What are two characteristics of voice traffic? (Choose two.)

Question:
What are two characteristics of voice traffic? (Choose two.)

• Voice traffic latency should not exceed 150 ms.
• Voice traffic is unpredictable and inconsistent.
• Voice traffic requires at least 384 kbs of bandwidth.
• Voice traffic consumes lots of network resources.
• Dropped voice packets are not retransmitted.

Explanation: Voice traffic does not consume a lot of network resources, such as bandwidth. However, it is very sensitive to delay and dropped packets cannot be retransmitted. For good voice quality, the amount of latency should always be less than 150 milliseconds.

Exam with this question: CCNA 3 v7 Modules 9 – 12 Exam Answers
Exam with this question: CCNA 4 Chapter 6 Exam Answers

Other case:
What are two characteristics of voice traffic? (Choose two.)

• It is bursty.
• It consumes few network resources.
• It is insensitive to packet loss.
• It can tolerate latency up to 400 ms.
• It is delay sensitive.

Explanation: Voice traffic does not consume much in the way of network resources, such as bandwidth. However, it is very sensitive to delay and dropped packets. For good voice quality, the amount of latency should be less than 150 milliseconds and packet loss less than 1%.

Exam with this question: CCNA 3 v7 Module 9 Quiz - QoS Concepts