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Unified Communications Architecture and Design Exam

Exam Number: 642-415
Associated Certifications: Cisco IP Telephony Design Specialist
Duration: 90 minutes (35 -45 questions)
Available Languages: English
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Exam Description Exam Topics Recommended Training Additional Resources
Exam Description
The 642-415 UCAD Unified Communications Architecture and Design exam is the exam associated with the Cisco IP Telephony Design Specialist certification. This exam tests a candidate’s knowledge of technical issues surrounding the design of Voice over Data network and explains a methodology that brings order to approaching the problems faced by planners and designers, including assessment of the current network, Cisco methodology for implementing Voice over Data networks, and how to design sustainable and appropriate implementations. Candidates can prepare for this exam by taking the UCAD Cisco Unified Communications Architecture and Design 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.

Determine the relevant critical business and technical needs in order to develop a Cisco Unified Communications design framework
Determine which business considerations are relevant to a Call Control design
Determine which technical considerations are relevant to a Call Control design

Determine the appropriate deployment model to meet Cisco Unified Communications design requirements
Recognize the characteristics and limitations of a single-site Call Control deployment
Recognize the characteristics and limitations of a multi-site centralized processing Call Control deployment
Recognize the characteristics and limitations of a multi-site distributed / hybrid processing Call Control deployment
Recognize the characteristics and limitations of distributed cluster Call Control deployment

Design a Cisco Unified Communications Manager cluster
Determine Cisco Communications Manager redundancy model to meet design requirements
Determine cluster services necessary to meet requirements for a given Cisco Unified Communications Manager cluster, including TFTP, MoH, CTI Manager, and Voice Media streaming application
Determine hardware requirements for a given Cisco Unified Communications Manager cluster
Determine when an LDAP integration is required

Design the dial plan to support Cisco Unified Communications requirements
Explain the benefits of hierarchical and scalable numbering plans
Explain the issues surrounding Directory Number (DN) design
Explain the different path selection mechanisms available
Explain the different digit manipulations available
Explain the mechanisms used to enable calling privileges
Explain the mechanisms used to provide call coverage
Given a set of design requirements, design a dial plan
Identify the requirements for provisioning emergency services in an IP telephony environment

Design a LAN topology to support voice and data on a converged Cisco Unified Communications network
Design a highly available LAN infrastructure, capable of supporting voice and basic data requirements
Identify PoE considerations that impact hardware selection
Describe how DHCP, DNS, and NTP services impact LAN topology design
Select appropriate hardware to meet LAN design requirements

Design a WAN topology to support voice on a converged Cisco Unified Communications network
Determine voice bandwidth requirements for a given Busy Hour Call Attempts
Identify hardware and software requirements for remote survivability in a centralized deployment
Select appropriate hardware to meet WAN design requirements
Describe the interrelationship between WAN topology and voice services

Design connectivity for off cluster destinations
Determine how offnet connectivity issues influence gateway hardware and protocol selection
Select appropriate hardware to meet offnet design requirements
Determine circuit size based on a given set of calling patterns
Determine type of circuit to meet business and technical requirements
Given a set of business and technical requirements, design PSTN connectivity
Given a set of business and technical requirements, design integration to Legacy Infrastructure components
Given a set of business and technical requirements, determine the type of VoIP trunks needed

Design VoIP network to incorporate gatekeeper services
Identify capabilities and services provided by a gatekeeper
Given a set of business and technical requirements, design a VoIP network to incorporate a gatekeeper for CAC
Given a set of business and technical requirements, design a VoIP network to incorporate a gatekeeper for dial plan resolution
Identify the design requirements that impact the hardware selection for a gatekeeper

Design a QoS policy for a converged network
Describe the purpose of a QoS policy
Given business and technical requirements, develop a QoS policy
Given business and technical requirements, select the appropriate CAC mechanisms
Given business and technical requirements, define the parameters required to support a given CAC mechanism

Design media resources needed to support VoIP design requirements
Given business and technical requirements, design conferencing support
Given business and technical requirements, design transcoding support
Given business and technical requirements, design MTP support
Given business and technical requirements, determine the number of DSPs required
Given business and technical requirements, determine MoH support
Given business and technical requirements, determine media resource allocation

