Download Latest CompTIA Linux+ Certification XK0-004 Real Dumps

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The latest CompTIA Linux+ Certification XK0-004 Real Dumps are new updated for your best preparation. With the complete collection of XK0-004 exam questions and answers, FreeTestShare has assembled to take you through CompTIA Linux+ Certification XK0-004 Real Dumps for your Exam preparation. In these CompTIA Linux+ XK0-004 dumps we have compiled real exam questions with their answers so that you can prepare and pass the CompTIA Linux+ Certification Exam in your first attempt.

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1. A systems administrator is enabling quotas on the /home directory of a Linux server. The administrator makes the appropriate edits to the /etc/fstab file and attempts to issue the commands to enable quotas on the desired directory. However, the administrator receives an error message stating the filesystem does not support quotas.

Which of the following commands should the administrator perform to proceed?

mount Co remount /home

quotacheck -cg

edquota /home

quotaon /home

2. 168.192.12 database01.comptia.org

3. A Linux administration is using a Linux system as a router. During the tests, the administrator discovers that IP packets are not being sent between the configured interfaces.

Which of the following commands enables this feature for IPv4 networks?

cat /proc/sys/net/ipv4/ip_route > 1

echo “1” > /proc/sys/net/ipv4/ip_forward

echo “1” > /proc/sys/net/ipv4/ip_route

echo “1” > /proc/sys/net/ipv4/ip_net

4. A Linux engineer is troubleshooting a newly added SCSI device for a Linux server that needed more disk space without rebooting. The engineer discovers that the new device is not visible by the Linux kernel in fdisk -l output.

Which of the following commands should be used to rescan the entire SCSI bus?

echo "- - -" > /sys/class/scsi_host/host0/scan

echo ' ' > /sys/class/scsi_host/host0/scan

echo "- - -" > /sys/scsi/scsi_host/host0/scan

echo "scan" > /sys/class/scsi_host/host0/scan

5. An administrator wants to use a Linux server’s GUI remotely but is limited by security to using TCP port 22.

Which of the following is the BEST choice for installation on the Linux server to enable this functionality?

X-forwarding

VNC

XRDP

6. A new packages repository named repo10 has been installed on mirror site. A Linux administrator wants to use this new repository for local package installations.

In which of the following locations should the administrator store the configuration information for the repo10 repository?

/etc/yum.reps.d/repo10.Repo

/etc/yum_repo.d/repo10

/etc/yum.reps.d/repo10

/etc/yum.conf

7. CORRECT TEXT

A junior system administrator had trouble installing and running an Apache web server on a Linux server. You have been tasked with installing the Apache web server on the Linux server and resolving the issue that prevented the junior administrator from running Apache.

INSTRUCTIONS

Install Apache and start the service. Verify that the Apache service is running with the defaults.

Typing “help” in the terminal will show a list of relevant commands.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

CentOS Command Prompt

8. A junior systems administrator is tasked with providing the network_administrators group the ability to

perform sudo without prompting for a password.

Which of the following steps should the administrator perform to accomplish this task? (Choose two.)

Use visudo to edit the /etc/sudoers file and add network_administrators to the “wheel” group

Use vi to edit the /etc/sudo file and add network_administrators to the “wheel” group

Provide all network_administrators with the “root” account password

Add the network_administrators ALL=(ALL) NOPASSWD: ALL directive to the /etc/sudoers file

Add the network_administrators =(ALL) NOEXEC: ALL directive to the /etc/sudoers file

9. A Linux administrator installed a new network adapter and temporarily disabled the network service from starting on boot.

The partial output of chkconfig is as follows:

Which of the following commands BEST describes how the administrator should re-enable the network service?

chkconfig --level 0 network on

chkconfig --level 0-6 network on

chkconfig --level 6 network on

chkconfig --level 12 network on

chkconfig --level 345 network on

10. Which of the following is the purpose of the vmlinux file on a Linux system?

To prevent a Linux kernel panic

To start a Linux virtual machine

To provide the executable kernel for the system

To enable resource access to the network

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11. A junior administrator is installing kernel modules.

The administrator is given a checklist that outlines the following tasks to be completed:

- Display currently installed module version.

- Display which modules loaded at startup.

