Cisco 642-437 Actual Free Exam Questions & Community Discussion
Voice packets are arriving at a destination with a variance of between 20 and 50 milliseconds. If the jitter buffer has a capacity of 30 milliseconds, what is the impact on the audio at the receivers IP phone? Voice packets are arriving at a destination with a variance of between 20 and 50 milliseconds. If the jitter buffer has a capacity of 30 milliseconds, what is the impact on the audio at the receivers IP phone?
Correct Answer: B
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Which version of Cisco Unified Communications Manager Express is recommended that is supported on endpoints running Cisco IOS 15.0(1)M?
Correct Answer: C
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If a centralized solution has to be implemented on multiple-equipment vendors devices, which signaling protocol should be used?
Correct Answer: D
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A TFTP server is configured with the IP address 10.10.10.150. Which command should you enter in the DHCP pool configuration mode to configure a client to use the defined TFTP server?
Correct Answer: D
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Which voice quality issue is described as voice clipping or skips?
Correct Answer: F
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Which command should you use when checking for phone registration status or verifying button assignments?
Correct Answer: B
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Which calling privileges command can be used to assign a specific configuring class of restriction list named "restrict" incoming on a dial peer?
Correct Answer: B
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Which of the available quality of service models offers the greatest amount of scalability while maintaining service quality?
Correct Answer: B
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At what point in a VoIP network are the existing class of service or differentiated services code point values considered valid and are used throughout the rest of the network?
Correct Answer: B
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The administrator has added a new ephone-dn and a new ephone to the Cisco Unified Communications Manager Express system, but the new phone will not register with the system. If other phones are operating properly, which of the following should the administrator do first to try to resolve the issue?
Correct Answer: D
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Which type of delay is caused by the distance that signal must travel in fiber- or copper-based networks?
Correct Answer: A
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In which situation would an administrator configure telephony services, but not configure any individual ephones?
Correct Answer: C
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