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Cisco 642-437 Exam Syllabus Topics:

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

Question 1

When a Cisco Unified Border Element connects two VoIP streams using flow-around media, which of the following options describes the components of the call that flow around and the components that flow through the device?

A. Call signaling flows through and call media flows around the device.
B. The initial call-signaling traffic flows through the device to initiate the call and then all subsequent calls flow around the device.
C. Call media flows through and call signaling flows around the device.
D. All security information flows through the Cisco Unified Border Element, and all call signaling and RTP flows around the device.

Question 2

Which command should you use when checking for phone registration status or verifying button assignments?

A. show telephony-service
B. show IP phone
C. show ephone
D. show ephone-dn 9

Question 3

Refer to the exhibit.

Cisco 642-437 Exam
When an international call to 90114989531212001 is placed from extension 2001, which of the following statements is true?

A. The call will succeed because the incoming COR list has the highest priority, by default, when no incoming COR list is applied.
B. The call will fail because no incoming COR list is applied.
C. The call will succeed because the incoming COR list is a superset of the outgoing COR list.
D. The call will fail because the incoming COR list is not a superset of the outgoing COR list

Question 4

How does LLQ ensure that voice traffic is always expedited?

A. The LLQ strict priority queue allows delay-sensitive data such as voice to be dequeued and sent first (before packets in other queues are dequeued), giving delay-sensitive data preferential treatment over other traffic.
B. LLQ adds WRED to CBWFQ. This allows delay-sensitive data such as voice to be dequeued and sent first.
C. The strict priority queue has a higher weight than the queues in CBWFQ. This weight allows the delay-sensitive data such as voice to be dequeued and sent first.
D. LLQ uses CBWFQ to prioritize voice traffic and by dequeuing the voice packets so they can be handled first.

Question 5

Which three methodologies are specific types of QoS used on a 512-kb/s point-to-point IP WAN link? (Choose three.)

A. FRF.12
B. RSVP
C. Multilink PPP
D. header compression
E. LLQ

Solutions: