Your network contains a server that has the Remote Desktop Session Host (RD Session Host) role service installed.
You need to increase the bandwidth that is allocated for printing and for file transfers between the RD Session Host server and the Remote Desktop clients.
What should you do?
A. On the server, modify the RDP-Tcp settings.
B. On the server, modify the FlowControlChannelBandwidth registry setting.
C. On the clients, modify the FlowControlDisplayBandwidth registry setting.
D. On the clients, modify the Local Resources settings of the Remote Desktop connections.
Correct Answer: B
Explanation/Reference:
Display data prioritization
Display data prioritization automatically controls virtual channel traffic so that display, keyboard, and mouse data is given a higher priority over other virtual channel traffic, such as printing or file transfers. This prioritization is designed to ensure that your screen performance is not adversely affected by bandwidth intensive actions, such as large print jobs.
The default bandwidth ratio is 70:30. Display and input data will be allocated 70 percent of the bandwidth, and all other traffic, such as clipboard, file transfers, or print jobs, will be allocated 30 percent of the bandwidth.
You can adjust the display data prioritization settings by making changes to the registry of the terminal server. You can change the value of the following entries under the HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTermDD subkey:
FlowControlDisable
FlowControlDisplayBandwidth
FlowControlChannelBandwidth
FlowControlChargePostCompression
If these entries do not appear, you can add them. To do this, right-click TermDD, point to New, and then click DWORD (32-bit) Value.
You can disable display data prioritization by setting the value of FlowControlDisable to 1. If display data prioritization is disabled, all requests are handled on a first-in-first-out basis.
The default value for FlowControlDisable is 0.
You can set the relative bandwidth priority for display (and input data) by setting the FlowControlDisplayBandwidth value.
The default value is 70; the maximum value allowed is 255.
You can set the relative bandwidth priority for other virtual channels (such as clipboard, file transfers, or print jobs) by setting the FlowControlChannelBandwidth value. The default value is 30; the maximum value allowed is 255.
The bandwidth ratio for display data prioritization is based on the values of FlowControlDisplayBandwidth and FlowControlChannelBandwidth.
For example, if FlowControlDisplayBandwidth is set to 150 and FlowControlChannelBandwidth is set to 50, the ratio is 150:50, so display and input data will be allocated 75 percent of the bandwidth.
Source: http://technet.microsoft.com/en-us/library/cc772472(WS.10).aspx
