Question1: A cloud engineer needs to launch a container named web-01 in background mode. Which of the following commands will accomplish this task''
Question2: A systems administrator requires that all files that are created by the user named web have read-only permissions by the owner. Which of the following commands will satisfy this requirement?
Question3: A Linux administrator has logged in to a server for the first time and needs to know which services are allowed through the firewall. Which of the following options will return the results for which the administrator is looking?
Question4: A systems administrator wants to permit access temporarily to an application running on port 1234/TCP on a Linux server. Which of the following commands will permit this traffic?
Question5: An administrator accidentally installed the httpd RPM package along with several dependencies. Which of the following options is the best way for the administrator to revert the package installation?
Question6: 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?
Question7: A Linux administrator was notified that a virtual server has an I/O bottleneck. The Linux administrator analyzes the following output:
Given there is a single CPU in the sever, which of the following is causing the slowness?
Question8: A Linux administrator created a new file system. Which of the following files must be updated to ensure the filesystem mounts at boot time?
Question9: A Linux administrator is implementing a CI/CD process for the company's internal accounting web application. Which of the following best defines the purpose of this process?
Question10: A new hard drive /dev/sdd was added to a server. Which of the following commands will create a partition table with a single partition /dev/sdd1 that consumes the entire disk?
Question11: A junior administrator is trying to set up a passwordless SSH connection to one of the servers. The administrator follows the instructions and puts the key in the authorized_key file at the server, but the administrator is still asked to provide a password during the connection.
Given the following output:
Which of the following commands would resolve the issue and allow an SSH connection to be established without a password?
Question12: A systems administrator is receiving complaints about slow performance and system crashes. The administrator suspects memory and CPU issues. Which of the following is the first action the administrator should take to troubleshoot and resolve these issues?
Question13: A Linux user is trying to execute commands with sudo but is receiving the following error:
$ sudo visudo
>>> /etc/sudoers: syntax error near line 28 <<<
sudo: parse error in /etc/sudoers near line 28
sudo: no valid sudoers sources found, quitting
The following output is provided:
# grep root /etc/shadow
root :* LOCK *: 14600 ::::::
Which of the following actions will resolve this issue?
Question14: An administrator runs ping comptia.org. The result of the command is:
ping: comptia.org: Name or service not known
Which of the following files should the administrator verify?
Question15: A DevOps engineer wants to work on a snapshot of the infrastructure as code configuration. Which of the following commands should the engineer use to accomplish this task?
Question16: A Linux systems administrator needs to add additional code to code that resides within a repository without changing the original code. Once completed, the additional code will be merged into the main branch. Which of the following commands should the administrator use first?
Question17: A developer reported an incident involving the application configuration file /etc/httpd/conf/httpd.conf that is missing from the server. Which of the following identifies the RPM package that installed the configuration file?
Question18: A DevOps engineer is working on a local copy of a Git repository. The engineer would like to switch from the main branch to the staging branch but notices the staging branch does not exist. Which of the following Git commands should the engineer use to perform this task?
Question19: Which of the following commands will display the operating system?
Question20: Which of the following files holds the system configuration for journal when running systemd?
Question21: A developer is trying to install an application remotely that requires a graphical interface for installation. The developer requested assistance to set up the necessary environment variables along with X11 forwarding in SSH. Which of the following environment variables must be set in remote shell in order to launch the graphical interface?
Question22: An engineer needs to insert a character at the end of the current line in the vi text editor.
Which of the following will allow the engineer to complete this task?
Question23: A systems administrator is tasked with creating an Ansible playbook to automate the installation of patches on several Linux systems. In which of the following languages should the playbook be written?
Question24: An operations engineer is planning to start a container running a PostgreSQL database. The engineer wants the container to start automatically at system startup, mount the /home/db directory as /var/lib/postgresql inside the container, and expose port 5432 to the OS. Which of the following commands should the engineer run to achieve this task?
Question25: A Linux administrator wants to set the SUID of a file named dev_team.text with 744 access rights. Which of the following commands will achieve this goal?
Question26: A Linux administrator is configuring a log collector agent to monitor logs in /var/log/collector. The agent is reporting that it cannot write to the directory. The agent runs as the logger user account. The administrator runs a few commands and reviews the following output:
makefile
Output 1:
drwxr-xr-x. 1 root root 0 Oct 20:13 collector
Output 2:
file: /var/log/collector
owner: root
group: root
user::rwx
group::r-x
mask::rwx
other::r-x
Output 3:
uid=1010(logger) gid=1010(monitor) groups=1010(monitor)
Which of the following is the best way to resolve the issue?
