Today’s 220-1202 CompTIA A+ Pop Quiz: This app has a lot of cytoplasmA technician is installing a mission-critical application and needs to ensure the installation package has not been corrupted during the download process. What method should the technician use to verify the integrity of the file? A) Open the file in a Hex editor and look for the 'Authentic' string in the header. B) Scan the file with an antivirus utility to see if it identifies the publisher as ‘Trusted'. C) Verify that the file size on disk matches the file size reported in the web browser's download manager. D) Calculate the file's hash and compare it against the value provided by the official vendor. E) Check the file's 'Properties' to ensure the 'Read-only' attribute is enabled by the publisher. F) Use a microscope