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| Certification Vendor: | Nortel |
|---|---|
| Exam Name: | Agile Communication Environment (ACE) Rls. 1.x Design & Engineering |
| Exam Number: | 920-520 |
| Available Languages: | English |
| Real Exam Qty: | 80-105 |
| Certificate Validity Period: | Retired, no longer renewable |
| Passing Score: | 70% |
| Exam Price: | $125-$150 USD |
| Exam Duration: | 90 minutes |
| Related Certifications: | Nortel Other Certification |
| Exam Format: | Multiple Choice, Scenario-based |
| Recommended Training: | Nortel Official ACE Design & Engineering Student Guide |
| Exam Registration: | Pearson VUE Prometric |
| Exam Way: | Proctored at Prometric / Pearson VUE test centers (exam retired) |
| Pre Condition: | No mandatory prerequisites; recommended knowledge of Nortel UC and IP networking |
| Official Syllabus URL: | https://en.wikipedia.org/wiki/Nortel_Certifications |
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security & Management | 15% | - Fault and performance monitoring - Management interfaces and tools - Authentication and encryption |
| Topic 2: ACE Architecture & Overview | 25% | - System components and functional modules - ACE Rls. 1.x features and capabilities - Deployment models and use cases |
| Topic 3: Implementation & Troubleshooting | 10% | - Design validation and documentation - Common design issues and resolution |
| Topic 4: Network Design & Integration | 30% | - IP network requirements - Interoperability with Nortel UC solutions - Signaling and media protocols |
| Topic 5: Dimensioning & Capacity Planning | 20% | - Redundancy and high availability design - Call load and traffic engineering - Server sizing and resource allocation |
Currency is maintained daily, not occasionally. Our IT staff reviews and updates the Nortel Agile Communication Environment (ACE) Rls. 1.x Design & Engineering question bank every day to keep it aligned with the live 920-520 exam. If a revision is underway when you buy or during your update period, we notify you and send the updated version as soon as it is ready — free within your 365 days of updates. You will never be left studying a stale edition without knowing it.
The 920-520 exam is the official assessment behind the Nortel Agile Communication Environment (ACE) Rls. 1.x Design & Engineering certification from Nortel, and its pass rate is genuinely low — many candidates need two or three attempts to get through. The difficulty is real, but it is also manageable: candidates who prepare with material aligned to the published objectives give themselves a far better starting position than those who walk in underprepared.
Registration for the 920-520 exam runs through these official channels:
Given how commonly this exam takes more than one attempt, schedule your sitting only when your practice results say you are ready.
The official outline divides the 920-520 exam into weighted domains, including:
The Nortel Agile Communication Environment (ACE) Rls. 1.x Design & Engineering question bank at PracticeDump is updated daily against these same objectives, and the free practice test lets you sample that alignment yourself.
Nortel recommends these training resources for candidates:
Official training builds the foundation; a daily-reviewed practice bank with expert-verified answers builds the exam-day readiness. Use both.
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Passing the 920-520 exam requires 70%, and registration costs $125-$150 USD — per attempt. With retakes so common on this exam, preparing properly for one focused attempt is the choice that protects your budget.
The 920-520 exam contains 80-105 questions with 90 minutes minutes to complete them. Practicing under the same time limit is the reliable way to make exam-day pacing feel familiar rather than frantic.
No mandatory prerequisites; recommended knowledge of Nortel UC and IP networking
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