Go back to 351-001 - CCIE Cisco Certified InterNetworking Expert

Question :-

In a network, all routers deploy FIFO queuing. The primary application running on the network is data backup by use of FTP. At certain times, users experience cyclical performance degradation. Which two items can mitigate this problem and help ensure bandwidth is used effectively in the network? (Choose two.)
traffic policing
CB-WFQ
MDRR
WRED

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