NA

Correct Option: D

When the user leaves instance’s page or closes its window a plug-in instance is deleted. Then Gecko calls the function NPP_Destroy to inform plug-in that the instance is being deleted. Plug-in API calls and callbacks use main Navigator thread.

NA

Correct Option: B

When Gecko based browser starts, it checks certain directories for plugins. Windows have MOZ_PLUGIN_PATH, Profile directory\plugins, %APPDAT%/Mozilla\plugins, Plug-ins with toolkit bundles, HKEY_CURRENT_USER\Software\MozillaPlugins\*\Path are some of the directories in windows.

NA

Correct Option: B

/Library/Internet Plug-Ins, ~/Library/Internet Plug-Ins, Plug-ins with the toolkit bundles, /System/Library/Frameworks/JavaVM.framework/Versions/Current/Resources, Profile directory/plugins are some of the directories in Mac OS X for plug-ins.

NA

Correct Option: D

maximumAge specifies the expiry time in milliseconds for cached location information, timeout property is the number of milliseconds the web application is willing to wait for a position.

NA

Correct Option: C

The plug-in file type depends on the platform. The file type in MS Windows is .DLL which is Dynamic Link Library files. Unix has .SO or .DSO files which are shared objects. MAC OS X has file PPC/x86/Universal loadable Mach-O bundle.