Which network issue causes a delay in VoIP response?
When a user makes a VoIP phone call and finishes speaking, the user experiences a delay in hearing a response. Which of the following should the network engineer check?
Community Votes
78% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
This question tests the difference between latency and jitter; the trap is mistaking a fixed delay for jitter, which would be inconsistent delay.
When a VoIP call has a consistent delay in hearing responses, the network engineer should check latency. The community votes for latency (B) but many confuse it with jitter, which is delay variation.
Choosing Jitter (A) is common because VoIP is often associated with jitter, but jitter is variation in delay, not a constant delay as described in the question.
Community Discussion (5 comments)
Comments & Corrections
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Expert Analysis
Why the Answer Is Correct
The scenario describes a "delay" after speaking before hearing a response, which is a fixed time lag. Latency measures the time it takes for a packet to travel from source to destination, so a constant delay indicates high latency. The top-voted comment (5 likes) correctly distinguishes: "latency because it's a consistent delay in voip. if it was all over the place/inconsistent it would be jitter."
Why the Other Options Are Wrong
Jitter (A) is the variation in packet arrival times, not a steady delay; it would cause choppy audio rather than a single pause. Bandwidth (C) affects throughput but not necessarily one-way delay. CRC errors (D) indicate data corruption, which would cause garbled audio, not a response delay.
Community Comment Notes
Community votes strongly favor B (78 vs 22). One comment (2 likes) asks if jitter is correct, reflecting common confusion. Another comment (1 like) explains that latency can be caused by jitter, but the direct issue to check when experiencing a fixed delay is latency. These comments highlight the need to distinguish between delay and delay variation.
Official Reference
Exam Strategy
Read the wording carefully: 'delay' means latency, while 'jitter' would be described as inconsistent or varying delay. On the exam, look for keywords like 'consistent' or 'fixed' to choose latency.