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Technology Standards and Protocol for IP Telephony
Download Full Version :
Which two statements accurately describe the G.107 E-Model? (Choose two.)
A. The scale is typically from 1 to 5.
B. The scale is typically from 50 to 94.
C. It is a subjective model for use in transmission planning.
D. It is a computational model for use in transmission planning.
E. It is the numerical average of the voice quality ratings (scores) from all listeners.
Answer: B, D
Click the calculator button. A customer with a low-speed, data - network link between two
locations wants to pass two concurrent VoIP calls between locations. Their top priority is the
best possible voice quality to meet call requirements and network capacity. Typically, which
CODEC should best meet their network requirements?
Which two items factor into VoIP delay, jitter, and packet loss on a QoS-enabled IP network?
A. CODEC selection
B. redundant H.323 gateway
C. signaling protocol selection
D. packetization rate selection
E. 323 gatekeeper placement
Answer: A, D
Which queuing technique services the queues using a round-robin approach to prevent any one
packet source from overusing its share of network capacity?
A. Fair Queuing
B. Priority Queuing
C. Weighted Fair Queuing (WFO)
D. First-In, First-Out (FIFO) Queuing
A customer wants to connect a VoIP gateway from an IP-enabled Private Branch Exchange
(PBX) to its existing Ethernet Layer 2 switch. Internet Telephones will be directly attached to
the Ethernet Layer 2 switch. In this situation using only Layer 2 technology, which two QoS
methods should achieve the best voice quality using QoS prioritization? (Choose two.)
A. Port-based Prioritization
B. Socket-based Prioritization
C. Traffic Separation using VLANs
D. Differentiated Services (DiffServ)
Answer: A, C
Which queuing technique: 1) classifies and places packets into queues according to the
information in the packets and 2) services packets from queues with the most important
information first when congestions occurs?
A. Fair Queuing
B. Priority Queuing
C. Class-Based Queuing (CBQ)
D. Weighted Fair Queuing (WFQ)
Which statement best describes the operation used by an echo canceller to reduce echo in digital
A. It places a large loss (attenuation) in the transmit path when it detects a signal on the receive
B. It calculates an estimate of what the echo will be, and then subtracts this from the actual
C. It develops a mathematical model of the echo that will occur, and then adds this to the
signal in the echo return path.
D. It detects a signal on the incoming or outgoing path, and then switches gain into the other
path to increase the level of any returning signal.
Click the calculator button. Given the following customer network information:
A fractional T1/E1 (384 kbps) is running between two sites.
The data traffic peak usage is 80 kbps.
There are 24 Internet Telephones at each site with five calls expected to be traversing the
T1/E1 WAN link at any one time.
A test across the WAN T1/E1 link shows a one-way delay of 125 ms.
Due to the network architecture calls from the Internet Telephones through the VoIP
gateways are incurring transcoding.
When Internet Telephones communicate with the VoIP gateway for calls traversing the WAN
router, what is the recommended CODEC for them to operate efficiently within the allotted
WAN bandwidth and still provide good voice quality?
A customer is running voice and data traffic between two sites over a WAN. They are planning
to connect VoIP gateways in IP-enabled Private Branch Exchanges (PBXs) to existing Ethernet
Layer 3 switches at each site. In this situation, which QoS method should achieve the best voice
quality using QoS prioritization?
A. Port Prioritization
B. IP Address Prioritization
C. Traffic Separation using VLANs
D. Differentiated Services (DiffServ)
Nortel 920-803 Exam (Technology Standards and Protocol for IP Telephony Solutions) Detailed Information
Nortel delivers an industry-leading global certification programme that sets the standards for designing, installing, and supporting Nortel products and solutions.
Nortel’s Professional Certification Programme provides fast, flexible paths to achieving Nortel Certification, including ‘in class’ segment exams or the ability to complete a certification exam at a Prometric Testing Centre.
