Free Linux+ XK0-005 Ultimate Study Guide (Updated 285 Questions) [Q93-Q114]

NEW QUESTION 93
Which of the following is a function of a bootloader?

It initializes all the devices that are required to load the OS.

It mounts the root filesystem that is required to load the OS.

It helps to load the different kernels to initiate the OS startup process.

It triggers the start of all the system services.

NEW QUESTION 94
A Linux administrator is trying to start the database service on a Linux server but is not able to run it. The administrator executes a few commands and receives the following output:

Which of the following should the administrator run to resolve this issue? (Select two).

systemctl unmask mariadb

journalctl -g mariadb

dnf reinstall mariadb

systemctl start mariadb

chkconfig mariadb on

service mariadb reload

NEW QUESTION 95
A Linux administrator cloned an existing Linux server and built a new server from that clone. The administrator encountered the following error after booting the cloned server:

The administrator performed the commands listed below to further troubleshoot and mount the missing filesystem:

Which of the following should administrator use to resolve the device mismatch issue and mount the disk?

mount disk by device-id

fsck -A

mount disk by-label

mount disk by-blkid

NEW QUESTION 96
A systems administrator is troubleshooting connectivity issues and trying to find out why a Linux server is not able to reach other servers on the same subnet it is connected to. When listing link parameters, the following is presented:

Based on the output above, which of following is the MOST probable cause of the issue?

The address ac:00:11:22:33:cd is not a valid Ethernet address.

The Ethernet broadcast address should be ac:00:11:22:33:ff instead.

The network interface eth0 is using an old kernel module.

The network interface cable is not connected to a switch.

NEW QUESTION 97
A systems administrator is troubleshooting a connectivity issue pertaining to access to a system named db.example.com. The system IP address should be 192.168.20.88. The administrator issues the dig command and receives the following output:

The administrator runs grep db.example.com /etc/hosts and receives the following output:

Given this scenario, which of the following should the administrator do to address this issue?

Modify the /etc/hosts file and change the db.example.com entry to 192.168.20.89.

Modify the /etc/network file and change the db.example.com entry to 192.168.20.88.

Modify the /etc/network file and change the db.example.com entry to 192.168.20.89.

Modify the /etc/hosts file and change the db.example.com entry to 192.168.20.88.

NEW QUESTION 98
A Linux administrator needs to resolve a service that has failed to start. The administrator runs the following command:

The following output is returned

Which of the following is MOST likely the issue?

The service does not have permissions to read write the startupfile.

The service startupfile size cannot be 81k.

The service startupfile cannot be owned by root.

The service startupfile should not be owned by the root group.

NEW QUESTION 99
Users have been unable to reach www.comptia.org from a Linux server. A systems administrator is troubleshooting the issue and does the following:

Based on the information above, which of the following is causing the issue?

The name www.comptia.org does not point to a valid IP address.

The server 192.168.168.53 is unreachable.

No default route is set on the server.

The network interface eth0 is disconnected.

NEW QUESTION 100
A systems administrator configured firewall rules using firewalld. However, after the system is rebooted, the firewall rules are not present:

The systems administrator makes additional checks:

Which of the following is the reason the firewall rules are not active?

iptables is conflicting with firewalld.

The wrong system target is activated.

FIREWALL_ARGS has no value assigned.

The firewalld service is not enabled.

NEW QUESTION 101
A user is asking the systems administrator for assistance with writing a script to verify whether a file exists.
Given the following:

Which of the following commands should replace the <CONDITIONAL> string?

if [ -f “$filename” ]; then

if [ -d “$filename” ]; then

if [ -f “$filename” ] then

if [ -f “$filename” ]; while

NEW QUESTION 102
A systems administrator is investigating why one of the servers has stopped connecting to the internet.

Which of the following is causing the issue?

The DNS address has been commented out in the configuration file.

The search entry in the /etc/resolv.conf file is incorrect.

Wired connection 1 is offline.

No default route is defined.

NEW QUESTION 103
A systems administrator made some changes in the ~/.bashrc file and added an alias command. When the administrator tried to use the alias command, it did not work. Which of the following should be executed FIRST?

source ~/.bashrc

read ~/.bashrc

touch ~/.bashrc

echo ~/.bashrc

NEW QUESTION 104
Which of the following data structures is written in JSON?

NEW QUESTION 105
A systems administrator is notified that the mysqld process stopped unexpectedly. The systems administrator issues the following command:
sudo grep -i -r ‘out of memory’ /var/log
The output of the command shows the following:
kernel: Out of memory: Kill process 9112 (mysqld) score 511 or sacrifice child.
Which of the following commands should the systems administrator execute NEXT to troubleshoot this issue? (Select two).

free -h

nc -v 127.0.0.1 3306

renice -15 $( pidof mysql )

lsblk

killall -15

vmstat -a 1 4

NEW QUESTION 106
A user reported issues when trying to log in to a Linux server. The following outputs were received:

Given the outputs above. which of the following is the reason the user is unable to log in to the server?

User1 needs to set a long password.

User1 is in the incorrect group.

The user1 shell assignment incorrect.

The user1 password is expired.

NEW QUESTION 107
A systems administrator pressed Ctrl+Z after starting a program using the command line, and the shell prompt was presented. In order to go back to the program, which of the following commands can the administrator use?

fg

su

bg

ed

NEW QUESTION 108
A systems administrator has been tasked with disabling the nginx service from the environment to prevent it from being automatically and manually started. Which of the following commands will accomplish this task?

systemctl cancel nginx

systemctl disable nginx

systemctl mask nginx

systemctl stop nginx

NEW QUESTION 109
A Linux administrator cloned an existing Linux server and built a new server from that clone. The administrator encountered the following error after booting the cloned server:

The administrator performed the commands listed below to further troubleshoot and mount the missing filesystem:

Which of the following should administrator use to resolve the device mismatch issue and mount the disk?

mount disk by device-id

fsck -A

mount disk by-label

mount disk by-blkid

NEW QUESTION 110
After installing some RPM packages, a systems administrator discovers the last package that was installed was not needed. Which of the following commands can be used to remove the package?

dnf remove packagename

apt-get remove packagename

rpm -i packagename

apt remove packagename

NEW QUESTION 111
A Linux engineer receives reports that files created within a certain group are being modified by users who are not group members. The engineer wants to reconfigure the server so that only file owners and group members can modify new files by default. Which of the following commands would accomplish this task?

chmod 775

umask. 002

chactr -Rv

chown -cf

NEW QUESTION 112
A systems administrator has been unable to terminate a process. Which of the following should the administrator use to forcibly stop the process?

kill -1

kill -3

kill -15

kill -HUP

kill -TERM

NEW QUESTION 113
A User on a Linux workstation needs to remotely start an application on a Linux server and then forward the graphical display of that application back to the Linux workstation. Which of the following would enable the user to perform this action?

ssh -X user@server application

ssh -y user@server application

ssh user@server application

ssh -D user@server application

NEW QUESTION 114
The administrator comptia is not able to perform privileged functions on a newly deployed system. Given the following command outputs:

Which of the following is the reason that the administrator is unable to perform the assigned duties?