Which of the following commands would be used to accomplish these tasks? (Choose two.)

cat /etc/issue

insmod

lsmod

rmmod

depmod

dmesg

12. A storage administrator in a virtualized environment has been told by a user that there is no space left on the volume to which the user can write. However, a check reveals that there is 20GB of unused space.

Which of the following explains the discrepancy?

The drive is not formatted

The drive is thin provisioned

The drive is thick provision eager zeroed

The drive space is overallocated

13. A systems administrator logs into a Linux server and must identify whether the server is a physical or virtual machine.

Which of the following commands should the administrator run?

vmstat

cat /proc/cpuinfo

dmidecode

modinfo

14. An administrator has modified the configuration file for a service. The service is still running but is not using the new configured values.

Which of the following will BEST remediate this issue?

kill -HUP

init 0

service start

renice -10

15. A systems administrator observes high latency values when reaching a remote web server.

Which of the following commands will help determine and isolate issues on the network side?

mtr

dig

netstat

route

16. A Linux administrator needs to prevent the Postfix mail transfer agent from starting on boot.

Which of the following commands will accomplish this task?

systemctl stop postfix.service

/etc/init.d/postfix stop

systemctl disable postfix.service

/etc/init.d/postfix disable

17. A Linux administrator has downloaded the network-tools-12.1-17.i386.rpm package for installation to a local system. The administrator issues the rpm -ivh nerwork-cools-12.1-17.i386.rpm command to install the package. After attempting to use the newly installed package, the administrator realizes the package for the system’s architecture was not installed correctly.

Which of the following commands should the administrator use to remove the package from the system?

rpm -e network-tools

rpm -U network-tools-12.1-17.i386.rpm

rpm -ivh network-tools-12.1-17.i686.rpm

rpm -r network-tools

18. A systems administrator is using a Linux laptop to troubleshoot network devices.

The administrator runs the following command:

# screen /dev/USB0

Which of the following does this command MOST likely accomplish?

It copies the network traffic from the device connected to USB0 and screens out rejected traffic.

It logs all troubleshooting output from the monitor to external USB0 storage.

It monitors USB0 waiting for a network device to be connected to it as an Ethernet device.

It allows the administrator to interact with the character device connected to USB0.

19. An administrator is reviewing suspicious activity on a server and needs to determine which users logged into the system within the past 24 hours.

Which of the following commands should the administrator run to determine this?

last

who

usermod

20. After cloning a remote repository, a new feature of that project needs to be developed and integrated into the next major release.

Which of the following is the first Git operation to run to begin working on this new feature immediately after the clone?

merge

init

diff

branch

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21. Joe, a user, reports there is data missing after a reboot of the system he is using. The data he was working on was located in /opt/data/user1.

A Linux administrator runs the following commands and receives the resulting output.

Which of the following should the administrator perform to resolve the issue?

The administrator can conclude Joe no longer has permissions to his data and needs to change the data ownership to Joe.

The administrator can conclude the data is gone from the system and needs to be restored from a backup.

The administrator can conclude Joe has been using the wrong folder and should be using /opt/data/ user2.

The administrator can conclude the drive is not mounted properly and should be remounted.

22. A Linux administrator is testing connectivity to a remote host on a shared terminal. The administrator wants to allow other users to access the terminal while the command is executing.

Which of the following commands should the administrator use?

bg ping remotehost

fg ping remotehost

ping remotehost < results

ping remotehost &

23. Which of the following is true about Type 2 hypervisors?

Type 2 hypervisors run on top of another general purpose O

Type 2 hypervisors are often called bare-metal or native hypervisors.

Type 2 hypervisors offer a performance increase to the guests in comparison to a Type 1 hypervisor.

Only Type 2 hypervisors allow direct access to CPU virtualization features.

24. A Linux administrator has configured a Linux system to be used as a router. The administrator confirms that two network adapters are properly installed and functioning correctly. In addition, the output of the iptables CL command appears to contain a complete firewall configuration.

Which of the following commands does the administrator need to issue for the router to be fully functional?

echo “1” > /proc/sys/net/ipv4/ip_forward

echo “0” > /proc/sys/net/ipv4/tcp_abort_on_overflow

echo “0” > /proc/sys/net/ipv4/max_connections

echo “1” > /proc/sys/net/ipv4/ip_default_ttl

25. A Linux user needs to create a file named newfile in the home directory that mirrors the contents of the /etc/resolv.conf file.

