Final answer:
A good way of identifying non trusted data downloaded from an internet zone is by checking the file extension or format, using antivirus software, and being cautious of unfamiliar sources.
Step-by-step explanation:
A good way of identifying data downloaded from an internet zone that is non trusted (comes with a warning banner for download) is by checking the file extension or format of the downloaded file. Typically, files that are not trusted or potentially harmful may have extensions such as .exe, .bat, .dll, or .scr. These file formats are commonly used for executable files or scripts that can potentially harm your computer.
Another way to identify non trusted data is by using antivirus software. Antivirus programs can scan the downloaded file for any malicious code or viruses. If the antivirus software detects any threats, it will alert you and recommend deleting or quarantining the file.
Finally, it's important to be cautious when downloading files from unfamiliar or untrusted sources. If the website or source seems suspicious or untrustworthy, it's best to avoid downloading files from there to protect your computer and personal information.