Exam 18: CompTIA Linux+

A Linux systems administrator needs to provision multiple web servers into separate regional datacenters. The systems architect has instructed the administrator to define the server infrastructure using a specific tool that consumes a text-based file. Which of the following is the BEST reason to do this?

When requesting SSH access to a remote system, a user accidentally emailed the id_rsa key to the administrator. Which of the following should the user do NEXT?

A systems administration team has decided to treat 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?

A technician wants to secure a sensitive workstation by ensuring network traffic is kept within the local subnet. To accomplish this task, the technician executes the following command: echo 0 > /proc/sys/net/ipv4/ip_default_ttl Which of the following commands can the technician use to confirm the expected results? (Choose two.)

An administrator reviews the following configuration file provided by a DevOps engineer: Which of the following would the application parsing this file MOST likely have to support?

A user receives an access_denied error when trying to modify a file, even though the file permissions are set to 777. Which of the following commands should be used to view additional file permissions?

A company wants to provide internal identity verification services for networked devices. Which of the following servers should be installed?

A junior Linux administrator is updating local name resolution to support IPv6. The administrator issues the command cat /etc/hosts and receives the following output: 127.0.0.1      localhost Which of the following actions should the administrator perform to accomplish this task?

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?

A systems administrator notices several intensive tasks executing from users Joe and Ann. These processes are impacting server operations but must be allowed to continue running. Which of the following commands should the systems administrator run to reduce the impact on the server?

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?

A user wants to list the lines of a log, adding a correlative number at the beginning of each line separated by a set of dashes from the actual message. Which of the following scripts will complete this task?

A systems administrator needs to conduct maintenance on a server. Which of the following commands will place the administrator in the appropriate runlevel?

A four-drive Linux NAS has been improperly configured. Each drive has a capacity of 6TB, for a total storage capacity of 24TB. To reconfigure this unit to be not pluggable for drive replacement and provide total storage of 11TB to 12TB, which of the following would be the correct RAID configuration?

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 company wants to ensure that all newly created files can be modified only by their owners and that all new directory content can be changed only by the creator of the directory. Which of the following commands will help achieve this task?

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?

A Linux team is using Git to version a set of custom scripts. A team member has made an update to a script and published the changes to the repository. Which of the following is the BEST way to retrieve the latest changes to the administrator's local working copy?

A junior systems administrator needs to make a packet capture file that will only capture HTTP protocol data to a file called test.pcap . Which of the following commands would allow the administrator to accomplish this task?

A new user has been added to a Linux machine. Which of the following directories would contain the user's default files?