Which of the following commands would accomplish this task?

cat /etc/resolv.conf > /home/user/newfile

echo /etc/resolv.conf > /home/user/newfile

grep /etc/resolv.conf < /home/user/newfile

printf /etc/resolv.conf > /home/user/newfile

26. A user wants to configure the application “myapp” to start on runlevels 2, 3, 4, and 5 every time the system starts.

Which of the following commands will accomplish this task?

chkconfig --level 2345 myapp on

systemctl myapp on 2345

chkcinfig myapp --levels 2-5

systemctl --levels 2345 on

27. A user attempts to use the mount -a command but gets the following error:

mount: mount point /mnt/test does not exist

Which of the following commands best describes the action the Linux administrator should take NEXT?

mount Ca /mnt/test

mkdir Cp /mnt/test

mdadm Cp /mnt/test

mkfs /mnt/test

touch /mnt/test

28. A user wants to use terminal services from a Windows workstation to manage a Linux server.

Which of the following should be installed on the Linux server to enable this functionality?

VNC

rdesktop

SPICE

XRDP

29. An administrator needs to deploy 100 identical CentOS workstations via PXE boot.

Which of the following should the administrator use to minimize the amount of interaction with the consoles needed?

Kickstart script

Ghost image on a distribution server

Hard disk duplicator

Ubiquity script

30. Which of the following can be used to check the status of wireless devices that are connected to the system?

lsusb

iwconfig

netstat

ifconfig

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31. Which of the following default files are typically used to contain a list of public keys from other computers? (Choose two.)

~/.ssh/authorized_keys

~/.ssh/config

~/.ssh/id_dsa.pub

~/.ssh/known_hosts

~/.ssh/id_rsa

~/.ssh/id_rsa.pub

32. A Linux administrator is testing a new web application on a local laptop and consistently shows the following 403 errors in the laptop’s logs”

The web server starts properly, but an error is generated in the audit log.

Which of the following settings should be enabled to prevent this audit message?

httpd_can_network_connect = 1

httpd_enable_scripting = 1

httpd_enable_homedirs = 1

httpd_enable_cgi = 1

33. The following represents a partial listing of a user’s .bashrc file:

HISTSIZE=800

HISTFILESIZE=1000

umask 2002

HISTCONTROL=ignoreboth

When the user opens a terminal, an error message appears:

Octal number out of range

Which of the following lines in the partial .bashrc should be modified to prevent the error from occurring?

HISTSIZE=800

HISTFILESIZE=1000

umask 2002

HISTCONTROL=ignoreboth

34. A network administrator installed a web server on a Linux host and added a firevalid command to open port tcp/80. The web server worked without error until an updated and patch kernel was installed on the system a month later.

Now users are unable to access the web server even though the service is running, which of the following would fix the issue?

Use the firevalid command to open the HTTP application service rather than the port.

Change the firevalid zone t private and open port tcp/80.

Issue an additional firevalid command to open up port tcp/443 as well as port tcp/80.

Use the firevalid command to open tcp/80 both with and without the Cpermanent switch.

35. A systems administrator wants to install a new application that requires the newmod kernel module.

Which of the following commands should the systems administrator use?

lsof newmod

modinfo newmod

lsmod newmod

modprobe newmod

36. Which of the following is the MOST common method used to access Windows systems that are running in a cloud provider from a Linux system?

SSH

XRDP

VNC

37. An administrator is trying to optimize a connection to an off-site NFS server.

Which of the following commands would BEST display the problems with packet sizes between hops on the network?

tracepath

ping

tracert

nmap

38. After starting a long-running script, a systems administrator needs to verify the frequency of what is filling up the /var partition and kill it because it is consuming too much space.

Which of the following is the correct sequence given only a terminal is available?

1. CTRL-C2. bg3. watch df /var4. CTRL-C5. fg6. CTRL-Z

1. CTRL-C2. fg3. watch df /var4. CTRL-Z5. bg6. CTRL-Z

1. CTRL-Z2. bg3. watch df /var4. CTRL-C5. fg6. CTRL-C

1. CTRL-Z2. bg3. watch df /var4. CTRL-Z5. fg6. CTRL-C

39. An issue was discovered on a testing branch of a Git repository. A file was inadvertently modified and needs to be reverted to the master branch version.

