N10-005 · Question #260
Which of the following performance optimization techniques would be MOST beneficial for a network-wide VoIP setup? (Select TWO).
The correct answer is B. Traffic shaping E. Quality of service. Traffic shaping retains excess packets in a queue and then schedules the excess for later transmission over increments of time. The result of traffic shaping is a smoothed packet output rate. QoS (Quality of Service) is a major issue in VOIP implementations. The issue is how to…
Question
Which of the following performance optimization techniques would be MOST beneficial for a network-wide VoIP setup? (Select TWO).
Options
- AProxy server
- BTraffic shaping
- CCaching engines
- DLoad balancing
- EQuality of service
How the community answered
(25 responses)- A12% (3)
- B80% (20)
- C4% (1)
- D4% (1)
Explanation
Traffic shaping retains excess packets in a queue and then schedules the excess for later transmission over increments of time. The result of traffic shaping is a smoothed packet output rate. QoS (Quality of Service) is a major issue in VOIP implementations. The issue is how to guarantee that packet traffic for a voice or other media connection will not be delayed or dropped due interference from other lower priority traffic. Things to consider are: Latency: Delay for packet delivery Jitter: Variations in delay of packet delivery Packet loss: Too much traffic in the network causes the network to drop packets Burstiness of Loss and Jitter: Loss and Discards (due to jitter) tend to occur in bursts
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