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?
Question 22
A junior administrator needs to unload an older video kernel module. Which of the following commands would BEST accomplish this task?
Question 23
An administrator is attempting to block SSH connections to 192.168.10.24 using the Linux firewall. After implementing a rule, a connection refused error is displayed when attempting to SSH to 192.168.10.24. Which of the following rules was MOST likely implemented?
Question 24
A junior Linux administrator is setting up system-wide configuration settings. The goal is to ensure the PATH environment variable includes the following locations for all users who log into a Linux system:
Question 25
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?
Question 26
A Linux 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?
Question 27
A junior Linux administrator is trying to verify connectivity to the remote host host1 and display round-trip statistics for ten ICMP requests. Which of the following commands should the administrator execute?
Question 28
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?
Question 29
A Linux systems administrator needs to copy the contents of a directory named `working` on the local working system to a folder /var/www/html on a server named `corporate-web`. Which of the following commands will allow the administrator to copy all the contents to the web server?
Question 30
A systems administrator has received reports of intermittent network connectivity to a particular website. Which of the following is the BEST command to use to characterize the location and type of failure over the course of several minutes?