Which of the following is the BEST option to resolve the issue?

git branch -b master file

git merge master testing

git stash branch master

git checkout master -- file

40. Which of the following can cause a kernel panic message after a system reboot?

Processor failure

PXE boot failure

USB device failure

Drive failure

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41. An administrator is utilizing an automation engine that engine that uses SSH to run command on remote systems.

Which of the following does this describe?

Inventory

Agentless architecture

Build automation

Version control

42. Ann, a junior Linux administrator, needs to copy software from her local machine to assist in developing a software application on a remote machine with the IP address 192.168.3.22. The file needs to be placed on the /tmp directory. After downloading the RPM to the local machine, which of the following commands would be BEST to use to copy the software?

scp ~/software.rpm [email protected]:/tmp

scp ~/software.rpm [email protected]: /tmp

wget [email protected]:/tmp -f ~/software.rpm

scp [email protected] ~/software.rpm :/tmp

43. A server is almost out of free memory and is becoming unresponsive.

Which of the following sets of commands will BEST mitigate the issue?

free, fack, partprobe

lsof, lvcreate, mdadm

df, du, rmmod

fdisk, mkswap, swapon -a

44. A new video card was added to a customer workstation. To get the new video card to work correctly, a systems administrator needs to remove support for the nouveau video driver on the Linux workstation.

Which of the following will accomplish this task?

Use rmmod -f nouveau.

Use modprobe -R nouveau.

Add blacklist nouveau to /etc/modprobe.d/blacklist.conf.

Add blacklist nouveau to /etc/modprobe.conf.

45. A Linux administrator built a GitLab server. Later that day, a software engineer tried to access the server to upload the repository during the final step of installation. The software engineer could not access the website.

Which of the following firewall rules would allow access to this site?

iptables CA INPUT Cp tcp Cm multiport --dports 80,443 Cm conntrack Ccstate NEW, ESTABLISHED Cj ACCEPT

iptables CA INPUT Cp tcp Cm multiport --dports 80,443 Cm conntrack Ccstate ESTABLISHED Cj ACCEPT

iptables CA INPUT Cp tcp Cm multiport --dports 80,443 Cm conntrack Ccstate RELATED, ESTABLISHED Cj ACCEPT

iptables CA INPUT Cp tcp Cm multiport --dports 80,443 Cm conntrack Ccstate NEW, ESTABLISHED Cj REJECT

46. A customer reports a Linux production server is randomly suffering degraded performance. The administrator verifies that the sysstat package is installed and enabled on the server.

Which of the following would BEST determine what is causing the impact on performance?

Create a cron job that runs uptime every 15 minutes to collect historical data of the load average of the system.

Leave a ping running overnight from a laptop to the server to catch any latency encountered.

Analyze the data in /var/log/sa using the sar command.

Open a screen session and run top inside of it. Let it run over night and collect the data.

47. A junior Linux administrator needs to access production servers using a secure SSH protocol.

Which of the following files should contain the public key to gain remote access to the server?

~/ssh/authorized-keys

/etc/authorized_keys

/etc/sshd/ssh.conf

~/.ssh/authorized_keys

48. A Linux administrator created a new log file in /var/log/newlog to monitor a newly installed application. The administrator is now configuring parameters of the file so it will be rotated on a weekly basis or when it becomes larger than 1MB in size. In addition, five rotations of the file should exist in the /var/log directory.

Which of the following should be added to the /etc/logrotate.conf file to meet this objective?

A)

Option A

Option B

Option C

Option D

49. A system administrator has deployed a Linux server based on an Anaconda process with all packages and custom configurations necessary to install a web server role.

Which of the following could be used to install more Linux servers with the same characteristics?

/etc/sysconfig/anaconda/cfg

/root/anaconda.auto

/root/anaconda-ks.cfg

/etc/sysconfig/installation.cfg

50. Ann, a Linux administrator, wants to edit a configuration management file. When she opens the file to edit, her text editor reports that the file has been opened in read-only mode. She then tries to edit the file as root by elevating via sudo and is still unable to save any changes. The error message in her text editor says that the read-only option is set on the file.

Ann checks the permissions on the file and sees the following:

-rw-rw-r-- 1 root wheel 30 Jun 13 15:38 infrastructure.yml

Which of the following commands is the BEST option to allow her to successfully modify the file?

chmod 600 infrastructure.yml

chown root: infrastructure.yml

chattr -i infrastructure.yml

chmod o+w infrastructure.yml

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51. A systems administrator configured a new kernel module, but it stopped working after reboot.

