FD stands for which metric?

• A. Frame Delay(FD)
• B. Frame Delay Variation
• C. Frame Loss Ratio
• D. Frame Delay

Answer: (D)

FD is the abbreviation used for Frame Delay, which is the latency a single frame experiences as it travels from the source to the destination. This metric captures how long frames take to arrive and is a fundamental measure of network performance for real-time applications. Frame Delay Variation would refer to how much that delay changes from frame to frame (jitter), and Frame Loss Ratio tracks how often frames are dropped. The term Frame Delay aligns with FD, making it the correct interpretation.