All XK0-005 Test Inside CompTIA Questions

rpm -qa lists all installed packages and filtering with perl will show if Perl is installed or not. This command is useful for verifying prerequisites like the presence of certain software on the system.

To allow SFTP (which uses port 22, same as SSH) from a specific subnet using UFW, the most specific and correct syntax is:

bash

sudo ufw allow from 10.10.0.0/24 to any port 22

This allows traffic from a specific subnet to port 22, which is what’s required.

Option B allows traffic on an interface but is not limited to the subnet.

Option C is incomplete — it allows all ports from the subnet.

Option D is malformed syntax — 0:22/tcp is not a valid port range or UFW format.

The initial troubleshooting step when experiencing slow performance and potential memory or CPU issues is to analyze the current resource usage. Running tools like top or htop allows the administrator to observe real-time data on CPU, memory, and processes, providing insights into high resource usage. This is a non-invasive first step, helping to identify whether issues are due to overuse, application memory leaks, or specific processes. CompTIA Linux+ recommends understanding system resource behavior before taking further action. Reference: CompTIA Linux+ Study Guide.

To create a new feature in Git, you typically create a new branch. The command git branch creates a new branch where the feature can be developed independently.

Source: CompTIA Linux+ XK0-005 Study Guide – Chapter 14: Automation and Scripting