A cybersecurity researcher purchased several used laptops at an auction. While the hard drives appeared to be blank, the researcher was able to recover all the data that previously existed on the drives. Which of the following methods did the original owner MOST likely use to clear the drives' contents?

A desktop technician is attempting to upgrade several machines to Windows 10. After releasing there is
only one disc for the installation, the technician decides to upgrade over the network. Which of the
following boot methods initiates such an upgrade?

Users are reporting slow connections on their mobile devices when trying to download large data files from the network servers, but users on wired connections are not having any issues. A network technician notices multiple alerts about wireless access points going offline, and several devices connecting to the WLAN are unable to authenticate successfully. Which of the following issues are the mobile users experiencing?

A network technician is creating a set of scripts to help complete some common tasks. The technician wants to leave notes within the scripts to explain the purpose of each section and allow for changes later. Which of the following should the technician use?

A customer is having issues with an Android-based smartphone after a recent application update. The application becomes unresponsive immediately after attempting to open it. Auto-sync is not enabled, and no recent backups exist for the smartphone. Without losing any critical information, which of the following should be performed NEXT to further troubleshoot the issue? (Choose two.)