What is the most commonly used method to close an application that appears to be frozen on an OS X-based computer?
  • Use Force Quit.
Which Linux file system introduced the journaled file system, which can be used to minimize the risk of file system corruption in the event of a sudden power loss?
  • ext3
A Linux PC user notices that the PC freezes on startup and exhibits kernel panic where there is a stop screen. What is a possible cause for the issue?
  • A driver has become corrupted.
A mobile device user notices that the system update includes an update of the Primary Rate ISDN (PRI). What is the function of the PRI?
  • It is the configuration of the data rates between the device and the cell tower.
What is the purpose of using the auto-brightness feature on a mobile device with an LCD screen?
  • to conserve battery power

Android apps run primarily based on privileges enabled by the user. Sometimes an Android app requires extra privileges to access system components. How do Android apps run to accomplish both situations?

  • Android apps run in a sandbox.
An administrator is re-imaging a large number of Mac OS X machines. What built-in tool or command can be used to remotely boot the computers?
  • Netboot
What is the purpose of signature files used to secure mobile devices and operating systems?
  • They contain sample code from known viruses and malware that is used by security software to identify malicious software.