Nortel use skills-based exams to test your skills and knowledge, validating your competency on our highly technical products and solutions that encompass Security, Mobility and Mulitmedia Communications.
Nortel Certified Support Specialist (NCSS)
Nortel Certified Support Expert (NCSE)
Nortel Certified Design Specialist (NCDS)
Nortel Certified Design Expert (NCDE)
The Nortel Institute is committed to educating, training, and professional development in the broad and booming field of information technology and telecommunications by developing innovative programs, backed by first-class facilities. The Nortel Institute�s education and training program is designed to respond to current challenges and to anticipate and address future challenges. In additioan, the Institute�s missions in research and development and in strategic analysis enable it to anticipate technological trends and plan training and education programs to prepare people for jobs in new areas.
The Institute designed and obtained approval for the Master of Engineering in Telecommunications program and which began in September 1998. The program graduates 30-35 highly trained experts each year for employment in industry. The Institute offers financial aid to undergraduate and graduate students through the Nortel Institute Scholarship program.
The Institute has also developed training and retraining programs, such as the Executive Development Program, as well as specialized seminars, workshops and forums.
The critical shortage of highly qualified personnel in information technology and telecommunications, including researchers, engineers and technological entrepreneurs;
The rapid rate of change in technology requiring continual retraining and updating of industry personnel, including managers, engineers and executives, as well as decision-makers and policy-makers in a wide range of sectors;
Accelerating technological evolution and convergence that create uncertainty in identifying the skills and education future workers will need for the new jobs, services and industries.
Develop innovative programs, backed by first-class facilities, to fast-track the preparation of new generations for leadership and innovation and to offer retraining and updating for industry and government personnel;
Strengthen ties between industry and advanced education to give students hands-on experience and to enhance research and education opportunities for industry staff;
Identify technology trends in order to direct education and training resources effectively for future job creation, giving Canada�s economy a technological competitive advantage.
Offer the innovative Master of Engineering in Telecommunications program;
Develop, in consultation with industry, innovative updating and retraining programs, specialized seminars and workshops;
Support initiatives to increase the number of highly qualified graduates in electrical and computer engineering;
Integrate results of strategic analysis of technology trends into education and training program development.
Nortel Education Communication Solutions
With Internet and multimedia technology playing an increasingly important role in education at every level, laying the right communications foundation is essential for educational establishments of all types.
At 1st Communications, we understand the communications and networking needs of your educational institution. Without voice and data communications technology, it would be impossible to operate in this day and age. You would not be able to construct collaborative projects, run intranets etc.
1st Communication's Nortel Solutions address the key issues for educational institutions, namely connectivity, mobility, security and advanced voice services. With our Nortel Solutions, you will be able to explore mobile and remote learning, introduce multimedia communications, take advantage of communication convergence and much, much more.
1st Communications uses the following Nortel Business Solutions and Nortel Technical Solutions to provide a complete service to the Education Sector:
Nortel Business Solutions
Increase your Productivity
Increase your Revenues
Streamline your Costs
Improve your Mobility
Increase Customer Loyalty, Care & Retention
Ease of Growth
Simplify your Administration
Protect your Investment
Get Greater Security
Nortel Technical Solutions
Computer Telephony Interaction
Interactive Voice Response
Article by ArticleForge
Looking for Real Exam Questions for IT Certification Exams! We guarantee you can pass any IT certification exam at your first attempt with just 10-12 hours study of our guides. Our study guides contain actual exam questions, you will get word to word same on your actual test; accurate answers with detailed explanation verified by experts and all graphics and drag-n-drop exhibits shown just as on the real test. To test the quality of our guides, you can download the one-fourth portion of any guide fromArticle by ArticleForge
Certification Watch: New Citrix Beta Exams Available
The beta versions of two new Citrix exams are available at no charge for a limited time.
