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Oracle Linux 8 Advanced System Administration Sample Questions (Q10-Q15):

NEW QUESTION # 10
Which two statements are true about control groups (cgroups) in Oracle Linux 8?

A. Oracle Linux 8 implements cgroups v2 by default.
B. Cgroups allow processes to be organized into hierarchical groups whose resource usage cannot be limited and monitored.
C. The cgroups filesystem allows limits to be overwritten in the lower levels of the hierarchy.
D. Different controllers from cgroups version 1 and cgroups version 2 cannot be used at the same time.
E. A cgroup is a collection of processes bound to a set of limits or parameters defined in the cgroups filesystem.

Answer: A,E

NEW QUESTION # 11
Which two default user account settings are contained in /etc/login.defs?

A. Group hashed passwords.
B. Decryption method used to decrypt passwords.
C. Encryption method used to encrypt passwords.
D. User hashed passwords.
E. Password aging controls.

Answer: C,E

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 # 12
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
/
bash-4.4# ls
bin lib64
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
/root
bash-4.4# ls
bash: ls: command not found
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: A

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 # 13
Which two statements are true about the Linux Auditing System?

A. Auditing rules can log administrator attempts to access user home directories.
B. Auditing system call rules can affect system performance depending on the amount of information that is logged.
C. Auditing can scan for Common Vulnerabilities and Exposures (CVE) and automatically apply needed patches to a system.
D. Auditing includes security policies, each of which includes security rules, or checks, which are checked when you run a security scan.
E. Auditing modes include permissive, enforcing, and disabled.

Answer: A,B

NEW QUESTION # 14
Which two statements are true about the Linux Auditing System?

A. Auditing rules can log administrator attempts to access user home directories.
B. Auditing system call rules can affect system performance depending on the amount of information that is logged.
C. Auditing can scan for Common Vulnerabilities and Exposures (CVE) and automatically apply needed patches to a system.
D. Auditing includes security policies, each of which includes security rules, or checks, which are checked when you run a security scan.
E. Auditing modes include permissive, enforcing, and disabled.

Answer: A,B

Explanation:
The Linux Auditing System can be configured to log various activities, including administrator attempts to access user home directories. Audit rules can be defined to monitor access to specific files or directories, and any access attempts will be logged in the audit logs.
Explanation of Answer B:Auditing system calls can generate a large amount of log data, which may affect system performance. The more detailed the audit rules, the greater the potential performance impact, as every event that matches a rule must be recorded.

NEW QUESTION # 15
......

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