Which undesired effect of increasing the jitter compensation buffer is true?

Question

Options

• AThe overall transport utter decreases and quality improves
• BThe overall transport delay decreases and quality improves
• CThe overall transport jitter increases and quality issues can occur
• DThe overall transport delay increases and quality issues can occur

• A
  3% (1)
• B
  3% (1)
• C
  5% (2)
• D
  90% (36)

Explanation

A jitter buffer absorbs packet arrival variation (jitter) by temporarily holding packets and releasing them at a steady, uniform rate. When you increase the jitter buffer size, packets are held for a longer time before being played out. This directly increases the end-to-end transport delay. For real-time applications like VoIP, excessive delay causes noticeable quality degradation such as conversation overlap, talker echo, and unnatural pauses. The key trade-off is: a larger buffer handles more jitter but at the cost of higher latency. Options A and B are incorrect because delay does not decrease. Option C is incorrect because the buffer absorbs jitter rather than increasing it.

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