jail/lib64/
# cp /lib64/ld-linux-x86-64.so.2 /jail/lib64/
# chroot /jail
What is the output from the cd, pwd, and ls commands?
- A. bash-4.4# cd
bash: cd: /root: No such file or directory
bash-4.4# pwd
/root
bash-4.4# ls
bash: ls: command not found - B. bash-4.4# cd
bash: cd: /root: Unable to access chrooted file or directory /root
bash-4.4# pwd
/
bash-4.4# ls
bin lib64 - C. bash-4.4# cd
bash: cd: /root: No such file or directory
bash-4.4# pwd
/
bash-4.4# ls
bin lib64 - D. bash-4.4# cd
bash: cd: command not found
bash-4.4# pwd
bash: pwd: command not found
bash-4.4# ls
bash: ls: command not found
Answer: C
Explanation:
Explanation of Answer A:When thechrootcommand is executed with/jail, the environment is changed to use
/jailas its new root directory. Inside this environment, only the directories and files copied into/jailare accessible. Since/jaildoes not contain a/rootdirectory, the commandcd(which defaults to changing to the user's home directory) will fail, displayingNo such file or directory. Thepwdcommand shows the root of the chroot environment (/), andlsdisplays the contents of/jail, which includesbinandlib64.
NEW QUESTION # 36
Examine this command:
# useradd -m -s /bin/bash alice
Which statement is true about the account?
- A. It is assigned a shell but without a password.
- B. It is assigned a home directory and a password.
- C. It is not assigned a home directory.
- D. It is a member of the wheel group.
Answer: A
NEW QUESTION # 37
Examine this command:
# ssh -L 5011:127.0.0.1:80 [email protected] -f sleep 30
Which two are true upon execution?
- A. A socket remains open for 30 minutes unless a connection is established.
- B. An SSH connection process is forked to the background.
- C. A local port forward is created between client and server.
- D. A reverse tunnel is created back to the local host on port 80.
- E. A web server is listening on port 5011.
Answer: B,C
NEW QUESTION # 38
Which two statements are true about the Oracle Linux 8 boot process?
- A. The bootloader loads the initramfs file into memory and extracts the vmlinuz file into a temporary file system (tmpfs).
- B. The bootloader loads the initramfs file into memory and extracts the vmlinuz file into the /boot file system.
- C. The kernel loads driver modules from vmlinuz that are required to access the root file system.
- D. The kernel loads driver modules from initramfs 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,D
NEW QUESTION # 39
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. Streams are used to define optional configurations of modules.
- D. Streams cannot declare dependencies on the streams of other modules.
- E. Profiles are used to provide alternate versions of the same module.
- F. Modules are a group of packages that are installed together along with dependencies.
- G. Packages exist in multiple streams, where each stream contains a different version.
Answer: B,F,G
NEW QUESTION # 40
Which two methods of changing kernel parameters can you use to modify values for the running system?
- A. Using the echo 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 /sys directory.
- C. Using the echo command to write values to specific files in the /proc/sys directory.
- D. Issuing the sysctl -w command to write values to specific files in the /proc/sys directory.
- E. Adding to or modifying parameters and values in the /etc/sysctl.conf file followed by issuing the sysctl -p command.
Answer: C,D
NEW QUESTION # 41
Which two default user account settings are contained in /etc/login.defs?
- A. Encryption method used to encrypt passwords.
- B. Decryption method used to decrypt passwords.
- C. Group hashed passwords.
- D. Password aging controls.
- E. User hashed passwords.
Answer: A,D
Explanation:
Explanation of Answer D:The/etc/login.defsfile in Oracle Linux contains configuration settings related to user account policies, including password aging controls. This includes settings such asPASS_MAX_DAYS, PASS_MIN_DAYS, andPASS_WARN_AGE, which define the maximum number of days a password is valid, the minimum number of days between password changes, and the number of days before password expiration to warn users, respectively.
Explanation of Answer E:The/etc/login.defsfile also contains settings for the encryption method used to encrypt user passwords. TheENCRYPT_METHODparameter specifies the hashing algorithm, such as SHA512, that is used to encrypt user passwords stored in/etc/shadow.
NEW QUESTION # 42
Which two components are used for creating a new rsyslog rule?
- A. module
- B. filter
- C. security policy
- D. parser
- E. action
Answer: B,E
Explanation:
* Option A (Correct):In rsyslog, afilteris used to determine which messages should be selected for further processing. Filters can be based on different criteria such as facility, severity, or specific message content.
