In Active Directory replication, the bridgehead server is a contact point in a site, which is used to exchange or replicate directory information between Active Directory sites. It acts as a gateway. When a bridgehead server is used, all Exchange traffic is channeled through that server, which transfers the data to the appropriate site.
The user interface for font management has been overhauled. As with Windows Vista, the collection of installed fonts is shown in a Windows Explorer window, but fonts from the same font family appear as “stacks” instead of as individual icons. A user can then double-click on the font stack and see the individual font. A preview of the font is displayed as part of the icon as well. New options for hiding installed fonts are included; a hidden font remains installed, but is not enumerated when an application asks for a list of available fonts. Windows Vista had received considerable criticism for including the same “Add Font” dialog that had existed as far back as Windows NT 3.; this dialog has been removed.
The Font dialog box has also been updated to show previews of the font selection in the selection lists.
The fontview.exe default font viewing application has replaced the “Properties” button with a “Install” button.
The taskbar has seen the biggest visual changes, where the Quick Launch toolbar has been replaced with pinning applications to the taskbar. Buttons for pinned applications are integrated with the task buttons. These buttons also enable the Jump Lists feature to allow easy access to common tasks. The revamped taskbar also allows the reordering of taskbar buttons. To the far right of the system clock is a small rectangular button that serves as the Show desktop icon. This button is part of the new feature in Windows 7 called Aero Peek. Hovering over this button makes all visible windows transparent for a quick look at the desktop. In touch-enabled displays such as touch screens, tablet PCs, etc., this button is slightly wider to accommodate being pressed with a finger. Clicking this button minimizes all windows, and clicking it a second time restores them. Additionally, there is a feature named Aero Snap, that automatically maximizes a window when it is dragged to either the top or left/right edges of the screen. This also allows users to snap documents or files on either side of the screen to compare them. When a user moves windows that are maximized, the system restores their previous state automatically. This functionality is also accomplished with keyboard shortcuts. Unlike in Windows Vista, window borders and the taskbar do not turn opaque when a window is maximized with Windows Aero applied. Instead, they remain transparent.
The PrepKit for Microsoft exam 70-649 is designed to help individuals prepare for the actual Microsoft exam 70-649. The Microsoft Technology Specialist (TS) exam, Exam 70-649: TS: Upgrading Your MCSE on Windows Server 2003 to Windows Server 2008, Technology Specialist, exam fulfills the Microsoft Certified Technology Specialist (MCTS) on Windows Server 2008 requirements of Exams 70-640, 70-642, and 70-643. Before taking the 70-649 exam, you should practice the following: