352-001 Question #730: Real Exam Question with Answer & Explanation

The correct answer is D: The overall transport delay increases and quality issues can occur. 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 tran

Question

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

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

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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