Which of the following techniques is used to maintain acceptable data traffic performance?
a. WFQ
b. WRED
c. CQ
d. None of the above
b. WRED
Explanation: Weighted Random Early Discard (WRED) is used to minimize congestion problems by configuring the network routers and switches to intelligently discard lower-priority packets. This is done to maintain acceptable data traffic performance of an integrated data and VoIP network. A technique called weighted fair queuing (WFQ) is available on many routers and is used to determine what data traffic gets priority for transmission. Custom Queuing (CQ) reserves a portion of the channel bandwidth for selected data traffic (for example, VoIP traffic).
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