642-437 by Cisco Actual Free Exam Questions And Answers

Question 1

Assuming no cRTP or header compression. How many VoIP G.729 calls can be made simultaneously over a 128-kb/s Frame Relay circuit (Layer 3) if 50 percent of the circuit is dedicated to voice and 50 percent is dedicated to data?

Discussion 0

Correct Answer: A Vote an answer

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Question 2

How many rules does a voice translation profile allow?

A. up to 25

B. up to 15

C. up to 8

D. up to 12

Discussion 0

Correct Answer: B Vote an answer

Question 3

What is a Cisco Voice Gateway feature that enables class of service or calling privileges to be assigned?

A. partition

B. calling search space

C. COR

D. dial peer

Discussion 0

Correct Answer: C Vote an answer

Question 4

Which three call permissions are assigned with the Employee calling privileges? (Choose three.)

A. long distance

B. 911 (emergency)

C. international

D. local

Discussion 0

Correct Answer: A,B,D Vote an answer

Question 5

Which option inside DHCP pool configuration gives a TFTP server to a Cisco IP phone?

A. option 176

B. option 150

C. option 82

D. option 110

Discussion 0

Correct Answer: B Vote an answer

Question 6

DRAG DROP
Assume a SIP voice network. Drag each characteristic to the type of SIP call setup the characteristics best describes.

Discussion 0

Correct Answer:

Cisco 642-437 Exam
Explanation:

Direct call setup:
+
Nonscalable
+
UA must keep data on large number of destinations
+
Relies on cached information to resolve addresses Redirect Server Call Setup:
+
Server reports back to a UA with destination coordinates Proxy Server Call Setup:
+
Most dynamic address resolution capability
+
All setup messages to through server
+
UA incapable of establishing its own sessions
http://www.cisco.com/en/US/tech/tk652/tk701/technologies_configuration_guide_chapter09186a00 80163444.html

Question 7

When you implement the tail-end hop-off path-selection strategy, which task should you complete first?

A. Define the VoIP outbound digit manipulation.

B. Define the outbound VoIP dial peer.

C. Define the inbound VoIP dial peer.

D. Define the VoIP inbound digit manipulation.

Discussion 0

Correct Answer: A Vote an answer

Question 8

What are the PHBs that DiffServ use?

A. resource reservation and admission control

B. AF and EF PHBs

C. AF, EF, and CS PHBs

D. default, AF, EF, and CS PHBs

E. default, AF, and EF PHBs

Discussion 0

Correct Answer: D Vote an answer

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Question 9

What is the total number of differentiated services code point bits in the DiffServ field?

A. 2

B. 8

C. 6

D. 4

Discussion 0

Correct Answer: C Vote an answer

Question 10

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

A. 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.

B. Dual VLANs allow for the logical separation of data and voice traffic, which allows the network to process these two traffic types individually.

C. 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.

D. This is the default state when an IP phone is connected to an unconfigured Cisco Catalyst switch.

E. Implementing dual VLANs allows you to connect two devices that are in different VLANs to a single switch port.

Discussion 0

Correct Answer: B,E Vote an answer

Question 11

What are the three acceptable values for one-way delay, jitter, and packet loss in a VoIP network? (Choose three.)

A. 0-150 ms for delay

B. 1 packet loss

C. 30 ms for jitter

D. 1 percent packet loss

E. 20 ms for jitter

F. 0-400 ms for delay

Discussion 0

Correct Answer: C,D,F Vote an answer

Question 12

When a Cisco Unified Border Element is deployed to support RSVP-based CAC, which media flow method is required?

A. RSVP-based CAC requires Cisco Unified Border Element to use media flow-through.

B. RSVP-based CAC only supports media flow-around.

C. RSVP-based CAC can be supported with either media flow-through or media flow-around if the Cisco Unified Communications Manager is configured as an RSVP agent.

D. The Cisco Unified Border Element does not have to participate in the RSVP message exchange and will pass RSVP messages through unchanged using media flow-around.

Discussion 0

Correct Answer: A Vote an answer

Question 13

Which debug command can be used to show events specific to the Cisco Unified Border Element gateway?

A. debug ip cube

B. debug ip voip cube

C. debug voip cube events

D. debug voip ipipgw

Discussion 0

Correct Answer: D Vote an answer

Question 14

How are firmware images implemented and which file type describes the contents of the firmware image?

A. Firmware images are implemented as file bundles that are described by a file that ends with a .loads suffix.

B. Firmware images are implanted as firmware groups that are described by a file that has a .cnf suffix.

C. Firmware images are implemented as a file loader group and are described by a file that ends with a .sbn suffix.

D. Firmware images are implemented as individual files that are described by a file that has a .loads suffix.

Discussion 0

Correct Answer: A Vote an answer

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

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