Question27: Which of the following is the best tool for dynamic tuning of kernel parameters?
Question28: When trying to log in remotely to a server, a user receives the following message:
The server administrator is investigating the issue on the server and receives the following outputs:
Which of the following is causing the issue?
Question29: Users report that they cannot access some files located in the /opt/finapp directory after a power outage caused an unexpected server restart. A Linux administrator examines the following filesystem details and system logs:
# mount | grep finapp
/dev/mapper/rhel-opt_finapp on /opt/finapp type xfs (rw,relatime,seclabel,attr2,inode64,logbufs=8, logbsize=32k,noquota)
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 931.5G 0 disk
##sda1 8:1 0 1G 0 part /boot
##sda2 8:2 0 930.5G 0 part
##rhel-root 253:0 0 30.5G 0 lvm /
##rhel-opt_finapp 253:1 0 900G 0 lvm /opt/finapp
# grep opt_finapp /var/log/messages
XFS (opt_finapp): Corruption detected in inode 3645, extent tree
Which of the following commands should the administrator run in an attempt to fix the filesystem?
Question30: 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?
Question31: A Linux administrator is trying to remove the ACL from the file /home/user/data. txt but receives the following error message:
Given the following analysis:
Which of the following is causing the error message?
Question32: A Linux system is having issues. Given the following outputs:
# dig @192.168.2.2 mycomptiahost
; << >> DiG 9.9.4-RedHat-9.9.4-74.el7_6.1 << >> @192.168.2.2 mycomptiahost
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
# nc -v 192.168.2.2 53
Ncat: Version 7.70 ( https://nmap.org/ncat )
Ncat: Connection timed out.
# ping 192.168.2.2
PING 192.168.2.2 (192.168.2.2) 56(84) bytes of data.
64 bytes from 192.168.2.2: icmp_seq=1 ttl=117 time=4.94 ms
64 bytes from 192.168.2.2: icmp_seq=2 ttl=117 time=10.5 ms
Which of the following best describes this issue?
Question33: A systems administrator created a web server for the company and is required to add a tag for the API so end users can connect. Which of the following would the administrator do to complete this requirement?
Question34: 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?
Question35: A Linux administrator is tasked with creating resources using containerization. When deciding how to create this type of deployment, the administrator identifies some key features, including portability, high availability, and scalability in production. Which of the following should the Linux administrator choose for the new design?
Question36: A DevOps engineer pushed the updated configuration to an existing branch of a remote Git repository. Which of the following commands should the Linux administrator use to obtain these configuration changes?
Question37: A Linux administrator is troubleshooting an issue in which users are not able to access https://portal.comptia.
org from a specific workstation. The
administrator runs a few commands and receives the following output:
Which of the following tasks should the administrator perform to resolve this issue?
Question38: A systems administrator wants to list all local accounts in which the UID is greater than 500. Which of the following commands will give the correct output?
Question39: A Linux administrator modified the SSH configuration file. Which of the following commands should be used to apply the configuration changes?
Question40: An application developer received a file with the following content:
##This is a sample Image ##
FROM ubuntu:18.04
MAINTAINER [email protected]
COPY . /app
RUN make /app
CMD python /app/app.py
RUN apt-get update
RUN apt-get install -y nginx
CMD ["echo","Image created"]
The developer must use this information to create a test bed environment and identify the image (myimage) as the first version for testing a new application before moving it to production. Which of the following commands will accomplish this task?
Question41: A systems administrator needs to check if the service systemd-resolved.service is running without any errors.
Which of the following commands will show this information?
Question42: An administrator has source code and needs to rebuild a kernel module. Which of the following command sequences is most commonly used to rebuild this type of module?
Question43: After connecting to a remote host via SSH, an administrator attempts to run an application but receives the following error:
[user@workstation ~]$ ssh admin@srv1
Last login: Tue Mar 29 18:03:34 2022
[admin@srvl ~] $ /usr/local/bin/config_manager
Error: cannot open display:
[admin@srv1 ~] $
Which of the following should the administrator do to resolve this error?
Question44: Users report that connections to a MariaDB service are being closed unexpectedly. A systems administrator troubleshoots the issue and finds the following message in /var/log/messages:
Which of the following is causing the connection issue?
Question45: A Linux systems administrator is resolving a privileged access issue for users who are members of an admin group. Which of the following configuration files should the administrator update so the users in the admin group will have root privileged access to the Linux system?
