- Exam Code: 642-436
- Exam Name: Cisco Voice over IP (CVOICE)
- Updated: Oct 22, 2026
- Q & A: 357 Questions and Answers
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| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Cisco Voice over IP (CVOICE) |
| Exam Number: | 642-436 |
| Exam Format: | Multiple choice, Simulation-based questions |
| Certificate Validity Period: | 3 years |
| Real Exam Qty: | 55-65 |
| Passing Score: | 800/1000 |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Exam Price: | $250 USD (historical; may vary by region and vendor updates) |
| Related Certifications: | Cisco Certified Network Professional Voice (CCNP Voice) Cisco CCNA Voice |
| Recommended Training: | Cisco Press - Implementing Cisco Voice over IP and QoS (CVOICE) Cisco Learning Network |
| Exam Registration: | Cisco Exam Registration (Pearson VUE) |
| Sample Questions: | ![]() |
| Exam Way: | Delivered via Pearson VUE test centers or online proctored exam (depending on availability) |
| Pre Condition: | Recommended: Cisco CCNA-level knowledge or CCNA Voice certification (or equivalent networking and telephony fundamentals) |
| Section | Objectives |
|---|---|
| Topic 1: Quality of Service (QoS) | - QoS mechanisms for voice traffic - Latency, jitter, and packet loss handling |
| Topic 2: Dial Plan Design | - Digit manipulation and translation rules - Numbering plans and routing logic |
| Topic 3: VoIP Fundamentals | - Voice over IP concepts - Codecs and compression techniques - PSTN vs VoIP architectures |
| Topic 4: Troubleshooting VoIP Systems | - Codec and signaling troubleshooting - Voice call setup issues |
| Topic 5: Cisco VoIP Infrastructure | - Cisco voice gateway components - Call agents and call control systems |
| Topic 6: Call Control Protocols | - MGCP architecture - H.323 protocol fundamentals - SIP signaling |
The 642-436 exam, officially titled Cisco Voice over IP (CVOICE), is the Cisco exam you pass to earn the Cisco Certified Voice Professional (CCVP) certification, a credential at the Professional level. Passing it confirms the skills defined in the official exam outline, and it is associated with related credentials such as Cisco CCNA Voice, Cisco Certified Network Professional Voice (CCNP Voice).
The 642-436 exam includes 55-65 questions and gives you 90 minutes to finish them. That is a tight pace per question, so get used to reading each stem once, flagging anything uncertain, and moving on rather than getting stuck. Running timed practice tests in the Actual4Dumps desktop or online test engine is the most reliable way to build that rhythm before exam day.
The passing score for the 642-436 exam is 800/1000, and the official registration fee is $250 USD (historical; may vary by region and vendor updates). Keep in mind that a failed attempt means paying $250 USD (historical; may vary by region and vendor updates) again in full to retake it, so book your slot only when your scores on Actual4Dumps practice tests sit consistently above the passing line.
Cisco lists the following prerequisites or eligibility notes for the 642-436 exam: Recommended: Cisco CCNA-level knowledge or CCNA Voice certification (or equivalent networking and telephony fundamentals). Requirements can change over time, so confirm the details on the official exam page on the official Cisco website before you register.
You can register for the 642-436 exam through the official channels below:
The exam is delivered in the following format: Delivered via Pearson VUE test centers or online proctored exam (depending on availability). Choose a date that leaves you enough time to work through the full 357-question practice set first.
Cisco recommends the following training resources for 642-436 candidates:
Official courses build the theory, and the 357 practice questions from Actual4Dumps help you turn that theory into exam-ready speed and accuracy.
Yes. Actual4Dumps offers a free PDF demo of the 642-436 material, so you can check the question style and answer quality before purchasing. Every purchase also includes 365 days of free updates, and if your product expires you can extend the update service at a 50% discount from your member zone.
Your purchase is protected by a 100% Money Back Guarantee with clear conditions: if you take the corresponding 642-436 exam within 60 days of purchase and do not pass, you can apply for a full refund. The candidate name must match the payer name, and you need to submit a scanned exam enrollment slip together with the official Score Report PDF within 2 days of taking the exam; claims are processed within 7 days. Sitting the exam within 3 days of purchase, downloading without taking the exam, free materials, and expired orders are not covered. If you would rather not take a refund, you can exchange your order for two free exam products of equal value and keep the update service on your original purchase.
Delivery is instant: your download links are emailed within one minute of payment, and you can also download directly from the website. If nothing arrives within 2 hours, contact customer service and check your spam folder. There is no limit on how many computers you can install the material on.
The 642-436 exam blueprint is divided into 6 domains, starting with VoIP Fundamentals; Dial Plan Design; Troubleshooting VoIP Systems. For the complete domain-by-domain breakdown, see the Exam Topics section above — it lists every topic the current outline covers.
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