CCDE: Cisco Certified Design Expert (Written) — Question 24

FIFO queuing is being used on all routers in a network. The primary application running on the network is data backup using FTP. At certain times, users experience cyclical performance degradation.
What two things might mitigate this problem and help ensure bandwidth is used effectively in the network? (Choose two.)

Answer options

• A. traffic shaping
• B. CB-WFQ
• C. traffic policing
• D. WRED
• E. MDRR

Correct answer: B, D

Explanation

CB-WFQ (Class-Based Weighted Fair Queuing) prioritizes traffic and allocates bandwidth more effectively, which can help reduce performance degradation during heavy FTP usage. WRED (Weighted Random Early Detection) helps manage congestion by dropping packets selectively, preventing the network from becoming overloaded. The other options, while useful in certain scenarios, may not be as effective in addressing the cyclical performance issues described.