Determine environmental requirements of a Cisco Unified Communications design
Determine physical space requirements for specified hardware
Determine power requirements for specified design
Determine HVAC requirements for specified design

Identify the security concerns relevant to a Cisco Unified Communications design
Determine if an existing customer security plan will influence Cisco Unified Communications design
Identify the potential threats to an IP telephony network
Describe voice security features and their impact
Given business policies and technical considerations, design a security policy for a Cisco Unified Communications solution

Question: 1
Consider the following customer attributes and choose the correct IP telephony call processing model:

- A large campus that spans two PSAP areas
- A single group of buildings connected via fiber optics
- Data VPNs that support multiple contractors and suppliers
- A fully developed three-tier network hierarchy
- Connectivity to two different service providers for Internet access

A. Single-site call processing B. Centralized call processing C. Hybrid call processing
D. Distributed call processing
Answer: A Question: 2
What information is relevant to choosing an IP telephony centralized call processing model?

A. Multiple PRIs to the PSTN
B. A campus of six buildings connected via an ATM backbone
C. Three small regional sales offices located in the three Western time zones
D. Centralized order processing, shipping, and billing for all customer products
E. Connectivity to a single service provider that hosts the company web site and provides for
Internet access
F. A single six-story building with an IDF on each floor and an MDF in the computer room on the second floor
Answer: C Question: 3
In a TDM PBX to Cisco Unified Communications Manager migration, which three things must be verified from the LAN perspective before IP telephony can be deployed? (Choose three.)

A. The type of wiring in the office
B. The number of PSTN connections needed
C. The number of public IP addresses available
D. The amount of rack space in the equipment rack
E. The amount of power that is available to support new LAN switches
Answer: A, D, E Question: 4
The intanet will have three VLAN types to support voice and data traffic; one type for voice, one type for data, and one type for the Cisco Unified Communications Manager cluster. How should
inter-VLAN connectivity by deployed? Drag and drop the type of connectivity to each type of connection. Types of connections may be used more than once.

Exam Name: Unified Communications Architecture and Design
Exam Type: Cisco
Exam Code: 642-415 Total Questions: 58

Answer:

Question: 5
Ajax wants to ensure that their employees are safe and that they comply with the law. What are four general E911 responsibilities of an enterprise telephony system? (Choose four.)

A. Enable PSAP call-back.
B. Initiate the update of ALI records.
C. Provide a detailed map of all ERLs.
D. Allow conferencing with internal security personnel.
E. Route calls to the appropriate point (on-net or off-net). F. Deliver appropriate calling party number digits to LEC.
Answer: A, B, E, F Question: 6
What are two conferencing guidelines for a single-site deployment? (Choose two.)

A. Use hardware conferencing only for small deployments
B. If available, configure DSPs for flex-mode when there are multiple codec types in use.
C. Group any conferencing resources into MRGLs based on their location, to manage Call
Admission Control.

Exam Name: Unified Communications Architecture and Design
Exam Type: Cisco
Exam Code: 642-415 Total Questions: 58

D. Make certain that Meet-Me and Ad-Hoc conference resources each account for a minimum of
5% of the user base.
Answer: B, D Question: 7
Ajax needs to provide technical support outside of normal operating hours. They would like to deploy a small test call center to develop the skills necessary to provide phone, chat, and e-mail
support. Ajax wants to start with five agents. Which two connection types would be applicable for
use with the planned contact center? (Choose two.)

A. PRI B. CAS C. E&M D. QSIG E. POTS
Answer: A, B Question: 8
Indicate whether T1s orE1s are available in your area. (Note: If both are available, choose the one with which you are most familiar.)

A. T1
B. E1

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Recommended Training about 642-415 exam PDF
The following courses are the recommended training for 642-415 exam PDF.
642-415 Q & A with Explanations
642-415 Audio Exam
642-415 Study Guide
642-415 Preparation Lab

Exam Number/Code: 642-415
Exam Name: Unified Communications Architecture and Design

“Unified Communications Architecture and Design”, also known as 642-415 exam, is a Cisco certification.
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Questions and Answers : 58 Q&As
Updated: May 6th , 2008
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