2025 LINUX FINAL – TERMS QUESTIONS WITH VERIFIED ANSWERS ALREADY GRADED A+ BY EXPERTS

2025 LINUX FINAL – TERMS
QUESTIONS WITH VERIFIED
ANSWERS ALREADY GRADED A+
BY EXPERTS
False - CORRECT ANSWER>>>>Network latency issues are often
caused by SELinux or AppArmor restrictions. True or False?

monitoring - CORRECT ANSWER>>>>On which part of the
maintenance cycle do Linux administrators spend the most time?

False - CORRECT ANSWER>>>>The pam_tally2.so PAM can be used
to enforce complex passwords on a Linux system. True or False?

True - CORRECT ANSWER>>>>To set udev rules on a Linux system,
you must add the appropriate line to a file within the /etc/udev/rules.d
directory. True or False?

Lock the server in a server closet.
Ensure that SELinux or AppArmor is used to protect key services.
Use encryption for files and network traffic. - CORRECT
ANSWER>>>>What are best practices for securing a local Linux
server? (Choose all that apply.)

INPUT - CORRECT ANSWER>>>>What type of iptables chain targets
traffic that is destined for the local computer?

Take 50 swap statistics every 3 seconds. - CORRECT
ANSWER>>>>What will the command sar â "W 3 50 do?

Bad, because the processor is idle 10 percent of the time and perhaps a
faster CPU is required - CORRECT ANSWER>>>>When performing a


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,sar â "u command, you notice that %idle is consistently 10%. Is this
good or bad?

False - CORRECT ANSWER>>>>When the fsck command cannot
repair a non-root ( / ) filesystem, you should immediately restore all data
from backup. True or False?

ulimit - CORRECT ANSWER>>>>Which command can increase the
number of filehandles that programs can open in a shell?

/etc/sudoers - CORRECT ANSWER>>>>Which file contains
information regarding the users, computers, and commands used by the
sudo command?

ufw status - CORRECT ANSWER>>>>Which of the following UFW
commands can be used to view configured firewall rules?

Ensure that only necessary services are running. - CORRECT
ANSWER>>>>Which of the following actions should you first take to
secure your Linux computer against network attacks?

sar
free
vmstat - CORRECT ANSWER>>>>Which of the following commands
can be used to display memory statistics? (Choose all that apply.)

nmap - CORRECT ANSWER>>>>Which of the following commands
can be used to scan the available ports on computers within your
organization?

sa19 - CORRECT ANSWER>>>>Which of the following files is likely
to be found in the /var/log/sa directory on a Fedora system over time?




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,firewall-cmd --add-service ssh --permanent - CORRECT
ANSWER>>>>Which of the following firewalld commands can be used
to allow incoming SSH connections the next time the system is booted?

Delegate responsibility. - CORRECT ANSWER>>>>Which of the
following steps is not a common troubleshooting procedure?

LUKS
GPG - CORRECT ANSWER>>>>Which of the following technologies
can encrypt files stored on a filesystem within a Linux system? (Choose
all that apply.)

-Z - CORRECT ANSWER>>>>Which option can be added to the ls or
ps command to view the SELinux label?

su - CORRECT ANSWER>>>>Which of the following commands will
allow the root user to switch to another user account without having to
enter that user account's password?

/etc/sudoers - CORRECT ANSWER>>>>Where does the sudo
command check to determine a user's privileges when they attempt to
run the sudo command?

edquota -u jsmith - CORRECT ANSWER>>>>Which of the following
commands can be used to view the quota for a user?

nmap - CORRECT ANSWER>>>>Which of the following utilities can
be used by a system administrator to determine which services are
responding to network requests?

Users must use at least 3 characters as numbers in their passwords. -
CORRECT ANSWER>>>>When looking at the password-auth file on a
Fedora system, you notice part of the syntax that says dcredit=3. What is
the significance of this part of the configuration?

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, --use-agent - CORRECT ANSWER>>>>Which of the following options
for the gpg command will attempt to use the gpg agent and if it cannot
will ask for a passphrase?

ping - CORRECT ANSWER>>>>Which of the following commands
can be used to determine the round trip time that a packet takes to
traverse a network connection?

aa-trust - CORRECT ANSWER>>>>Which of the following is not a
valid Apparmor command?

vmstat - CORRECT ANSWER>>>>Which of the following utilities
will allow you to view information about virtual memory usage on a
Linux system?

tracepath
mtr
traceroute - CORRECT ANSWER>>>>When experiencing a network
issue, you want to determine where the source of the problem is. Which
of the three following commands can be used to determine whether there
is an issue with a router in the normal route that the packets are
attempting to take?

/etc/hosts.allow and /etc/hosts.deny - CORRECT ANSWER>>>>Which
of the following files does a TCP wrapper check before starting a
network daemon?

Encrypt for the user id given. - CORRECT ANSWER>>>>Which of the
following does the -r option for the gpg command specify?

/etc/nologin.txt - CORRECT ANSWER>>>>If someone tries to log into
a system using a daemon account, but the daemon account does not have
a valid shell assigned to it, they would normally see a standard warning.
If you want to customize the error, which of the following files can you
put a message in that will display upon an attempted login?
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