Question46: Following the migration from a disaster recovery site, a systems administrator wants a server to require a user to change credentials at initial login. Which of the following commands should be used to ensure the aging attribute?
Question47: In order to copy data from another VLAN, a systems administrator wants to temporarily assign IP address
10.0.6 5/24 to the newly added network interface enp1s0f1. Which of the following commands should the administrator run to achieve the goal?
Question48: A systems administrator is configuring a Linux system so that network traffic from the internal network
172.17.0.0/16 going out through the eth0 interface would appear as if it was sent directly from this interface.
Which of the following commands will accomplish this task?
Question49: While troubleshooting server issues, a Linux systems administrator obtains the following output:
[rootGhost ~]# totalfree -m usedfreesharedbuf f/cache available
Mem:373635988824829
Swap:20471824223
Which of the following best describes the state of the system?
Question50: A Linux administrator was informed that the server time zone is incorrect. Which of the following commands should the administrator use to correct the time zone?
Question51: Developers have requested implementation of a persistent, static route on the application server. Packets sent over the interface eth0 to 10.0.213.5/32 should be routed via 10.0.5.1. Which of the following commands should the administrator run to achieve this goal?
Question52: An administrator started a long-running process in the foreground that needs to continue without interruption.
Which of the following keystrokes should the administrator use to continue running the process in the background?
Question53: A Linux systems administrator is troubleshooting an I/O latency on a single CPU server. The administrator runs a top command and receives the following output:
%Cpu(s): 0.2 us, 33.1 sy, 0.0 ni, 0.0 id, 52.4 wa, 0.0 hi, 0.2 si, 0.0 st Which of the following is correct based on the output received from the exe-cuted command?
Question54: One leg of an LVM-mirrored volume failed due to the underlying physical volume, and a systems administrator is troubleshooting the issue. The following output has been provided:
Given this scenario, which of the following should the administrator do to recover this volume?
Question55: An administrator would like to securely connect to a server and forward port 8080 on a local machine to port
80 on the server. Which of the following commands should the administrator use to satisfy both requirements?
Question56: A Linux administrator needs to create an image named sda.img from the sda disk and store it in the /tmp directory. Which of the following commands should be used to accomplish this task?
Question57: A systems administrator wants to be sure the sudo rules just added to /etc/sudoers are valid. Which of the following commands can be used for this task?
Question58: A Linux systems administrator is setting up a new web server and getting 404 - NOT FOUND errors while trying to access the web server pages from the browser. While working on the diagnosis of this issue, the Linux systems administrator executes the following commands:
Which of the following commands will BEST resolve this issue?
Question59: A diagnostic tool reports a "host seems down" event for a server with an IP address of 192.168.47.44. Which of the following commands should the administrator use to confirm the host down event?
Question60: The journald entries have filled a Linux machine's /var volume. Which of the following is the best command for a systems administrator to use to free up the disk space occupied by these entries?
Question61: A Linux administrator wants to prevent the httpd web service from being started both manually and automatically on a server. Which of the following should the administrator use to accomplish this task?
Question62: Which of the following tools is BEST suited to orchestrate a large number of containers across many different servers?
Question63: 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?
Question64: A systems administrator is tasked with preventing logins from accounts other than root, while the file /etc
/nologin exists. Which of the following PAM modules will accomplish this task?
Question65: A Linux administrator intends to start using KVM on a Linux server. Which of the following commands will allow the administrator to load the KVM module as well as any related dependencies?
Question66: A systems administrator is compiling a report containing information about processes that are listening on the network ports of a Linux server. Which of the following commands will allow the administrator to obtain the needed information?
Question67: A user is unable to log on to a Linux workstation. The systems administrator executes the following command:
cat /etc/shadow | grep user1
The command results in the following output:
user1 :! $6$QERgAsdvojadv4asdvaarC/9dj34GdafGVaregmkdsfa:18875:0:99999:7 :::
Which of the following should the systems administrator execute to fix the issue?
Question68: A Linux administrator needs to list the packages that are currently installed on a server. Which of the following commands should the administrator use?
Question69: A systems administrator needs to remove a disk from a Linux server. The disk size is 500G, and it is the only one that size on that machine. Which of the following commands can the administrator use to find the corresponding device name?
Question70: A network administrator issues the dig ww. comptia. org command and receives an NXDOMAIN response.
Which of the following files should the administrator check first?
