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Exam 300-430 topic 1 question 38 discussion

Actual exam question from Cisco's 300-430
Question #: 38
Topic #: 1
[All 300-430 Questions]

Which statement about the VideoStream/Multicast Direct feature is true?

  • A. IP multicast traffic is reliable over WLAN by default as defined by the IEEE 802.11 wireless multicast delivery mechanism.
  • B. Each VideoStream client acknowledges receiving a video IP multicast stream.
  • C. It converts the unicast frame to a multicast frame over the air.
  • D. It makes the delivery of the IP multicast stream less reliable over the air, but reliable over Ethernet.
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Suggested Answer: B 🗳️
Reference:
https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-1/configuration-guide/b_cg81/multicast_broadcast_setup.html
by Sorvahr at Oct. 19, 2020, 10:51 a.m.

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Sorvahr
6 months, 2 weeks ago
Media Stream The IEEE 802.11 wireless multicast delivery mechanism does not provide a reliable way to acknowledge lost or corrupted packets. As a result, if any multicast packet is lost in the air, it is not sent again which may cause an IP multicast stream unviewable. The Media Stream (formerly VideoStream) feature makes the IP multicast stream delivery reliable over the air, by converting the multicast frame to a unicast frame over the air. Each Media Stream client acknowledges receiving a video IP multicast stream.
upvoted 4 times
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Sorvahr
6 months, 2 weeks ago
Answer is correct
upvoted 3 times
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