Which of the following will allow the systems administrator to check for module problems during server startup?

lsmod

modprobe

modinfo

dmesg

52. A systems administrator is configuring options on a newly installed Linux VM that will be deployed to the Pacific time zone.

Which of the following sets of commands should the administrator execute to accurately configure the correct time settings?

cd /etcln Cs /usr/share/zoneinfo/US/Pacific localtime

cd /usr/localln Cs /usr/share/zoneinfo/US/Pacific zoneinfo

cd /etc/localln Cs /usr/share/zoneinfo/US/Pacific localtime

cd /usr/share/localln Cs /usr/share/zoneinfo/US/Pacific localectl

53. A Linux administrator tried to copy files to a remote server but received an error message indicating a lack of free space on the disk. The administrator issued a df command and verified adequate free space and inodes on the filesystem.

Which of the following commands is the BEST way to diagnose the issue?

cat /proc/meminfo

lsof -nP | grep deleted

find / -type f -size +50M

du -a / | sort -n -r | head -n 30

54. A junior Linux administrator is trying to verify connectivity to the remote host host1 and display round-trip statistics for ten ICMP.

Which of the following commands should the administrator execute?

ping Cc 10 host1

traceroute Cc 10 host1

netstat host1

pathping Cc 10 host1

55. Which of the following will provide a list of all flash, external, internal, and SSD drives?

lspci

lsmod

lsblk

lsusb

56. A system administrator needs to bootstrap a series of Ubuntu images for a public provider. The administrator must ensure at the images contain the exact same updates, custom. Configure files after their first and then automatically.

Which of the following tools the administrator user?

Ansible

Docker

Cloud-init

Anaconda

57. Joe, a user, is unable to log in to the server and contracts the systems administrator to look into the issue.

The administrator examines the /etc/passwd file and discovers the following entry:

joe:x:505:505::/home/joe:/bin/false

Which of the following commands should the administrator execute to resolve the problem?

usermod Cs /bin/bash joe

passwd Cu joe

useradd Cs /bin/bash joe

chage CE -1 joe

58. A systems administrator clones copies of a Linux VM every time a new Linux server is needed. The administrator notices the command prompt always states localhost.localdomain.

Which of the following should the administrator run to have the command prompt consistently labeled as Server1 rather than localhost.localdomain?

host Server1

echo "127.0.0.1 Server1 Server1.localdomain" >> /etc/hosts

hostnamectl set-hostname "Server1" --pretty

hostnamectl set-hostname Server1 --transient

hostnamectl set-hostname Server1.localdomain --static

59. A junior administrator needs to unload an older video kernel module.

Which of the following commands would BEST accomplish this task?

modprobe

insmod

rmmod

chmod

60. A systems administration team has decided to their systems as immutable instances. They keep the desired state of each of their systems in version control and apply automation whenever they provision a new instance. If there is an issue with one of their servers, instead of troubleshooting the issue they terminate the instance and rebuild it using automation.

Which of the following is this an example of?

Inventory

Orchestration

Infrastructure as code

Agentless deployment

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61. An administrator is troubleshooting an application that has failed to start after the server was rebooted.

Noticing the data volume is not mounted, the administrator attempts to mount it and receives this error:

Upon checking the logical volume status, the administrator receives this information:

Which of the following can be said about the data logical volume, and how can this problem be resolved?

The logical volume is not active. The administrator should make it active with lvchange -ay /dev/ datavg/datalv and then mount it.

The logical volume file system has become corrupted. The administrator should repair it with xfs_repair/dev/datavg/datalv and then mount it.

The logical volume is OK but the /dev special files are missing. The administrator should recreate them by running /dev/MAKEDE

The file system is read-only. The administrator should remount it as read-write with the command mount - o remount.rw /data.

62. A Linux administrator suspects unauthorized users are attempting to log in to the Linux server remotely.

Which of the following should the administrator check FIRST?

/var/log/messages

/var/log/secure

/var/log/dmesg

/var/log/kern.log

63. A systems administrator receives a report that the web server is not running after a planned system reboot.

After starting the web server manually, which of the following commands should the administrator issue to ensure the web server starts at boot time?

systemctl service on

systemctl enable <name>.service

systemctl service enable

systemctl on <name>.service

64. Which of the following server roles is MOST appropriate to route files to multifunction devices?

Proxy

Router

Print server

Web server

65. An administrator needs to look at a log for an application on a systemd-based system. There is no log for this application in /var/log.