Question71: A Linux administrator is creating a user that can run the FTP service but cannot log in to the system. The administrator sets /bin/false as a login shell for the user. When the user tries to run the FTP service, it is rejected with an "invalid shell: /bin/false" message. Which of the following is the best way to resolve the issue?
Question72: An administrator needs to increase the system priority of a process with PID 2274. Which of the following commands should the administrator use to accomplish this task?
Question73: A developer has been unable to remove a particular data folder that a team no longer uses. The developer escalated the issue to the systems administrator. The following output was received:
Which of the following commands can be used to resolve this issue?
Question74: A Linux systems administrator needs to compress a file named passwords.txt. The compressed file should be saved as passwords.txt.gz. Which of the following commands should the administrator use to accomplish this task?
Question75: 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?
Question76: A Linux engineer finds multiple failed login entries in the security log file for application users. The Linux engineer performs a security audit and discovers a security issue. Given the following:
# grep -iE '*www*|db' /etc/passwd
www-data:x:502:502:www-data:/var/www:/bin/bash
db:x: 505:505:db: /opt/db:/bin/bash
Which of the following commands would resolve the security issue?
Question77: A Linux engineer needs to block an incoming connection from the IP address 2.2.2.2 to a secure shell server and ensure the originating IP address receives a response that a firewall is blocking the connection. Which of the following commands can be used to accomplish this task?
Question78: A file called testfile has both uppercase and lowercase letters:
$ cat testfile
ABCDEfgH
IJKLmnoPQ
abcdefgH
ijklLMNopq
A Linux administrator is tasked with converting testfile into all uppercase and writing it to a new file with the name uppercase. Which of the following commands will achieve this task?
Question79: A Linux administrator has installed a web server, a database server, and a web application on a server. The web application should be active in order to render the web pages. After the administrator restarts the server, the website displays the following message in the browser: Error establishing a database connection. The Linux administrator reviews the following relevant output from the systemd init files:
The administrator needs to ensure that the database is available before the web application is started. Which of the following should the administrator add to the HTTP server .service file to accomplish this task?
Question80: Which of the following is a benefit of a service mesh?
Question81: A Linux administrator rebooted a server. Users then reported some of their files were missing. After doing some troubleshooting, the administrator found one of the filesystems was missing. The filesystem was not listed in /etc/f stab and might have been mounted manually by someone prior to reboot. Which of the following would prevent this issue from reoccurring in the future?
Question82: A Linux administrator would like to measure possible packet loss between a workstation and a remote web application that is running on port 443. Which of the following would be the best command for the administrator to use to display this information?
Question83: Based on an organization's new cybersecurity policies, an administrator has been instructed to ensure that, by default, all new users and groups that are created fall within the specified values below.
To which of the following configuration files will the required changes need to be made?
Question84: A security analyst is monitoring the network to identify latency or slowdowns during a vulnerability scan.
Which of the following functions will best achieve this?
bash
function x() {
info=$(ping -c 1 $1 | awk -F "/" 'END {print $5}')
echo "$1 | $info"
}
Question85: A Linux administrator needs to expand a volume group using a new disk. Which of the following options presents the correct sequence of commands to accomplish the task?
Question86: A systems administrator is adding a Linux-based server and removing a Windows-based server from a cloud- based environment. The changes need to be validated before they are applied to the cloud-based environment.
Which of the following tools should be used to meet this requirement?
Question87: A systems administrator is working on an SFTP server configuration. Which of the following commands will best enable the connectivity to that service from the 10.10.0.0/24 network?
Question88: A Linux administrator recently downloaded a software package that is currently in a compressed file. Which of the following commands will extract the files?
Question89: Which of the following paths stores the configuration files in a Linux filesystem?
Question90: A developer needs to launch an Nginx image container, name it Web001, and ex-pose port 8080 externally while mapping to port 80 inside the container. Which of the following commands will accomplish this task?
Question91: Which of the following commands is used to configure the default permissions for new files?
Question92: A Linux administrator needs to create a symlink for /usr/local/bin/app-a, which was installed in /usr/local
/share/app-a. Which of the following commands should the administrator use?
Question93: Which of the following commands should a technician use to create an administrative account for the username Joe?
Question94: A cloud engineer needs to remove all dangling images and delete all the images that do not have an associated container. Which of the following commands will help to accomplish this task?
Question95: A DevOps engineer is working on a local copy of a Git repository. The engineer would like to switch from the main branch to the staging branch but notices the staging branch does not exist. Which of the following Git commands should the engineer use to perform this task?
