Exam 350-801 topic 1 question 294 discussion

End-to-End QoS Network Design: Quality of Service in LANs, WANs, and VPNs Chapter 2: QoS Design Overview

Interactive-Video When provisioning for Interactive-Video (video conferencing) traffic, the following guidelines are recommended: Interactive-Video traffic should be marked to DSCP AF41; excess videoconferencing traffic can be marked down by a policer to AF42 or AF43. Loss should be no more than 1 percent. One-way latency should be no more than 150 ms. Jitter should be no more than 30 ms. Assign Interactive-Video to either a preferential queue or a second priority queue (when supported); when using Cisco IOS LLQ, overprovision the minimum-priority bandwidth guarantee to the size of the videoconferencing session plus 20 percent. (For example, a 384-kbps videoconferencing session requires 460 kbps of guaranteed priority bandwidth.)

Interactive-Video traffic should be marked to DSCP AF41; excess videoconferencing traffic can be marked down by a policer to AF42 or AF43. Loss should be no more than 1 percent. One-way latency should be no more than 150 ms. Jitter should be no more than 30 ms. Source: https://www.ciscopress.com/articles/article.asp?p=357102&seqNum=2

https://www.ciscopress.com/articles/article.asp?p=357102&seqNum=2 Streaming-Video When addressing the QoS needs of Streaming-Video traffic, the following guidelines are recommended: Streaming-Video (whether unicast or multicast) should be marked to DSCP CS4, as designated by the QoS Baseline. Loss should be no more than 5 percent. Latency should be no more than 4 to 5 seconds (depending on the video application's buffering capabilities). There are no significant jitter requirements.

Streaming-Video When addressing the QoS needs of Streaming-Video traffic, the following guidelines are recommended: Streaming-Video (whether unicast or multicast) should be marked to DSCP CS4, as designated by the QoS Baseline. Loss should be no more than 5 percent. https://www.ciscopress.com/articles/article.asp?p=357102&seqNum=2

A is correct

A is the answer according to this. https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-video/212134-Video-Quality-of-Service-QOS-Tutorial.html Search for "streaming"