Which of the following is another way to view the application log on this system?

tail -f /var/log/secure

journalctl Cu application

systemctl application.service

watch /var/lib/application/

66. A systems administrator has finished building a new feature for the monitoring software in a separate Git branch.

Which of the following is the BEST method for adding the new feature to the software’s master branch?

Merge the changes from the feature branch to the master branch.

Save the changes to the master branch automatically with each Git commit.

Clone the feature branch into the master branch.

Pull the changes from the feature branch into the master branch.

67. A systems administrator needs to install software packages on a server from an Internet-based repository. The server does not have Internet connectivity.

Which of the following can be used to allow the server to connect to the Internet through the systems administrator’s desktop?

Local package repository

UUCP

Remote SSH port forwarding

X11 forwarding

68. When logging in, an administrator must use a temporary six-digit code that is displayed on a key fob.

Which of the following has been implemented?

Biometrics

HOTP

PKI

Software token

69. An administrator needs to see the type of CPU that a server is running.

Which of the following files contains this information?

/proc/cpuinfo

/etc/devices/info.conf

/dev/proc/cpu

/sys/dev/cpuinfo

70. A Linux server needs to be accessed, but the root password is not available.

Which of the following would BEST allow an administrator to regain access and set a new known password at the same time?

Boot into a single-user mode and reset the password via the passwd command.

Boot into a single-user mode and reset the password by editing the /etc/passwd file.

Boot into a single-user mode and reset the password by editing the /etc/shadow file.

Boot into a single-user mode and reset the password via the chage command.

Page 8 of 10

71. DRAG DROP

The lead Linux has added a disk, /dev/sdd, to a VM that is running out of disk space.

Place the following steps in the correct order from first (1) to last (4) to add the disk to the existing LVM.

72. A technician recently installed Linux on a desktop computer. The desktop has two graphics cards from two different vendors. One of the graphics cards works, but the other does not.

Which of the following commands should the technician use to start troubleshooting this issue?

Ismod

Vmstat

Gdm

startx

73. A Linux administrator must identify a user with high disk usage.

The administrator runs the # du Cs /home/* command and gets the following output:

Based on the output, User3 has the largest amount of disk space used. To clean up the file space, the administrator needs to find out more information about the specific files that are using the most disk space.

Which of the following commands will accomplish this task?

df Ck /home/User/files.txt

du Ca /home/User3/*

du Csh /home/User/

find . Cname /home/User3 -print

74. A user creates and installs a Linux VM on a local workstation. The VM can only connect to the local

workstation.

Which of the following BEST represents the default virtual network configuration in this instance?

Host-only

Bridged

NAT

Dual-homed

75. A Linux administrator opens a ticket to have an external hard drive mounted. As a security policy, external storage kernel modules are disabled.

Which of the following is the BEST command for adding the proper kernel module to enable external storage modules?

rmmod /lib/modules/3.6.12-100-generic/kernel/drivers/usb/storage/usb-storage.ko

modinfo /lib/modules/3.6.12-100-generic/kernel/drivers/usb/storage/usb-storage.ko

depmod /lib/modules/3.6.12-100-generic/kernel/drivers/usb/storage/usb-storage.ko

insmod /lib/modules/3.6.12-100-generic/kernel/drivers/usb/storage/usb-storage.ko

76. A junior systems is configuring localization option environment variables.

The administrator is given a checklist of tasks with the following requirements:

View current settings of the LC_ALL environment variable only.

Modify the LANG environment variable to US English Unicode.

Given this scenario, which of the following should be performed to meet these requirements? (Choose two.)

echo $LC_ALL

locale

cat $LC_ALL

export LANG = en_U

UTF-8

export $LANG = en_U

UTF

stty

77. A Linux administrator is using a public cloud provider to host servers for a company’s website. Using the provider’s tools, the administrator wrote a JSON file to define how to deploy the servers.

Which of the following techniques did the administrator use?

Infrastructure as code

Build automation

Platform as a service

Automated configuration

78. Given that a company’s policy states that users cannot install third-party tools on Window servers, which of the following protocols will allow a Linux GUI to connect to a Windows server?

