- Exam Code: 642-104
- Exam Name: Unified Communication for System Engineers Exam
- Updated: Oct 24, 2026
- Q & A: 70 Questions and Answers
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| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Unified Communication for System Engineers Exam |
| Exam Number: | 642-104 |
| Passing Score: | 700-800 / Variable |
| Exam Format: | Simulation, Drag and Drop, Multiple Choice Single Answer, Multiple Choice Multiple Answer |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Real Exam Qty: | 70 |
| Exam Price: | $150 USD (retired, historical) |
| Exam Duration: | 90 minutes |
| Related Certifications: | CCNP Voice CCVP (Cisco Certified Voice Professional) |
| Recommended Training: | Cisco authorized UC system engineer training |
| Exam Registration: | Pearson VUE (historical) |
| Sample Questions: | ![]() |
| Exam Way: | Computer-Based Testing (CBT) at authorized Pearson VUE test centers |
| Pre Condition: | Valid CCNA / CCNA Voice certification or equivalent knowledge |
| Official Syllabus URL: | https://www.cisco.com (Retired exam, original blueprint no longer available) |
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Maintenance, Monitoring and Troubleshooting | 10% | - Backup and recovery procedures - System monitoring and logging - Common fault isolation and resolution |
| Topic 2: Cisco Unified Communications Manager (CUCM) | 30% | - Call processing and features - Endpoint registration and management - Installation and configuration - Dial plan implementation |
| Topic 3: Gateways, Protocols and Integration | 15% | - H.323, SIP, MGCP and SCCP protocols - PSTN and IP telephony integration - Voice gateway configuration |
| Topic 4: Unified Communications Architecture and Design | 25% | - UC system components and functions - Network requirements and QoS for UC - Single-site and multi-site deployment models |
| Topic 5: Cisco Unified Communications Applications | 20% | - Unified Presence - Unity Connection / Unity Express - Contact Center Express |
Cisco Unified Communication for System Engineers is an official Cisco exam, listed under exam code 642-104. A passing result earns you the IP Communications / Unified Communications Specialist certification at the Professional / Specialist level. It also ties into CCNP Voice, CCVP (Cisco Certified Voice Professional), extending its value across your certification roadmap. Employers read this credential as verified competence, which is why it keeps appearing in job requirements.
Expect 70 questions inside 90 minutes on the Cisco Unified Communication for System Engineers exam. That pace punishes hesitation, so rehearse it: the Actual4Dumps software engine simulates the real exam scene, reminds you of the questions you got wrong, and pushes you to re-practice them until the clock stops being your enemy.
Passing Cisco Unified Communication for System Engineers requires 700-800 / Variable, and the official registration fee is $150 USD (retired, historical). Retakes charge the full $150 USD (retired, historical) again, which is why experienced candidates treat preparation as the cheaper exam fee. Verify your readiness with repeated Actual4Dumps practice scores above the requirement before you commit to a date.
Valid CCNA / CCNA Voice certification or equivalent knowledge
Requirements evolve, so confirm the current conditions before registering on the official exam page.
Registration for Cisco Unified Communication for System Engineers goes through the official channels listed here.
When you schedule, note that the exam is delivered Computer-Based Testing (CBT) at authorized Pearson VUE test centers.
Cisco recommends the following training for Cisco Unified Communication for System Engineers candidates.
Follow any course with the 70 practice questions in the Actual4Dumps 642-104 package; the software engine will even remind you which mistakes need another round.
Yes. Actual4Dumps provides a free download demo of the Cisco Unified Communication for System Engineers material, so you can check the content before choosing a version. After purchase, a one-year warranty covers you: the latest version is sent to you as it releases, free for 365 days, and after expiry you can extend the update service at a 50% discount.
Your purchase is covered by a 100% money-back guarantee with clear conditions. Take the Cisco Unified Communication for System Engineers exam within 60 days of purchase; if you fail, provide your unqualified result by submitting a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and the full refund is processed within 7 days. The exam must match your product, candidate and payer names must match, and attempts within 3 days of purchase, unused downloads, free materials, and expired orders are not covered. Alternatively, exchange for two other exam products of equal value, free, or wait for updates while keeping your original product's update service.
Delivery is instant: files unlock for download at payment and are emailed within one minute. If nothing arrives within 2 hours, check spam and contact customer service, which works 7/24 and normally replies within two hours. Installation is unlimited across your computers.
The Cisco Unified Communication for System Engineers syllabus spans 5 domains, led by Gateways, Protocols and Integration (15%), Cisco Unified Communications Applications (20%), and Maintenance, Monitoring and Troubleshooting (10%). The complete topic list is published above; candidates who study the map first rarely get lost later.
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