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Exam 300-101 topic 1 question 448 discussion

Actual exam question from Cisco's 300-101
Question #: 448
Topic #: 1
[All 300-101 Questions]

Which IP SLA operation requires Cisco endpoints?

  • A. UDP Jitter for VoIP
  • B. ICMP Path Echo
  • C. ICMP Echo
  • D. UDP Jitter
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Suggested Answer: A 🗳️
With the addition of real-time traffic (ie: VoIP), the focus shifts not just in the reliability of the network, but also on the delays involved in transmitting the data. Real- time traffic is delay sensitive. For Voice data, packet loss is manageable to some extent, but frequent losses impair communication between endpoints.
The UDP jitter operation is the most popular operation because the user can obtain packet loss, jitter and latency from one operation. This also includes unidirectional measurements as well. The Jitter operation is designed to measure the delay, delay variance and packet loss in IP networks by generating active
UDP traffic. It sends N packets, each of size S, from source router to a target router (which requires Cisco IOS IP SLAs responder enabled) each T milliseconds apart. All these parameters are user configurable.
Reference:
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mt-book/sla_udp_jitter.pdf

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Bastex
5 years, 10 months ago
Yes, A https://www.cisco.com/en/US/technologies/tk648/tk362/tk920/technologies_qas0900aecd8017bd5a.html
upvoted 2 times
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