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Exam 200-301 All Questions

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Exam 200-301 topic 1 question 599 discussion

Actual exam question from Cisco's 200-301
Question #: 599
Topic #: 1
[All 200-301 Questions]

How does QoS optimize voice traffic?

  • A. by reducing bandwidth usage
  • B. by reducing packet loss
  • C. by differentiating voice and video traffic
  • D. by increasing jitter
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️

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RougePotatoe
Highly Voted 2 years, 8 months ago
Selected Answer: B
Key guidelines are Delay one way: 150ms or less Jitter: 30ms or less Loss: 1% or less From the official cert guide vol 2 Ch11.
upvoted 11 times
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Bingchengchen236
Highly Voted 2 years ago
I choose C, because for voice traffic, usually UDP is used at transport layer, and a little bit packet doesn't matter
upvoted 5 times
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546716d
Most Recent 1 month, 1 week ago
Selected Answer: C
C. by differentiating voice and video traffic
upvoted 1 times
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5afcbef
3 months, 4 weeks ago
Selected Answer: B
Trick questions that are this close should be banned. Designed to make you fail.
upvoted 1 times
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Joshua25
8 months, 4 weeks ago
Selected Answer: C
C describes class-based differentiation of traffic. It can use various methods to achieve the expected results, such as low loss, low delay, low jitter etc. B is only talking about one aspect. Therefore C is a better option.
upvoted 1 times
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Simrankoor
9 months ago
Option c is more logical
upvoted 1 times
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kyut99
1 year, 4 months ago
I'd say C
upvoted 2 times
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a67c04a
1 year, 5 months ago
Selected Answer: C
It´s C
upvoted 3 times
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lxxxxxxxxx
1 year, 8 months ago
Packet loss is acceptable that is why it uses udp and also uses platinum Qos
upvoted 2 times
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NewJeans
1 year, 9 months ago
Selected Answer: C
Don't think too much. the question is about QoS which can prioritize voice traffic over any other traffics. Please see the following article: https://www.nextiva.com/blog/voip-qos.html
upvoted 2 times
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NewJeans
1 year, 9 months ago
Don't think too much. the question is about QoS which can prioritize voice traffic over any other traffics. Please see the following article: https://www.nextiva.com/blog/voip-qos.html
upvoted 1 times
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Elmasquentona963
1 year, 10 months ago
Selected Answer: C
A Prioritization Strategy for Data, Voice and Video: <omitted> 4. Put voice in a separate queue from video so that the policing function applies separately to each. <omitted> Source: CCNA 200-301 Official Cert Guide, Volume 2 (pg. 245)
upvoted 3 times
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Yinxs
1 year, 10 months ago
Selected Answer: C
The foundation of Qos is classificaiton.
upvoted 2 times
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Liquid_May
1 year, 10 months ago
Selected Answer: B
I would go with B, as RoguePotatoe stated, voice traffic can only function with a 1% packet loss or less, so it makes sense to avoid packet loss. Besides that, since video and voice traffic are both traffic types that can't afford delays or packet loss, I don't see how differentiating them would help regarding voice traffic.
upvoted 4 times
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mda2h
1 year, 11 months ago
Selected Answer: B
I'll go with B, since the question only talks about voice. Besides, if why stop at differentiate voice and video, why not data traffic as well?
upvoted 2 times
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Olebogeng_G
2 years ago
It's C. Packet loss is tolerable.
upvoted 2 times
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bisiyemo1
2 years, 2 months ago
Selected Answer: B
B is very very correct.
upvoted 2 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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