Cisco Voice over IP (CVOICE) : 642-436 Exam
642-436 CVOICE
Cisco Voice over IP
Exam Number: 642-436
Associated Certifications: CCVP
Duration: 75 minutes (60 – 70 questions)
Available Languages: English
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Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 642-436 CVOICE Cisco Voice over IP is the exam associated with the CCVP certification. This exam tests a candidate’s knowledge of the foundational elements of VOIP calls, and the description of dial plans, and the implementation of gateways, gatekeepers and IP-IP gateways. Candidates can prepare for this exam by taking the CVOICE Cisco Voice over IP course.
Exam Topics
The following topics are general guidelines for the content likely to be included on the Remote Access exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.
Describe the components of a gateway
Describe the function of gateways
Describe DSP functionality
Describe the different types of voice ports and their usage
Describe dial peer types
Describe codecs and codec complexity
Describe a dial plan
Describe a numbering plan
Describe digit manipulation
Describe path selection
Describe calling privileges
Describe call coverage
Describe the basic operation and components involved in a VoIP call
Describe VoIP call flow
Describe RTP, RTCP, cRTP, and sRTP
Describe H.323
Describe MGCP
Describe SCCP
Describe SIP
Identify the appropriate gateway signaling protocol for a given situation
Describe voice quality considerations
Choose the appropriate codec for a given situation
Implement a gateway
Describe the gateway call routing process
Configure analog voice ports
Configure digital voice ports
Describe considerations for PBX integration
Configure dial-peers
Configure hunt groups and trunk groups
Configure digit manipulation
Configure calling privileges
Verify dial-plan implementation
Implement fax and modem support on a gateway
Configure a gateway to provide DTMF support
Describe the function and interoperation of gatekeepers within an IP Communications network
Describe the function and types of gatekeepers
Describe the interoperation of devices with a gatekeeper
Describe gatekeeper signaling
Describe Dynamic Zone Prefix Registration with a gatekeeper
Describe gatekeeper redundancy
Implement a gatekeeper
Configure devices to register with a gatekeeper
Configure gatekeeper to provide dial-plan resolution
Configure gatekeeper to provide call admission control
Verify gatekeeper operation
Implement an IP-to-IP gateway
Describe the IP-to-IP gateway features and functionality
Configure gatekeeper to support an IP-to-IP gateway
Configure IP-to-IP gateway to provide address hiding
Configure IP-to-IP gateway to provide protocol and media interworking
Configure IP-to-IP gateway to provide call admission control
Verify IP-to-IP gateway implementations
Exam Number/Code: 642-436
Exam Name:Cisco Voice over IP (CVOICE)
“Cisco Voice over IP (CVOICE)”, also known as 642-436 exam, is a Cisco certification. With the complete collection of questions and answers, Actualtests has assembled to take you through 155 Q&As to your 642-436 Exam preparation. In the 642-436 exam resources, you will cover every field and category in CCVP helping to ready you for your successful Cisco Certification.
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QUESTION 11:
Using Cisco Unified Communications Manager Express, what four steps are necessary to
implement COR? (Choose four.)
A. Define COR labels.
B. Configure COR lists on voice ports.
C. Configure dial peers and assign COR lists.
D. Assign COR list to ephone-DN.
E. Configure SRST.
F. Configure COR lists.
Answer: A,C,D,F
QUESTION 12:
A telemarketing firm needs to use number translation for incoming and outgoing calls.
They have defined two translation profiles, one for incoming and one for outgoing calls.
What can be used to simplify this task?
A. dial peer
B. source IP group
C. trunk group
D. voice port
E. hunt group
Answer: C
QUESTION 13:
The SJ local zone contains a gatekeeper that controls two gateways, SJ1 and SJ2. Both
gateways provide access to area code 408. Which two command strings should be
entered into the gatekeeper to give the SJ2 gateway priority over the SJ1 gateway?
(Choose two.)
A. zone prefix SJ 408 gw-priority 0 SJ2, 10 SJ1
B. zone prefix SJ 408 gw-priority 10 SJ1
C. zone prefix SJ 408 gw-priority 6 SJ1
D. zone prefix SJ 408 gw-priority 6 SJ2
E. zone prefix SJ 408 gw-priority 6 SJ1, 10 SJ2
F. zone prefix SJ 408 gw-priority 10 SJ2
Answer: C,F
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QUESTION 14:
What is the most common E&M type used outside North America?
A. Type III
B. Type I
C. Type II
D. Type V
E. Type IV
Answer: D
QUESTION 15:
Which statement is true about MGCP?
A. Call completion is always shared, with some intelligence on the endpoint, some on the
call agent.
B. Endpoints may act alone or cooperate with call agent to complete calls.
C. Endpoints always take all actions to complete calls.
D. Call agents order and direct each step of call completion for the endpoints.
Answer: D
QUESTION 16:
Which dial-peer command can set the parameters that search through a series of dial
peers for a destination that is not in use?
A. distribute
B. request
C. circulate
D. rotary
E. hunt
F. query
Answer: E
QUESTION 17:
What is the E.164 standard?
A. national numbering plan
B. dial plan
C. private numbering plan
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D. international public telecommunications numbering plan
Answer: D
QUESTION 18:
Which option is true concerning the MGCP call agent?
A. manages all aspects of the call and voice stream
B. acts only as a recorder of call details
C. provides only call signaling and call setup
D. monitors the quality of each call after setup
Answer: C
QUESTION 19:
Which best defines an ACD?
A. a telephone system that switches calls between users on local lines
B. a telephone system that responds to a caller with a voice menu and helps to
appropriately connect the call
C. a telephone system that is connected to the exchange to provide conventional voice
services to several subscribers
D. a local company that provides phone capability and distribution from the phone
company’s central office
Answer: B
QUESTION 20:
Which two statements describe the purpose of the technology prefix? (Choose two.)
A. Technology prefixes are prepended to the destination address by the gateway.
B. Technology prefixes must always be configured on gateways.
C. Technology prefixes are configured on gateways to indicate to the gatekeeper whether
they support voice or video.
D. Technology prefixes have to be unique on each gateway.
E. Technology prefixes are used to identify different types or classes of gateways.
Answer: A,E
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