* Option B (Correct):Anactionin rsyslog defines what to do with messages that match a filter. Actions can include writing to a log file, sending to a remote server, running a script, etc.
* Option C (Incorrect):A parser is not typically a component for creating a new rsyslog rule; it is involved in interpreting message formats.
* Option D (Incorrect):A module in rsyslog is a loadable component that provides additional capabilities, such as support for different protocols or output formats. It is not a direct component of a logging rule.
* Option E (Incorrect):Security policy is unrelated to the basic components used for defining rsyslog rules.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Configuring Rsyslog
NEW QUESTION # 43
Which two statements are true about the GRUB 2 bootloader?
- A. It can load many free operating systems directly and chain-load proprietary operating 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 file is /boot/grub2/grub2.conf on BIOS-based systems.
- D. Its configuration can be changed by editing /etc/default/grub2 and executing grub2-mkconfig to regenerate grub2.cfg.
Answer: A,B
NEW QUESTION # 44
Which three statements are true about the journalctl command?
- A. journalctl -bl -p err fails if journal persistence is not configured.
- B. journalctl -p notice..warning shows all messages from notice to warning log level since the last boot.
- C. journalctl -k shows kernel logs since the last boot.
- D. journalctl -p err shows only error log level.
- E. journalctl -p 6 shows all info log level messages and above.
Answer: C,D,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 # 45
Which two statements are true about systemd system and service manager?
- A. systemd reads /etc/system to determine which services to start.
- B. systemd is backward-compatible with the System V init scripts that were used in earlier versions of Oracle Linux.
- C. systemd service units expose kernel devices and can be used to implement device-based activation.
- D. The service command is used to start and stop system service units.
- 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
NEW QUESTION # 46
Examine this command:
# cryptsetup luksOpen /dev/xvdd1 cryptfs
What happens upon execution?
- A. It creates the /dev/mapper/xvdd1/cryptfs device mapping file.
- B. It creates the LUKS partition on /dev/xvdd1.
- C. It creates the /dev/mapper/xvdd1-cryptfs device mapping file.
- D. It creates the /dev/mapper/cryptfs device mapping file.
- E. It creates the /dev/mapper/xvdd1 device mapping file.
Answer: D
NEW QUESTION # 47
Which two statements are true about removing a physical volume (PV) from a volume group (VG)?
- A. It cannot be removed when it is part of an active VG.
- B. It can be removed only after removing it from its VG by using vgreduce.
- C. It can be removed when an active VG has mounted file systems by running vgexport.
- D. It can be removed when it is part of an active VG.
- E. It can be removed when an inactive logical volume is on the VG.
Answer: B,E
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 # 48
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 container named oracleshell must already exist; otherwise, the command fails.
- C. The container is created and started in a single command.
- D. The container is removed by typing exit at the bash shell prompt.
- E. The command fails if the oraclelinux:8 -slim image does not exist on the local machine.
Answer: A,C
NEW QUESTION # 49
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-only, async.
- C. /nfs1 and /nfs3 are mounted read-only, async while /nfs2 is mounted read-write, sync.
- D. All three filesystems are mounted read-write, sync.
- E. /nfs1 and /nfs3 are mounted read-only, async while /nfs2 is mounted read-only, sync.
Answer: E
Explanation:
Understanding the Automounter Configuration:
/etc/auto.master:
/net -hosts
/- auto.direct ro
* The /- auto.direct ro line indicates:
* Mount Point Prefix:/ (direct mounts)
* Map File:auto.direct
* Global Mount Options:ro (read-only)
/etc/auto.direct:
/nfs1 host01:/export/share1
/nfs2 -sync host01:/export/share2
/nfs3 host02:/export/share3
* /nfs1 and /nfs3:
* No specific mount options in auto.direct.
* Inherit the ro option from /etc/auto.master.
* /nfs2:
* Specifies -sync option in auto.direct.
* Inherits ro from /etc/auto.master.
* Mount options are ro,sync.
Mount Options Resolution:
* Global Options (ro) apply to all entries unless overridden.
* Per-Entry Options in auto.direct override or supplement global options.
Effective Mount Options:
* /nfs1:
* ro (from /etc/auto.master)
* Default NFS options (async unless sync is specified)
* /nfs2:
* ro (from /etc/auto.master)
* sync (specified in auto.direct)
* /nfs3:
* ro (from /etc/auto.master)
* Default NFS options (async)
Oracle Linux Reference:
* OracleLinux 8: Configuring File Systems-Automounter Configuration:
"Options specified in the master map apply to all entries in the map unless overridden by entries in the map itself."