VNC

RDP

X11

79. A Linux systems administrator is implementing Source Code Management for the web application server configuration files located in /etc/httpd/.

Which of the following steps should the administrator perform FIRST?

Clone the remote repository using ‘git clone’

Create a new repository using ‘git init’

Retrieve the remote changes using ‘git commit’

Configure the directory for git using ‘git config’

80. Which of the following boot methods can a Linux administrator use to boot a Linux server remotely via a network interface card instead of a local disk?

NTP

PXE

NFS

Kickstart

Page 9 of 10

81. A Linux systems administrator needs to set permissions on an application with the following parameters:

The owner of the application should be able to read, write, and execute the application.

Members of the group should be able to read and execute the application.

Everyone else should not have access to the application.

Which of the following commands would BEST accomplish these tasks?

chmod 710 <application name>

chmod 730 <application name>

chmod 750 <application name>

chmod 760 <application name>

82. A systems administrator wants to deploy several applications to the same server quickly. Each application should be abstracted from the host with its own dependencies and libraries and utilize a minimal footprint.

Which of the following would be BEST in this scenario?

Virtual machines

Type 2 hypervisor

Chroot jails

Containers

83. A Linux administrator needs to remotely update the contents of the www.comptia.org/contacts URL.

Which of the following commands would allow the administrator to download the current contents of the URL before updating?

curl www.comptia.org/contacts

dig www.comptia.org/contacts

apt-get www.comptia.org/contacts

yum list www.comptia.org/contacts

84. A Linux administrator wants to configure log messages of critical or higher severity levels from the cron utility to be logged to the console.

Which of the following will accomplish this objective?

Edit the /etc/logrotate.d/cron file to include the line cron.emerg.* /dev/console

Edit the /etc/rsyslog.conf file to include the line cron.emerg.* /dev/console

Edit the /etc/logrotate.conf file to include the line cron.emerg.* /dev/console

Edit the /etc/rsyslog.d/conf file to include the line cron.emerg.* /dev/console

85. An administrator receives a warning about a file system filling up, and then identifies a large file located at /tmp/largelogfile. The administrator deletes the file, but no space is recovered on the file system.

Which of the following commands would BEST assists the administrator in identifying the problem?

lsof | grep largelogfile

pkill /tmp/largelogfile

pgrep largelogfile

ps Cef | grep largelogfile

86. An administrator is logged on as an unprivileged user and needs to compile and installed an application from source.

Which of the following BEST represents how to complete this task?

cd <source>; sudo ./configure $$ make $$ make install

cd <source>; ./configure $$ sudo make $$ make install

cd <source>; ./configure $$ make $$ make install

87. A Linux systems administrator is troubleshooting an issue with the /home directory running out of space. The administrator needs to determine which /home directories are using the most space.

Which of the following commands should be used?

lvs

fsck

88. Which of the following servers provides encrypted tunnel SOCKS services?

SNMP

VPN

SSH

89. A Linux administrator is helping the security team troubleshoot an SELinux policy violation incident.

Which of the following would be the BEST utility command to display SELinux violation and AVC denial messages?

journalctl | grep sealert

sealert Ca /var/log/audit/audit.log

aureport | grep AVC

cat /var/log/messages | grep selinux

90. An administrator is reviewing updates in the master online Git repository and notices a file named .htaccess.

The file contains passwords and should only be in the administrator’s local repository, not the online one.

Which of the following would prevent this file from appearing online in the future?

git commit -m "File Update" -x .htaccess

sed -i 's/#Preserve Hidden=True/Preserve Hidden=True/g' .git/config

chown nobody:nodoby .htaccess

echo ".htaccess" >> .gitignore

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91. Which of the following would allow remote users to access a corporate server? (Choose two.)

VPN server

SMTP server

NTP server

SSH server

DHCP server

File server

92. A new user has been added to a Linux machine.

Which of the following directories would contain the user’s default files?

/etc/login.defs

/etc/passwd

/etc/skel

/etc/inittab

93. An administrator is adding an existing user named ‘’buddy’’ to the Apache group.

Which of the following should the administrator perform to accomplish this task?

sseradd Cg apache buddy

ssermod Cg apche buddy

sudo useradd Cg apache buddy

sudo usermod Cg apachebuddy