Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) : 642-437 exam dump

  • Exam Code: 642-437
  • Exam Name: Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0)
  • Updated: May 29, 2026
  • Q&As: 257 Questions and Answers

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

1. Which command correctly enables a trust of the existing differentiated services code point value coming into a switch?

A) switch(config-mls)#dscp trust
B) switch(config-if)#mls qos trust dscp
C) switch(config-if)#mls dscp trust
D) switch(config-mls)#mls qos trust dscp


2. Which two functions are associated with a voice gateway? (Choose two.)

A) Switches voice channels between connected analog and digital voice circuits
B) Provides voice-messaging services to connected analog and digital voice circuits
C) Interconnects two logically separate VoIP networks
D) Negotiates endpoint capabilities
E) Controls opening and closing of logical channels that are used to carry media streams


3. Which two statements describe ways that AutoQoS VoIP configuration is applied on a Cisco catalyst switch? (Choose two.)

A) The auto qos voip trust command is applied to each interface.
B) The auto qos voip cisco-phone command is applied to each interface.
C) The auto qos voip command is applied to each interface.
D) The auto qos voip command is applied globally in the switch.


4. A small office needs to provide outbound dialing and in-bound DID without the cost of a T1 circuit. All signaling is loop start. Which analog port configuration will support these requirements?

A) voice-port 0/1/0 signal did loop-start ! dial-peer voice 1 pots incoming called-number . ! dial-peer voice 90 pots destination-pattern 9T port 0/1/0
B) voice-port 0/0/0 description fxs-did signal did loop-start ! voice-port 0/1/0 description fxo signal loop-start ! dial-peer voice 1 pots incoming called-number . direct-inward-dial port 0/0/0 ! dial-peer voice 90 pots destination-pattern 9T port 0/1/0
C) voice-port 0/0/0 signal did loop-start ! dial-peer voice 1 pots incoming called-number . direct-inward-dial ! dial-peer voice 90 pots destination-pattern 9T port 0/0/0
D) voice-port 0/0/0 signal loop-start ! voice-port 0/1/0 signal loop-start ! dial-peer voice 1 pots incoming called-number T direct-inward-dial ! dial-peer voice 90 pots destination-pattern 9T port 0/1/0


5. DRAG DROP
All calls over the IP WAN use G.729. IP phones A and B use Cisco Unified Communications Manager Express.
IP Phone A is on a call with IP Phone B.
IP Phone A conferences in Analog Phone C with IP Phone B.
Software conference resources are not being used.
Drag the appropriate DSP resource for each gateway from the list to the correct locations in the graphic so the call can be completed.


Solutions:

Question # 1
Answer: B
Question # 2
Answer: A,E
Question # 3
Answer: A,B
Question # 4
Answer: B
Question # 5
Answer: Only visible for members

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