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Last Updated: Oct 07, 2026

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Cisco 642-437 Exam Syllabus Topics:

SectionObjectives
Cisco Unified Border Element (CUBE)- CUBE features and configuration
  • 1. SIP trunks and interworking
    • 2. Media flow and protocol interworking
      Voice Gateways and Call Routing- Gateway implementation and configuration
      • 1. Dial peers and dial plan implementation
        • 2. Voice gateway interfaces and DSPs
          VoIP Fundamentals- Voice over IP basics
          • 1. VoIP components and operation
            • 2. Voice signaling protocols (H.323, SIP)
              Troubleshooting- Troubleshooting voice and QoS issues
              • 1. Common voice call issues
                • 2. Diagnostics and show/debug commands
                  Cisco Unified Communications Manager Express- CUCME configuration
                  • 1. Call handling and features
                    • 2. Endpoint addressing and ephone setup
                      Quality of Service (QoS)- QoS mechanisms
                      • 1. AutoQoS and queuing
                        • 2. DiffServ and classification

                          Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:

                          Question #1

                          If a centralized solution has to be implemented on multiple-equipment vendors devices, which signaling protocol should be used?

                          • A. Media Gateway Control Protocol
                          • B. Session Initiation Protocol
                          • C. Skinny Client Control Protocol
                          • D. H.323 protocol
                          Reveal Solution  Discussion  0

                          Correct Answer: D  🗳️

                          Question #2

                          Which command is used to view the COR list?

                          • A. show voip ccapi inout
                          • B. show dial-peer cor
                          • C. show ip interface brief
                          • D. show dial-peer summary
                          Reveal Solution  Discussion  0

                          Correct Answer: B  🗳️

                          Question #3

                          Which three methods are used by a Cisco Unified Border Element to provide network hiding? (Choose three.)

                          • A. Back-to-back user agent, replacing all H.323-embedded IP addressing
                          • B. IP network privacy and topology hiding
                          • C. Media flow-through
                          • D. IP network security boundary
                          • E. RSVP
                          • F. Intelligent IP address translation for RTP flows
                          Reveal Solution  Discussion  0

                          Correct Answer: B,D,F  🗳️

                          Explanation: Only visible for SurePassExams members. You can sign-up / login (it's free).

                          Question #4

                          Which three methods are used by a Cisco Unified Border Element to provide network hiding? (Choose three.)

                          • A. Back-to-back user agent, replacing all SIP-embedded IP addressing
                          • B. media flow-through
                          • C. IP network security boundary
                          • D. IP network privacy
                          • E. RSVP
                          • F. Intelligent IP address translation for RTP flows
                          Reveal Solution  Discussion  0

                          Correct Answer: C,D,F  🗳️

                          Question #5

                          To avoid unnecessary delay for high-priority traffic, on which speed link should you enable the link fragmentation and interleaving feature?

                          • A. less than 1.544 Mb/s
                          • B. less than 2.048 Mb/s
                          • C. less than 512 kb/s
                          • D. less than 768 kb/s
                          Reveal Solution  Discussion  0

                          Correct Answer: D  🗳️

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