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By default the paging file 1.5 times the size of the RAM installed
The default domain functional level provides the highest functionality with no backwards compatibility is windows 2003 functional level
Kerberos is the default protocol used by Windows Vista/XP
Local
Yes, you can get it, but it's not installed by default. You can get it from Microsoft, Inc.
Not all Codecs in Windows Media Player is installed on all Microsoft Windows PCs, because its not installed on default. Most users would use another media player that already comes with the Codecs by default.
Intersite Topology Generator (ISTG), which is responsible for the connections among the sites. By default Windows 2003 Forest level functionality has this role. By Default the first Server has this role. If that server can no longer preform this role then the next server with the highest GUID then takes over the role of ISTG.
In Windows 7, you'll find it in... Start > All Programs > Accessories.
File services
Kerberos
Yes. Internet Explorer 7 is installed on Windows Vista by default.