A Linux amdinisrator is adding a user’s local Linux account to the accounting group. The user is also a member of the finance group. Which of the following is the BEST way to add the user to the accounting group while still maintaining the user’s existing group members ships?
A security team informs the Linux administrator that a specific sever is acting as a n pen relay. To which of the following is the security team referring?
A systems administrator wants to increase the existing drive space on a Linux server with a software RAID. After physically adding the new drive to the system, and then adding the drive to the RAID array,
the administrator notices the available drive space has not increased. A status of the array shows the new drive and the original storage space:
md0 : active Raid sdd1[3]S sdc1[2] sdb1[1] sda1[0]
954585654 blocks level5 64K chunk algorithm 2 [3/3] [UUU]
Which of the following should the administrator do to make all storage space available on the RAID array?
A systems administrator needs to write a script that performs unattended package upgrades. Which of the folowing flags should be used with either yum or apt to meet this goal?
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?
A technician wants to configure a Unux server as a gateway firewall. The technician has implemented the proper ACLs and port address translation policies, but network traffic is not passing from the LAN to the WAN. Which of the followng should the technician configure to fa this issue?
A system administrator is investigating why user3 cannot log in using SSH to one of the servers.
An attempt to log in results in the following:
Which of the following commands should the systems administrator execute to allow user3 log in to the server?
A systems administrator would like to back up all of the'. conf' files on a server The administrator runs the command:
Find / --name ‘’*conf’’ > backup,tar
After investigating the backup, tar file the administrator realizes that the contents of the configuration files were not backed up property. Which of the following would BEST accomplish this task?
Joe, a system administrator, realizes that the time zone on a system is different than his local time zone. Joe runs the command export Tz-America .Chicago to resolve this. However the next Joe logs in, Joe notices the issue has returned. Which of the following is the BEST way for Joe to fix this issue so the solution persists across logins?
A systems administrator copied the latest archive Of the corporate application, corpapp.tar.gz, to a new server. The backup software lists the following entry in the log file:
Which of the following should the administrator run to verify the archive copied correctly without corruption?
An administrator wants to add a user named comptia to the system administrators group. Which of the following commands will accomplish this task?
A Linux administrator mounts a directory to a Linux workstation by executing the command mount -t ext4 /dev/sdb /mnt /leg. After rebooting the workstation the mounted device is missing. Which of the following commands should it is mounted after reboot?
Users are reporting collaborate.company.com is inaccessible from the user VLAN, but there is no issue connecting to the system’s web page from the DMZ. Given the following outputs from commands run on the system:
Which of the following explains why users are unable to access the system from the user VLAN, and how can the administrator remediate this issue?
Joe is no longer employed by a company, and Ann is taking over his projects. Several team members work out Of the directory, including Ann. The administrator needs to assign ownership Of all of Joe's files in the /projects directory to Ann. Which of the following should the administrator run to accomplish this task?
A Linux administrator is tasked with implementing a solution that will centralize information and allow it to be searchable and available for reporting purposes. Which of the following server roles should the administrator implement?
A technician reviews me following output:
Which of the following commands should the technician execute to ensure the system has the appropriate paging? (Select TWO).
A user does not want Bluetooth to start up event time the system starts. Which of the following commands should the user execute to accomplish this task?
A systems administrator scheduled a new kernel module to replace an existing module while the system is running. Which of the ktoung wi accompfctfi ths task?
A)
B)
C)
D)
A Linux administrator wants to load the KVM module into the kernel. Which of the following commands should the administrator use?
After running an Nmap scan on a local area network, a penetration tester notices several older Linux servers have port 23 open Which of the following should the systems administrator do as a secunty best practice?
An administrator uses a tool to perform roiling deployments when the production application needs to be updated. The tool temporarily removes 10% of the systems from the load balancer at a time and it pushes the newest version of the application to each system. If there are errors the tool rolls back the changes. Which of the following does this scenario BEST describe?