Exam 1Y1-223 -- Citrix MetaFrame Presentation Server 3.0: Enterprise Edition Administration will be available through Aug. 6. It contains 136 items based on Citrix MetaFrame Presentation Server 3.0, and has a 2.5-hour time limit.
Exam 1Y1-722 -- Citrix MetaFrame Secure Access Manager 2.2: Administration is the other test currently in beta. It will be available though July 30. For this second test, items cover the design, installation and maintenance of MetaFrame Secure Access Manager 2.2. There are 181 items and the time limit is 3 hours.
As is usually the case, scores for these beta exams will not be available until after the beta period has been completed, test results analyzed, and a passing score established. Testing is through Prometric.
CompTIA Extends Mix and Match Period for A+
The Computing Technology Industry Association (CompTIA) has extended the option to mix and match exams referencing the old (2001) and new (2003) objectives for A+ certification through Sept. 30. This option originally was slated to expire June 30. For more on A+ certification, GoCertify's A+ page.
CIW Foundations Exam to be Updated, New Objectives Available
The CIW program has released new objectives and study material for its CIW Foundations exam. The current v4 Foundations exam and courseware is slated to retire in December.
The program that allowed individuals certified under CompTIA's i-Net+ program to become CIW Associates for a fee will also be retired at that time. The new v5 version of Foundations is no longer considered equivalent to i-Net+. The v5 Foundations exam is scheduled for release in the fall.
For a list of all CIW designations, see GoCertify's CIW page.
New Convergence Exams Now Available from Nortel
Two new certification exams covering the latest in convergence technologies are now available from Nortel Networks. They replace the VoIP Technology (#920-801) and IP Convergence (#920-802) exams required for the Specialist and Expert certifications in the VoIP and IP Convergence portfolio.
The Technology Standards and Protocols for IP Telephony Solutions exam (#">920-803) is an update to the VoIP Technology exam (#920-801). It replaces the VoIP Technology exam as a requirement for all Specialist certifications in the VoIP portfolio.
The Technology Standards and Protocols for Converged Networks exam (#920-804) is an update to the IP Convergence exam (#920-802). It replaces the IP Convergence exam as a requirement for all Expert certifications in the VoIP portfolio.
Microsoft Certification Count Exceeds 1.5 Million
According to Microsoft's learning Web site, more than 1.5 million Microsoft certifications have been earned since the Microsoft Certified Professional program was established in 1992. That includes 958,242 MCPs (Microsoft Certified Professionals), 11,697 MCSA Microsoft Certified Systems Administrator (MCSA) on Microsoft Windows 2000 titles, and 151,284 Microsoft Certified System Engineer (MCSE) on Microsoft Windows 2000 certifications.
Among the more recent Windows Server 2003 titles, there are 10,013 individuals certified as MCSE on Windows Server 2003, and 18,998 as MCSA on Microsoft Windows Server 2003. There are also over 125,000 MCDBAs (Microsoft Certified Database Administrator and, more than 54,000 MCSDs (Microsoft Certified Solution Developers).
Free IT Career Event to Take Place July 19-26
The 4th Annual IT Career Week will offer the chance to take certification training courses for free online, as well as provide access to a job search engine with nearly 30,000 IT job vacancies. The online event, all IT training titles and job search services are free for registered attendees. GoCertify is proud to once again be a cosponsor of this event.
To register and for detailed information on the event visit the ITCareerWeek Web site.
That's all for this edition of Certification Watch. Please keep your certification news and tips coming to newsgocertifym.
Article by ArticleForge
Certification Watch Volume 7 #19
Written by Anne Martinez
01 December 2004
Certification news regarding Novell's CLP practicum, beta opportunities, and new certifications from Nortel Networks.
Novell CLP Practicum Now Live, Temporarily Free
Individuals who administer a Linux server or network can now certify their expertise through Novell. Although the theoretical basics covered are common to any Linux distribution, the test specifically focuses on the SUSE Linux distribution. Earning Novell's Certified Linux Professional (CLP) designation requires passing a scenario-based, hands-on practical exam (050-689) that must be taken at a practicum administration location. You can find the list of locations through Novell's list of testing centers. Until the end of December 2004, you can take this practicum for free. The final price (starting Jan 1) has not been set.
