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Exams210-060Questions#147
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210-060 · Question #147

210-060 Question #147: Real Exam Question with Answer & Explanation

The correct answer is D: network routers and switches. When an entire department reports poor voice quality simultaneously, the shared network infrastructure - routers and switches - is the first fault domain to investigate because a problem there affects all users on that segment.

Question

An entire department is reporting frequent calls with poor voice quality. Which fault domain should be investigated first?

Options

  • AIP phone
  • BCisco Unified Communications Manager Media Resources
  • CCisco Unified Communications Manager SIP Trunks
  • Dnetwork routers and switches

Explanation

When an entire department reports poor voice quality simultaneously, the shared network infrastructure - routers and switches - is the first fault domain to investigate because a problem there affects all users on that segment.

Common mistakes.

  • A. An IP phone hardware or configuration issue would typically affect only that individual user, not an entire department simultaneously.
  • B. CUCM media resources such as transcoders and MTP resources are involved only in specific call scenarios (codec mismatches, SRTP) and would not cause widespread departmental voice degradation.
  • C. SIP trunk problems affect calls traversing that trunk to or from external destinations, not the internal voice quality experienced by an entire department on local or on-net calls.

Concept tested. Fault domain isolation for department-wide voice quality degradation

Reference. https://www.cisco.com/c/en/us/support/docs/voice/ip-telephony-voice-over-ip-voip/14081-voip-qos-trblshtng.html

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