An administrator schedules downtime on a system to find out why it takes so long to boot. Which of the following commands will help the administrator determine the issue with this system?
An administrator needs to allow additional specific users and groups to have access to a foWer without removing the original owner or group. Which of the following commands should the administrator use to complete this task?
A Linux administrator created a new log file in /var/log/newlog to monitor a newly installed application. The administrator is now configuring paramters of the file so it will be rotated on a weekly basis or when it becomes larger than 1MB in...
should exist in the /var/log directory. Which of the following should be added to he /etc/ logrotate.conf file to meet this objectives?
A)
B)
C)
D)
An administrator tries to log m to a Linux host with the root account but receives the following error: permission denied. A colleague confirms the password being used is correct. Which of the following is the MOST likely cause..
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?
A technician reviews the following output:
Which of the following commands should the technical execute to ensure the system has the appropriate paging? (Select TWO.)
A systems administrator a retting an HTTPO server on a Lnux server and configuring as a proxy server The administrator runs the following commands to venfy that the service is running:
However, the arjminrstraior is getting a 503 error when browsing to portal.company. internal. After reviewing the logs, the following error information is discovered:
Which of the following commands BEST resolves the issue?
A newly deployed application is not able to reach the database that is running on a Linux server. The connection should occur at port 1521/tcp from appsrv 192.168.1.11 to dbsrv
192.168.1.12.
A server administrator runs a few diagnostic commands with following results:
The same command when run from the application server gives the following result:
Both machines are in the same IP subnet, so no external network device is causing the issue.
Which of the following commands BEST solves the connectivity issue at the dbsrv machine? (Select TWO).
Which of the following can be used to check the status of wireless devices that are connected to the system?
A technician suspects a company's border firewall is down, thus blocking Internet access. The technician executes the following commands:
#ping -c 1 firewall.company.com
64 bytes from firewall.company.com (192.168.1.1): icmp_seq=1 ttl=64 time=0.061ms
#ping -c 16 www.comptia.com
16 packets transmitted, 0 received, 100% packet loss, time 14999ms
Which of the following commands should the technician use to BEST determine the source of this outage?
An administrator needs to copy files from a Samba share where the server name is accounting. local, the share is reports, and the username is admin. Assuming local directories exist, which of the following commands would connect to the share?
A Linux administrator executed 1vextend to expand disk space to a partition from 8GB to 40GB However, the filesystem is not showing the additional space The administrator runs several commands and rectyes the following output:
Which of the following commands should the administrator run to resolve the issue?
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?
A Linux systems administrator is setting up SSH access with PKI for several using their newly created RSA keys. Which of the following MOST securely achieves this task?
A Linux administrator must identify a user with high disk usage. The administrator runs the # du –s /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?
A Linux administrator wants to fetch a Git repository from a remote Git server.
Which of the following is the BEST command to perform this task?
A systems administrator needs to append output of ls –lha /opt command to the contents of a test.txt file. Which of the following commands will accomplish this?
A junior administrator of a physical server receives log messages indicating the out-of-memory killer has been active. All memory slots are in use on the motherboard, but additional disk space is available. Space has been allocated for a swap file.
Which of the following should the administrator use to reduce the output of memory messages?
An analyst is trying to determine which public IP addresses are managed by Company A, but the script is not working correctly.
Which of the following explains what is wrong with the script?
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?
An administrator notices that a long-running script, /home/user/script.sh, is taking up a large number of system resources. The administrator does not know the script’s function. Which of the following commands should the administrator use to minimize the script’s impact on system resources?
An administrator needs to generate a list of services that are listening on TCP and/or UDP ports. Which of the following tools should the administrator use?
A Linux storage administrator wants to create a logical volume group. Which of the following commands is required to start the process?
Joe, a user, reports that he is no longer able to write files to his home directory. Upon inspection, the Linux
administrator discovers that attempting to create a new file gives the following error: No space left on device. However, the disk and partition are not full. Which of the following commands would be BEST for the administrator to use to continue troubleshooting this problem?
