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

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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:

1. You have a Cisco Unified Border Element configured to provide H.323 to SIP interworking. Which command will verify that you have a single H.323 and a single SIP call leg when the call is placed?

A) show dialpeer voice
B) show call active voice
C) debug voip ipipgw
D) debug voice dialpeer

2. Calculate how many IP phone calls can be sent across a 64 kbps Frame Relay link that uses the
G.729 codec being sampled 50 times a second, 20 bytes a sample, and has 6 bytes of Frame Relay header overhead with no checksum and uses header compression.

A) 4
B) 5
C) 3
D) 7

3. Which three factors must be considered when calculating the total bandwidth of a VoIP call, in order to avoid voice quality issues? (Choose three.)

A) CRC usage
B) capacity of network links
C) data-link overhead
D) codec size
E) sample size

4. What are two advantages of deploying dual VLANs on an access layer switch that connects to an IP phone? (Choose two.)

A) It is typically used for IP phones that are not Cisco IP phones, IP softphones, or when Cisco IP phones or other Cisco voice devices (such as the Cisco VG248 Analog Phone Gateway) do not support PCs to be connected to them.
B) Implementing dual VLANs allows you to connect two devices that are in different VLANs to a single switch port.
C) Dual VLANs allow for the logical separation of data and voice traffic, which allows the network to process these two traffic types individually.
D) There are no advantages if a Cisco IP phone has a PC attached. Both the voice and data services should be in the same VLAN.
E) This is the default state when an IP phone is connected to an unconfigured Cisco Catalyst switch.

5. Refer to the exhibit.

Callers dial 0 to reach an outside line. When they try to place calls to directory services (322) or services (422), they hear the reorder tone. What needs to be edited in the dial peer to allow these calls to complete successfully?

A) The destination pattern needs to be edited so that the first digit that is matched is a 1 and the forward-digits all command needs to be added to the dial peer.
B) A "prefix 1" statement needs to be added to the dial-peer configuration.
C) The destination pattern needs to be edited so that the first digit that is matched is a 0 and the forward-digits all command needs to be added to the dial peer.
D) The destination pattern needs to be edited so that the first digit that is matched is a 0.
E) The destination pattern needs to be edited so that the first digit that is matched is a 0 and the forward-digits 3 command needs to be added to the dial peer.
F) The destination pattern is incorrect. It needs to start with a 9.
G) The forward-digits all command needs to be applied to the dial peer.

Solutions: