Get real 642-426 exam questions for better preparation
Real Cisco 642-426 practice exam questions for easy pass!
Updated: Jul 30, 2026
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642-426 Exams with verified real questions and real answers will help you 100% pass
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Cisco 642-426 Exam Overview:
| Certification Vendor: | Cisco |
| Exam Name: | Troubleshooting Cisco Unified Communications (TUC) |
| Exam Number: | 642-426 |
| Available Languages: | English |
| Exam Price: | Approximately USD 250 (varies by region) |
| Certificate Validity Period: | Retired (legacy exam; no longer available) |
| Real Exam Qty: | Approximately 50–60 |
| Exam Duration: | 90 minutes |
| Passing Score: | 790 (scaled score out of 1000) |
| Related Certifications: | Cisco CCNP Collaboration Cisco CCNP Voice (legacy) Cisco Unified Communications |
| Exam Format: | Multiple choice, Multiple answer, Simulations, Drag and drop |
| Recommended Training: | Cisco Unified Communications Troubleshooting Courses (legacy materials) Cisco Learning Network |
| Exam Registration: | Cisco Certifications Portal Pearson VUE Cisco Exams |
| Sample Questions: | Cisco 642-426 Sample Questions |
| Exam Way: | Computer-based exam delivered via Pearson VUE testing centers or online proctoring (when available during active exam period). |
| Pre Condition: | Recommended: Cisco CCNA Voice (or equivalent knowledge in VoIP and IP telephony). |
| Official Syllabus URL: | https://www.cisco.com |
Cisco 642-426 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Cisco Unified Communications Manager (CUCM) Troubleshooting | - Dial plan and routing issues
|
| Topic 2: Media and Quality Troubleshooting | - QoS and network impact
|
| Topic 3: Cisco Unified Communications Troubleshooting Fundamentals | - Troubleshooting methodology and tools
|
| Topic 4: Cisco Unity Connection and Unified Messaging Troubleshooting | - Voicemail system issues
|
| Topic 5: Voice Gateway and Protocol Troubleshooting | - Signaling protocols
|
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