Question96: A user is unable to remotely log on to a server using the server name server1 and port 22. The Linux engineer troubleshoots the issue and gathers the following information:
Which of the following is most likely causing the issue?
Question97: A user created the following script file:
# ! /bin/bash
# FILENAME: /home/user/ script . sh
echo "hello world"
exit 1
However, when the user tried to run the script file using the command "script . sh, an error returned indicating permission was denied. Which of the follow-ing should the user execute in order for the script to run properly?
Question98: An administrator recently updated the BIND software package and would like to review the default configuration that shipped with this version. Which of the following files should the administrator review?
Question99: Ann, a security administrator, is performing home directory audits on a Linux server. Ann issues the su Joe command and then issues the Is command. The output displays files that reside in Ann's home directory instead of Joe's. Which of the following represents the command Ann should have issued in order to list Joe's files?
Question100: A junior administrator is setting up a new Linux server that is intended to be used as a router at a remote site.
Which of the following parameters will accomplish this goal?
Question101: A Linux administrator needs to correct the permissions of a log file on the server. Which of the following commands should be used to set filename.log permissions to -rwxr-r--. ?
Question102: As a Systems Administrator, to reduce disk space, you were tasked to create a shell script that does the following:
Add relevant content to /tmp/script.sh, so that it finds and compresses rotated files in /var/log without recursion.
INSTRUCTIONS
Fill the blanks to build a script that performs the actual compression of rotated log files.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Question103: A systems administrator wants to test the route between IP address 10.0.2.15 and IP address 192.168.1.40.
Which of the following commands will accomplish this task?
Question104: An organization's business office needs to collaborate on quarterly reports and asks the systems administrator to create a finance group. The administrator creates the following directory: drwxrwxr-x Business Business
|j096 Oct 15 16:40 Q1
Which of the following commands will allow all members of the finance group to have group ownership of all files created in the Q1 directory while ensuring that members of the business group preserve access? (Select two).
Question105: A systems engineer deploys a new application server, but the server cannot communicate with the back-end database hostname. The engineer confirms that the application server can ping the database server's IP address. Which of the following is the most likely cause of the issue?
Question106: Users are reporting that writes on a system configured with SSD drives have been taking longer than expected, but reads do not seem to be affected. A Linux systems administrator is investigating this issue and working on a solution. Which of the following should the administrator do to help solve the issue?
Question107: A cloud engineer wants to delete all unused networks that are not referenced by any container. Which of the following commands will achieve this goal?
Question108: A systems administrator needs to know the mail exchange (MX) record for the foo.com domain. Which of the following commands will accomplish this task?
Question109: A junior systems administrator has just generated public and private authentication keys for passwordless login. Which of the following files will be moved to the remote servers?
Question110: 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 una-ble to log in to the server?
Question111: A systems administrator is investigating an issue in which one of the servers is not booting up properly. The journalctl entries show the following:
Which of the following will allow the administrator to boot the Linux system to normal mode quickly?
Question112: The users of a Linux system are unable to use one of the application filesystems. The following outputs have been provided:
bash
$ cd /app
$ touch file
touch: cannot touch 'file': Readonly file system
Output 2
/dev/sdcl on /app type ext4 (ro,relatime,seclabel,data=ordered)
Output 3
/dev/sdcl /app ext4 defaults 0 0
Output 4
[302.048075] Buffer I/O error on dev sdcl, logical block 0, async page read
[302.048490] EXT4-fs (sdcl): Attempt to read block from filesystem resulted in short read while trying to re- open /dev/sdcl Which of the following actions will resolve this issue?
Question113: A systems administrator is tasked with changing the default shell of a system account in order to disable iterative logins. Which of the following is the best option for the administrator to use as the new shell?
Question114: A systems administrator is gathering information about a file type and the contents of a file. Which of the following commands should the administrator use to accomplish this task?
Question115: A systems administrator created a new directory with specific permissions. Given the following output:
arduino
$ ls -ld /comptia
drwxr-x--- 2 root root 4096 Oct 20 20:13 /comptia
$ getfacl /comptia
# file: /comptia
# owner: root
# group: root
user::rwx
group::r-x
other::---
default:user::rwx
default:group::r-x
default:group:wheel:rwx
default:mask::rwx
default:other::---
Which of the following permissions are enforced on /comptia?
Question116: A Linux administrator is installing a web server and needs to check whether web traffic has already been allowed through the firewall. Which of the following commands should the administrator use to accomplish this task?