* NFS Default Options:
"By default, NFS mounts are asynchronous (async) unless the sync option is specified." Conclusion:
* /nfs1 and /nfs3:Mounted with ro,async.
* /nfs2:Mounted with ro,sync.
* Correct Option:A
NEW QUESTION # 50
Examine this command and output:
# mdadm --detail /dev/md0
/dev/md0:
Version: 1.2
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. The RAID set read and write performance is currently sub-optimal.
- B. Only write performance is currently sub-optimal on this RAID set.
- C. A RAID device failed and has returned to normal operating status.
- D. A new RAID device was just added to replace a failed one.
- E. An extra device was added to this RAID set to increase its size.
Answer: A,D
Explanation:
* Option B (Correct):The output shows that the RAID array is in a "degraded, recovering" state, which means one of the devices failed, and the RAID is currently rebuilding with a spare device. When a RAID-5 array is in a degraded state, its read and write performance is reduced because it cannot utilize all disks in parallel, and data is being rebuilt.
* Option C (Correct):The output indicates that/dev/sdf1is marked as "spare rebuilding." This implies that a new spare device has been added to the RAID array to replace a previously failed device, and it is in the process of rebuilding to restore redundancy.
* Option A (Incorrect):The state of the RAID array is "degraded," which indicates that a RAID device is still being rebuilt. The failed device has not yet returned to normal operating status.
* Option D (Incorrect):No extra device was added to increase the RAID set's size. Instead, a spare device was added to replace a failed one.
* Option E (Incorrect):Both read and write performance are sub-optimal in a degraded RAID-5 state because data is being rebuilt using the remaining active devices.
Oracle Linux Reference:For more information, refer to:
* OracleLinux 8: Managing Storage Devices
* man mdadmfor details on managing RAID arrays.
NEW QUESTION # 51
Which two features does a user private group provide?
- A. Capability to prevent other users from modifying a file
- B. Ability for only a group's users to read files in a new directory
- C. Provision of a unique group.
- D. Capability to execute sudo
- E. Capability to create new group users
Answer: A,C
Explanation:
* Option A (Correct):A user private group (UPG) ensures that each user has their own unique group created with the same name and ID as the user.
* Option E (Correct):The UPG model helps prevent other users from modifying files by default, as newly created files are assigned to the user's unique group and not to a shared group.
* Option B (Incorrect):UPG does not give the capability to create new group users; this is related to group management commands.
* Option C (Incorrect):UPG does not providesudocapabilities;sudoconfiguration is managed separately.
* Option D (Incorrect):UPGs do not limit reading files to group users by default; it depends on specific file permissions.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Managing Users and Groups
NEW QUESTION # 52
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 takes pool.ntp.org offline automatically when sending a request to the pool fails.
- B. chronyd does not poll pool.ntp.org until it is enabled to do so by chronyc.
- C. chronyd does not poll pool.ntp.org until it is enabled to do so by chronyd.
- D. chronyd polls a maximum of 3 sources from pool.ntp.org after it is enabled.
Answer: B
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 # 53
Which takes precedence for ssh program configuration?
- A. /etc/ssh/ssh_config
- B. ~/.ssh/config
- C. Command line
- D. /etc/ssh/sshd_config
Answer: C
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 # 54
Examine this command:
# useradd -m -s /bin/bash alice
Which statement is true about the account?
- A. It is assigned a shell but without a password.
- B. It is assigned a home directory and a password.
- C. It is not assigned a home directory.
- D. It is a member of the wheel group.
Answer: A
Explanation:
* Option B (Correct):Theuseraddcommand with-mcreates a home directory for the user, and the-s /bin
/bashoption assigns the Bash shell. However, no password is set when the user is created withuseraddunless explicitly done with thepasswdcommand afterward.
* Option A (Incorrect):There is no mention of adding the user to thewheelgroup; theuseraddcommand does not imply this.
* Option C (Incorrect):The command does not automatically set a password; it only creates the user account with the specified shell.
* Option D (Incorrect):The-moption ensures that a home directory is created.
Oracle Linux Reference:Refer to:
* OracleLinux 8: Managing Users and Groups
NEW QUESTION # 55
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Fully Updated Free Actual Oracle 1Z0-106 Exam Questions: https://www.pass4guide.com/1Z0-106-exam-guide-torrent.html