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Oracle's Realistic 1z1-106 Exam Questions with Accurate Answers Prepare You for Success

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Oracle Linux 8 Advanced System Administration Sample Questions (Q19-Q24):

NEW QUESTION # 19
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. LOCAL_ENABLE is set to NO in /etc/vsftpd/vsftpd.conf.
B. The oracle user is listed in /etc/vsftpd/ftpusers.
C. The oracle user is listed in /etc/vsftpd/user_list and USERLIST_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 YES in /etc/vsftpd/vsftpd.conf.
E. The oracle user does not exist on host01.example.com.

Answer: B

NEW QUESTION # 20
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. #kern.* /dev/sssd/sssd.log
C. *.emerg *
D. *.info;mail.none;authpriv.none;cron.none /var/log/messages
E. cron.* /var/log/cron

Answer: A

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 # 21
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 is removed by typing exit at the bash shell prompt.
C. The command fails if the oraclelinux:8 -slim image does not exist on the local machine.
D. The container is created and started in a single command.
E. The container named oracleshell must already exist; otherwise, the command fails.

Answer: A,D

Explanation:
Understanding the Command:
$ podman run --name=oracleshell -it oraclelinux:8-slim
(Note: The image is likely oraclelinux:8-slim without a space.)
* podman run:Creates and starts a new container.
* --name=oracleshell:Assigns the name oracleshell to the container.
* -it:Runs the container in interactive mode with a pseudo-TTY.
* oraclelinux:8-slim:Specifies the image to use.
Option A: The container creates and starts an interactive shell.
* Explanation:
* The -it option runs the container interactively.
* If no command is specified, it executes the default command in the image (usually /bin/bash).
* This provides an interactive shell inside the container.
* Oracle Linux Reference:
* OracleLinux 8: Managing Containers-Running Containers Interactively:
"You can run a container in interactive mode using the -i and -t options together." Option D: The container is created and started in a single command.
* Explanation:
* The podman run command handles both creation and starting of the container.
* There's no need to create the container separately.
* Oracle Linux Reference:
* OracleLinux 8: Managing Containers-Creating and Running Containers:
"The podman run command creates and starts a container in one operation." Why Other Options Are Incorrect:
Option B:The container does not need to pre-exist; podman run creates it if it doesn't exist.
Option C:If the image doesn't exist locally, podman will attempt to pull it from the registry.
* Oracle Linux Reference:
* OracleLinux 8: Managing Containers-Pulling Images:
"If you attempt to run a container with an image that does not exist locally, Podman automatically pulls the image from a registry." Option E:The container is not removed upon exit unless the --rm option is used.
* Oracle Linux Reference:
* OracleLinux 8: Managing Containers-Automatically Removing Containers:
"Use the --rm option to automatically remove the container when it exits." Conclusion:
* Correct Options:A, D
* Summary:The command creates and starts a new container named oracleshell and opens an interactive shell session inside it.

NEW QUESTION # 22
Which two are true about using Ksplice?

A. Ksplice can be used without a network connection
B. It can patch the kernel without shutting down the system.
C. Ksplice has two clients; each can run in three different modes.
D. The Ksplice client is freely available to all customers.
E. Yum cannot upgrade a kernel patched by Ksplice

Answer: B,E

NEW QUESTION # 23
Which three statements are true about the journalctl command?

A. journalctl -p 6 shows all info log level messages and above.
B. journalctl -bl -p err fails if journal persistence is not configured.
C. journalctl -p err shows only error log level.
D. journalctl -k shows kernel logs since the last boot.
E. journalctl -p notice..warning shows all messages from notice to warning log level since the last boot.

Answer: A,C,D

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 # 24
......

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