The 920-121 exam is a core requirement for the NNCSS (Nortel Network Communications Support Specialist) certification at the Specialist level. Earning this validates your skills for credentials like NNCSS MPS 100 Application Developer (920-120), NNCSS MPS 500 Technical Support.

Candidates will face 45-57 questions and have 90 minutes to complete the exam. This means you need strict time management. We strongly recommend taking timed practice tests to ensure you can maintain a steady pace without rushing when under actual exam time pressure.

The official examination fee is $125 USD, and you must achieve a score of 70% to pass. Since retaking the test requires paying the full fee again, utilizing accurate practice materials for thorough self-assessment beforehand is crucial to protect your investment.

Candidate requirements include: Basic knowledge of MPS platform, telephony protocols, and programming concepts. Please verify all eligibility details on the official vendor website before scheduling your appointment.

Registration is handled through official testing partners. The exam is delivered via Retired, no longer available for registration; originally offered at Prometric/VUE centers. You can sign up here:

• Prometric
• Pearson VUE

The vendor suggests following official learning paths to build a foundational understanding:

• Nortel Official MPS Developer Training

Once you complete your training, use the 45 practice questions from Actual4Labs to refine your exam readiness.

Absolutely. A free PDF demo is available for you to evaluate the quality of our questions. Once purchased, you receive 365 days of free updates. If your access expires, you can renew it at a 50% discount to keep your materials current.

Your 920-121 practice materials are delivered instantly. You can download them right away, and a copy will be sent to your email within one minute (contact support if not received in 2 hours). You can install the software on an unlimited number of computers. We also offer a 100% Money Back Guarantee: if you fail the corresponding exam within 60 days of purchase, you can claim a full refund. To apply, submit your enrollment slip and official Score Report PDF within 2 days after taking the test (processing takes up to 7 days). Note: failures within 3 days of purchase, downloaded but unattempted exams, free materials, and expired orders are excluded. The payer's name must match the candidate's name. Alternatively, you can exchange your order for two free exams of equal value and keep the original product's updates.

The syllabus is divided into 4 main domains. Key areas include "Testing, Deployment & Troubleshooting" (25%), "MPS Architecture & Fundamentals" (25%), "Application Development Environment" (25%). For a comprehensive breakdown of all measured skills, please review the complete exam outline table provided above.