Question117: A security team discovers that a web server has been running with elevated privileges and identifies it as a security violation. Which of the following items needs to be added to the webserver.service file to remediate the issue?
Question118: An administrator needs to allow remote administrative access to a Linux server only to employees who are using the authorized private key. Which of the following options should the administrator set in the SSHD configuration file to achieve the goal?
Question119: An administrator is provisioning an Apache web server. When the administrator visits the server website, the browser displays a message indicating the website cannot be reached. Which of the following commands should the administrator use to verify whether the service Is running?
Question120: A cloud engineer needs to change the secure remote login port from 22 to 49000. Which of the following files should the engineer modify to change the port number to the desired value?
Question121: A Linux administrator needs to analyze a failing application that is running inside a container. Which of the following commands allows the Linux administrator to enter the running container and analyze the logs that are stored inside?
Question122: Due to low disk space, a Linux administrator finding and removing all log files that were modified more than
180 days ago. Which of the following commands will accomplish this task?
Question123: A Linux administrator is configuring a two-node cluster and needs to be able to connect the nodes to each other using SSH keys from the root account. Which of the following commands will accomplish this task?
Question124: A systems technician is configuring an application server to accept packets from a trusted source with the IP address 192.168.10.22. Which of the following commands will allow communication between the two servers?
Question125: A systems administrator receives reports that several virtual machines in a host are responding slower than expected. Upon further investigation, the administrator obtains the following output from one of the affected systems:
Which of the following best explains the reported issue?
Question126: A systems administrator created a user cron to run a scheduled database backup cronjob on the server at 1 a.
m. every day. The following is the cronjob syntax:
0 1 * * * /bin/sh backup.sh
The backups, however, are not being created. When checking the crontab file, the administrator sees the following error:
/var/spool/cron/crontab/cron: Permission denied
Which of the following will permit the cronjob to execute?
Question127: A Linux systems administrator is trying to execute a particular shell script on a server. The administrator reviews the following outputs:
shell
$ ./startup.sh
bash: ./startup.sh: Permission denied
$ ls -l startup.sh
-rw-rw-r-- 1 companyabc companyabc 18 October 15:35 startup.sh
Which of the following commands should the administrator use to allow the script to run?
Question128: An administrator would like to mirror the website files on the primary web server, www1, to the backup web server, www2. Which of the following commands should the administrator use to most efficiently accomplish this task?
Question129: After installing a new version of a package, a systems administrator notices a new version of the corresponding, service file was Installed In order to use the new version of the, service file, which of the following commands must be Issued FIRST?
Question130: A Linux administrator has defined a systemd script docker-repository.mount to mount a volume for use by the Docker service. The administrator wants to ensure that Docker service does not start until the volume is mounted. Which of the following configurations needs to be added to the Docker service definition to best accomplish this task?
Question131: A Linux engineer is setting the sticky bit on a directory called devops with 755 file permission. Which of the following commands will accomplish this task?
Question132: Which of the following Git commands would send committed changes to a remote repository?
Question133: A systems administrator identifies multiple processes in a zombie state. Which of the following signals would be best for the administrator to send to the PPID?
Question134: A systems administrator needs to clone the partition /dev/sdc1 to /dev/sdd1. Which of the following commands will accomplish this task?
Question135: A systems administrator is deploying three identical, cloud-based servers. The administrator is using the following code to complete the task:
Which of the following technologies is the administrator using?
Question136: At what point is the Internal Certificate Authority (ICA) created?
Question137: A DevOps engineer wants to allow the same Kubernetes container configurations to be deployed in development, testing, and production environments. A key requirement is that the containers should be configured so that developers do not have to statically configure custom, environment-specific locations.
Which of the following should the engineer use to meet this requirement?
Question138: A systems engineer has deployed a new application server, but the server cannot communicate with the backend database hostname. The engineer confirms that the application server can ping the database server's IP address. Which of the following is the most likely cause of the issue?