A junior Linux administrator is installing patches using YUM. The administrator issues the following command:
yum list installed
The output of the command is as follows:
Given this scenario and the output, which of the following should the administrator do to address this issue?
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?
A directory called /employee is shared with many employees in a company. New hardware was acquired, and the systems administrator needs to back up all files in /employee before the server is replaced.
Which of the following commands should be used to back up all the files and compress them to use little space in the filesystem?
A systems administrator is reviewing the following partial output:
Which of the following should the administrator use to find contact information for the connections?
A user is unable to write data to an NFS datastore at /mnt/storage. A df command indicates 50% free
inodes.
Which of the following commands should the user attempt NEXT to diagnose the situation?
Using which of the following control mode commands is the correct way to substitute all occurrences of /dev/
sdc with /dev/sdd while editing a file in vi?
A systems administrator wants to verify the DNS information of a system that is in production.
Which of the following will provide this information?
A systems administrator notices a large number of autoloaded device modules are no longer needed and decides to do a cleanup of them. Which of the following commands will accomplish this task?
A Linux user uses a VPN to securely access the company's systems from a laptop.
Which of the following protocols are MOST likely used to secure the VPN connection? (Choose two.)
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?
A systems administrator wants to disable the Linux Kernel WatchDog Timer Driver for security purposes.
Which of the following will accomplish this task?
A systems administrator is implementing disk quotas on /home. During the process, the administrator receives
the following error:
Cannot find filesystem to check or filesystem not mounted with user quota option.
Which of the following is the correct order of steps the administrator should follow to resolve this error?
A Linux administrator is checking connectivity between two servers in separate subnets:
Server A: 10.1.2.20 (source)
Server B: 10.2.1.10 (destination on port 8080)
The administrator tried to run the curl 10.2.1.10:8080 command on server A and received the following output:
curl: (7) Failed to connect to 10.2.1.10 port 8080: Connection refused.
The administrator checked on server B and confirmed nothing is listening on port 8080.
Which of the following commands, when run on server B, would have allowed the administrator to test the connection successfully?
An administrator is installing a new kernel but is getting an error indicating the filesystem is out of space. A disk
usage check shows / has plenty of space.
Which of the following BEST represents where the administrator should check next?
A systems administrator needs to allow the Linux server to receive HTTP connections from Internet hosts. By default, the port for HTTP connections is blocked. Which of the following rules should be added in the firewall to allow this type of connection?
Users in the payroll department are not configured to use DNS due to security concerns. The users ask the
junior Linux administrator to configure their workstations to access the payroll server at 192.168.204.11 by the
name “Payroll”. Which of the following commands should the administrator issue to meet this request?
A Linux administrator receives a call from the network operations team that one of the database applications is down on a Linux server. The Linux server is configured with RAID 1 for redundancy, and the array /dev/md0 consists of two devices called /dev/sda1 and /dev/sdb1. After looking at the status of the RAID 1 array in the /proc/mdstat file, the administrator discovers the RAID 1 array is degraded and the disk /dev/sdb1 on which the database application was installed appears to have failed.
Which of the following steps should the administrator take to remove the device /dev/sdb1 from the RAID array md0? (Choose two.)
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?
A user, jsmith, needs access to database files located on a server. Which of the following will add jsmith to the “dba” group and preserve existing group memberships?
An administrator is analyzing a Linux server which was recently hacked.
Which of the following will the administrator use to find all unsuccessful login attempts?
A junior administrator needs to unload an older video kernel module.
Which of the following commands would BEST accomplish this task?
A junior Linux administrator is installing a new application with CPU architecture requirements that have the following specifications:
x64 bit
3.0GHz speed
Minimum quad core
The administrator wants to leverage existing equipment but is unsure whether the requirements of these systems are adequate. The administrator issues the following command cat/proc/cpuinfo. The output of the command is as follows:
Which of the following is the recommended course of action the administrator should take based on this output?
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TESTED 26 Apr 2024