CompTIA Seeks Beta Testers for Network+ Upgrade
The Computing Technology Industry Association (CompTIA) announced that it is seeking experienced network administrators and network support technicians to be beta testers for the 2005 upgrade of the CompTIA Network+ certification. The beta exam will be available beginning Monday, Nov. 29. Interested candidates can obtain a voucher to take the beta exam for free, by completing a pre-exam survey on the CompTIA Web site.
The Network+ certificate validates knowledge mastery equivalent to 12 months of network administration and network support experience. The exam covers best practices in media and topologies, protocols and standards, network implementation and network support.
CompTIA Linux+ Beta Extended
CompTIA has announced that the beta period for the new Linux+ exam has been extended to December 31. Previously it was slated to end Dec 1. The beta exam is available at the discounted price of $75. To register for the Linux+ beta exam, sign up as soon as possible online through Thompson Prometric or Pearson VUE testing centers. Reference exam ID #XK1-002.
Multimedia Communication Server (MCS) 5100 3.0 certifications now available from Nortel
Two new certifications supporting the latest release (3.0) of Multimedia Communication Server (MCS) 5100 are now available.
Nortel Networks Certified Design Specialist (NNCDS) - VoIP Multimedia Communication Server (MCS) 5100 3.0 validates your ability to install, maintain, configure, and perform day-to-day operational activities for the Multimedia Communication Server (MCS) 5100 3.0. To earn this credential, you must successfully complete two exams -- Technology Standards and Protocols for IP Telephony Solutions (#">920-803) and MCS 5100 3.0 (#920-139).
Nortel Networks Certified Support Specialist (NNCSS) - VoIP Multimedia Communication Server (MCS) 5100 3.0 validates your ability to install, maintain, configure, and perform day-to-day operational activities for the Multimedia Communication Server (MCS) 5100 3.0. To earn this credential, you must successfully complete two exams -- Technology Standards and Protocols for IP Telephony Solutions (#">920-803) and MCS 5100 3.0 (#920-140).
More details are available on the Nortel Certification web site.
Article by ArticleForge
VoIP Technologies: A Comprehensive Guide to Voice over Internet Protocol (VoIP)
Your complete guide to Voice over Internet Protocol
Looking for a reference on Voice over Internet Protocol (VoIP)? VoIP Technologies, your complete guide to Voice over Internet Protocol (VoIP), provides a comprehensive foundation of VoIP technology, as well as the knowledge necessary to successfully support any VoIP product.
Designed for those who have a working knowledge of data, this guide examines the major components of VoIP networks, the incorporation of VoIP into a data network, packaging and transmitting voice, maintaining voice quality, and addressing traffic issues. Many other topics are also discussed in this section, including VoIP standards, protocols, and configuring networks for VoIP. The second half of the guide focuses on designing and supporting complex VoIP solutions encountered in Wide and Local Area Networks (WAN and LAN).
This guide will also help to prepare you for the Technology Standards and Protocols for IP Telephony Solutions (">920-803) and Technology Standards and Protocols for Converged Networks (920-804). Nortel Professional Certification exams.
- Major components of the VoIP network
- Voice packetization
- Voice quality
- Quality of Service (QoS)
- Traffic convergence issues
- VoIP standardization and signaling protocols
- Managing VoIP networks
- Security in the VoIP environment
- Emergency services in the VoIP environment
- Technology standards and protocols for converged networks
- Network assessment
Today an understanding of VoIP is essential, because it allows network operators to lower operations costs and take advantage of advanced applications. The VoIP Technologies guide will provide you with the knowledge you need to understand VoIP, support a wide-variety of VoIP products, and prepare for Nortel Professional Certification exams.
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