Question139: Users report that they are unable to reach the company website https://www.comptia.org. A systems administrator confirms the issue with the following command:
# curl https://www.comptia.org
curl: (7) Failed to connect to www.comptia.org port 443: No route to host The administrator logs in to the company's web server to check its configuration and sees the following output:
[email protected]:-># firewall-cmd --list-all
public (active)
target: default
icmp-block-inversion: no
interfaces: dummy0 eth0
sources:
services: cockpit dhcpv6-client http ssh
ports: 3001/tcp
protocols:
forward: no
masquerade: no
forward-ports:
source-ports:
icmp-blocks:
rich rules:
rule family="ipv4" source address="61.177.173.6" port port="ssh" protocol="tcp" reject type="icmp-port- unreachable" rule family="ipv4" source address="185.143.45.164" port port="ssh" protocol="tcp" reject type="icmp-port- unreachable" rule family="ipv4" source address="143.198.60.41" port port="ssh" protocol="tcp" reject type="icmp-port- unreachable" [email protected]:-># ip route default via 172.31.1.1 dev eth0 proto dhcp src 65.21.187.65 metric 100
10.0.6.0/24 dev dummy0 proto kernel scope link src 10.0.6.65 metric 550
172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.0.1
172.18.0.0/16 dev br-28ac2eaeeca1 proto kernel scope link src 172.18.0.1
172.19.0.0/16 dev br-fb3897555ca3 proto kernel scope link src 172.19.0.1 linkdown
172.31.1.1 dev eth0 proto dhcp scope link src 65.21.187.65 metric 100
192.168.224.0/20 dev br-e949ab177d79 proto kernel scope link src 192.168.224.1 linkdown
192.168.240.0/20 dev br-6adf72ac0ae3 proto kernel scope link src 192.168.240.1 linkdown Which of the following is causing the issue?
Question140: A Linux administrator would like to use systemd to schedule a job to run every two hours. The administrator creates timer and service definitions and restarts the server to load these new configurations. After the restart, the administrator checks the log file and notices that the job is only running daily. Which of the following is MOST likely causing the issue?
Question141: As part of the requirements for installing a new application, the swappiness parameter needs to be changed to
O. This change needs to persist across re-boots and be applied immediately. A Linux systems administrator is performing this change. Which of the following steps should the administrator complete to accomplish this task?
Question142: An administrator attempts to rename a file on a server but receives the following error.
The administrator then runs a few commands and obtains the following output:
Which of the following commands should the administrator run NEXT to allow the file to be renamed by any user?
Question143: The journald entries have filled a Linux machine's /var volume. Which of the following is the best command for a systems administrator to use to free up the disk space occupied by these entries?
Question144: A Linux administrator wants to find out whether files from the wget package have been altered since they were installed. Which of the following commands will provide the correct information?
Question145: A database administrator requested the installation of a custom database on one of the servers. Which of the following should the Linux administrator configure so the requested packages can be installed?
Question146: A Linux administrator has been tasked with installing the most recent versions of packages on a RPM-based OS. Which of the following commands will accomplish this task?
Question147: A systems administrator is tasked with installing GRUB on the legacy MBR of the SATA hard drive. Which of the following commands will help the administrator accomplish this task?
Question148: Users are reporting that a Linux server is responding slowly. A systems administrator troubleshooting the server issue sees the following:
# iostat -m 2
Linux 3.10.0-1160.66.1.el7.x86_64 (myhost) 10/19/2022 x86_64 (4 CPU)
avg-cpu: %user %nice %system %iowait %steal %idle
24.30 0.01 0.29 50.38 4.00 19.01
Device: tps MB_read/s MB_wrtn/s MB_read MB_wrtn
sdd 15.65 0.48 0.83 4936250 8513501
# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 16G 0 16G 0% /dev
tmpfs 16G 64K 16G 1% /dev/shm
/dev/mapper/root 35G 8.8G 26G 26% /
/dev/sda2 497M 144M 354M 29% /boot
/dev/mapper/tmp 10G 38M 10G 1% /tmp
/dev/mapper/var 15G 13G 2.2G 86% /var
/dev/mapper/varlib 650G 397G 254G 62% /var/lib
/dev/mapper/varlog 15G 9.5G 5.5G 64% /var/log
/dev/mapper/varaudit 15G 72M 15G 1% /var/log/audit
Which of the following is most likely the issue?
Question149: A Linux administrator needs to rebuild a container with the httpd service in order to change some default parameters. Which of the following should be the first command line in the Dockerfile?
Question150: Which of the following technologies can be used as a central repository of Linux users and groups?
Question151: A systems administrator installed a new software program on a Linux server. When the systems administrator tries to run the program, the following message appears on the screen.
Which of the following commands will allow the systems administrator to check whether the system supports virtualization?
Question152: A Linux administrator has set up a new DNS forwarder and is configuring all internal servers to use the new forwarder to look up external DNS requests. The administrator needs to modify the firewall on the server for the DNS forwarder to allow the internal servers to communicate to it and make the changes persistent between server reboots. Which of the following commands should be run on the DNS forwarder server to accomplish this task?
