CompTIA Cloud+ Practice Test

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When a new delivery controller returns an error on license code entry, what is the most likely cause?

A firewall is blocking the port on the license server.
The existing license is for a lower version.
The existing license is not supported for clusters.
The existing license has expired.

The correct answer is: A firewall is blocking the port on the license server.

When a new delivery controller returns an error on license code entry, the most likely cause is that a firewall is blocking the port on the license server. When communication between the delivery controller and the license server is disrupted due to network security settings, such as a firewall blocking the necessary ports, it can prevent the controller from validating the license. As a result, the license entry may fail, leading to an error message. The other options—issues like having a lower version license, an unsupported license for clusters, or an expired license—are specific conditions that could cause licensing issues; however, they would likely lead to different types of error messages related to version support or expiration rather than a straightforward failure to connect or verify the license due to network issues. Therefore, the connectivity issue is the most probable explanation for the licensing error encountered during entry.