Imagine you're on a video call with your family, and someone else in your house starts downloading a large file. Without QoS, the download might use up all the available bandwidth, causing your video call to become choppy or freeze.
With QoS, the network recognizes that the video call is more important and gives it priority. This ensures your call remains clear and stable, even while the download is happening.
QoS is about managing network traffic to ensure that the most important data gets delivered reliably and with minimal delay, even when the network is busy. It's like having a VIP lane for critical data.
Quality of Service (QoS) is most critical for real-time voice and video streams. These types of traffic are very sensitive to delays (latency), jitter (variation in delay), and packet loss. Even small disruptions can significantly degrade the user experience, leading to choppy audio, distorted video, or dropped calls.
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B) While speed is desirable for these transfers, they are less sensitive to minor delays. A few extra seconds or even minutes to complete a large file transfer is usually acceptable.
C) Web browsing can tolerate some latency. While a fast page load is preferred, small delays are generally not a major issue.
D) Email is inherently asynchronous. Delays of a few seconds or even minutes are typically not noticeable to the user.