Question153: Joe, a user, is unable to log in to the system. The Linux administrator checks the /etc/passwd file and reviews the following output:
Joe:x:1002:1002::/home/Joe:/sbin/nologin
Which of the following should the administrator do to fix this issue?
Question154: A cloud engineer needs to check the link status of a network interface named eth1 in a Linux server. Which of the following commands can help to achieve the goal?
Question155: A Linux engineer has been notified about the possible deletion of logs from the file /opt/app/logs. The engineer needs to ensure the log file can only be written into without removing previous entries.
Which of the following commands would be BEST to use to accomplish this task?
Question156: A DevOps engineer is working on a local copy of a Git repository. The engineer would like to switch from the main branch to the staging branch but notices the staging branch does not exist. Which of the following Git commands should the engineer use to perform this task?
Question157: Which of the following technologies provides load balancing, encryption, and observability in containerized environments?
Question158: 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?
Question159: The group named support is unable to make changes to the config file. An administrator is reviewing the permissions and sees the following:
S Is -1 config
-rw-rw----. 1 root app 4682 02-15 11:25 config
Which of the following should the administrator execute in order to give the support group access to modify the file while preserving the current ownership?
Question160: Which of the following commands is used to tune kernel parameters?
Question161: Employees in the finance department are having trouble accessing the file /opt/work/file. All IT employees can read and write the file. Systems administrator reviews the following output:
Which of the following commands would permanently fix the access issue while limiting access to IT and finance department employees?
Question162: Which of the following can be used as a secure way to access a remote termi-nal?
Question163: An administrator made a change to a system's network configuration. Which of the following best represents what the administrator should do to have the new configuration take effect?
Question164: Users are experiencing high latency when accessing a web application served by a Linux machine. A systems administrator checks the network interface counters and sees the following:
Which of the following is the most probable cause of the observed latency?
Question165: A Linux administrator is providing a new Nginx image from the registry to local cache. Which of the following commands would allow this to happen?
Question166: Joe, a user, is unable to log in to the Linux system Given the following output:
Which of the following command would resolve the issue?
Question167: What is the main objective when using Application Control?
Question168: In which of the following filesystems are system logs commonly stored?
Question169: A systems technician is working on deploying several microservices to various RPM-based systems, some of which could run up to two hours. Which of the following commands will allow the technician to execute those services and continue deploying other microservices within the same terminal section?
Question170: A systems administrator has been unable to terminate a process. Which of the following should the administrator use to forcibly stop the process?
Question171: A technician just fixed a few issues in some code and is ready to deploy the code into production. Which of the following steps should the technician take next?
Question172: Which of the following tools is commonly used for creating CI/CD pipelines?
Question173: A systems administrator intends to use a UI-JID to mount a new partition per-manently on a Linux system.
Which of the following commands can the adminis-trator run to obtain information about the UUlDs of all disks attached to a Linux system?
Question174: 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?
Question175: A DevOps engineer needs to download a Git repository from https://git.company.com/admin/project.git.
Which of the following commands will achieve this goal?
Question176: A systems administrator is cloning a system partition /dev/sda1 to /dev/sdc1. Which of the following commands would allow the administrator to accomplish this task most efficiently?
Question177: Users have been unable to save documents to /home/tmp/temp and have been receiving the following error:
Path not found
A junior technician checks the locations and sees that /home/tmp/tempa was accidentally created instead of
/home/tmp/temp. Which of the following commands should the technician use to fix this issue?
Question178: A newly created container has been unable to start properly, and a Linux administrator is analyzing the cause of the failure. Which of the following will allow the administrator to determine the FIRST command that is executed inside the container right after it starts?
Question179: A Linux administrator is troubleshooting an issue in which an application service failed to start on a Linux server. The administrator runs a few commands and gets the following outputs:
Based on the above outputs, which of the following is the MOST likely action the administrator should take to resolve this issue?
Question180: A Linux administrator needs to check extended permissions applied to the directory test. Which of the following commands should the administrator use to help with this task?
Question181: After trying to install an RPM package unsuccessfully, a systems administrator verifies the integrity of the package's database. The administrator discovers that the database is corrupted and needs to be recreated.
Which of the following commands will help accomplish this task?
Question182: A Linux administrator was asked to run a container with the httpd server inside. This container should be exposed at port 443 of a Linux host machine while it internally listens on port 8443. Which of the following commands will accomplish this task?