The following questions test your knowledge of topics explained in this chapter. You can find the answers to the questions in Appendix A, “Answers to Chapter Review Questions.”
1. | Which two functions does a gateway provide?
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2. | Which protocol provides out-of-band control information for RTP-based call flows?
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3. | A company has four sites and wants to implement VoIP at all of them. The requirements include implementing gateway devices with no call-processing intelligence at the remote sites, controlling all call traffic from the headquarters location, and having a single point of CAC. Which network architecture is appropriate to meet these requirements?
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4. | In which of the following situations would a gateway be required?
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5. | Which function best describes a numbering plan?
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6. | Which worldwide prefix scheme was developed by the ITU to standardize numbering plans?
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7. | Which three factors must be considered when calculating the total bandwidth of a VoIP call?
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8. | What is the overhead for Frame Relay?
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9. | What is the equivalent of one Erlang?
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10. | Which feature provides transport security for a VoIP network?
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