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Cisco 642-437 Exam Overview:
| Certification Vendor: | Cisco Systems |
|---|---|
| Exam Name: | Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) |
| Exam Number: | 642-437 |
| Available Languages: | English |
| Exam Format: | Simulations / Simlets (legacy Cisco exam format), Multiple choice |
| Certificate Validity Period: | Retired |
| Real Exam Qty: | 55-65 |
| Related Certifications: | Cisco Certified Voice Professional (CCVP) Cisco Unified Communications certification track Cisco Certified Network Professional (CCNP) Voice |
| Exam Duration: | 90 minutes |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Proctored exam delivered via Pearson VUE test centers or online proctoring (depending on availability at time of offering; exam is retired). |
| Pre Condition: | Recommended experience with Cisco networking fundamentals; often aligned with CCNA-level knowledge or Cisco voice track prerequisites. |
Cisco 642-437 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Quality of Service (QoS) | - Queuing techniques and bandwidth management - Congestion management and avoidance - QoS models and mechanisms - Traffic classification and marking |
| Topic 2: Signaling and Call Control | - SIP, H.323, and MGCP protocols - Dial plans and call routing - Gateways and gatekeepers |
| Topic 3: Call Admission Control and Performance | - Voice network performance considerations - Call admission control mechanisms |
| Topic 4: Troubleshooting and Operations | - Voice and QoS troubleshooting methodologies - Common VoIP deployment issues |
| Topic 5: VoIP Fundamentals | - Voice over IP architecture and components - Voice codecs and compression techniques - Voice traffic signaling basics |
642-437 Exam: Answers Before You Buy
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The written refund policy applies. Take the Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) exam within 60 days of purchase, and if you do not pass, PrepAwayPDF refunds you in full. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.
Proctored exam delivered via Pearson VUE test centers or online proctoring (depending on availability at time of offering; exam is retired). Registration for the Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) exam is handled through these official channels:
After booking, your PrepAwayPDF practice questions arrive by email within 1 minute — preparation can begin the same day.
The 642-437 exam is a Cisco certification exam validating the skills in the Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) syllabus shown above. It counts toward these credential paths: Cisco Certified Voice Professional (CCVP), Cisco Certified Network Professional (CCNP) Voice, Cisco Unified Communications certification track. Candidates at many career stages take it in 2026 to demonstrate verified capability. PrepAwayPDF prepares you with 257 practice questions in PDF, Desktop Test Engine, and Online Test Engine formats.
Everything, in one purchase: 257 practice questions for the Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) exam in three formats — a printable, expert-prepared PDF with instant download; a Desktop Test Engine for Windows that simulates the real exam with two practice modes and works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review. You also receive a free demo, 365 days of free updates from a team that keeps innovating on the material, a 50% renewal discount afterward, unlimited installations, and considerate pre-sale and after-sale service.
The Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) exam contains 55-65 with 90 minutes to complete them. Practicing under the same time constraint with the PrepAwayPDF Desktop Test Engine makes exam-day pacing feel rehearsed.
Recommended experience with Cisco networking fundamentals; often aligned with CCNA-level knowledge or Cisco voice track prerequisites. Since policies evolve, confirm the current requirements on the official Cisco exam page before you schedule.
Cisco recommends the following training for the Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) exam:
Supplement the training with the 257 practice questions from PrepAwayPDF — self-testing reveals what training alone cannot.
The official Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) outline defines 5 domains, the three largest being Signaling and Call Control, Quality of Service (QoS), and VoIP Fundamentals. The complete list is in the topics section above, and PrepAwayPDF's 257 practice questions address every domain.
Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:
Which command should be included in order to trust the DSCP-marked traffic from the distribution layer?
- A. mls qos trust dscp-cos
- B. mls qos trust cos
- C. mls trust dscp-cos
- D. mls qos trust dscp
Correct Answer: D 🗳️
Explanation: Only visible for PrepAwayPDF members. You can sign-up / login (it's free).
Which two statements describe ways that AutoQoS VoIP configuration is applied on a Cisco catalyst switch? (Choose two.)
- A. The auto qos voip command is applied globally in the switch.
- B. The auto qos voip command is applied to each interface.
- C. The auto qos voip trust command is applied to each interface.
- D. The auto qos voip cisco-phone command is applied to each interface.
Correct Answer: C,D 🗳️
Refer to the exhibit.
Your company's QoS policy states that all traffic that is arriving at access layer switches from IP phones should be marked with a DSCP value of 46 and that all untagged traffic that is arriving from a PC that is attached to an IP phone should be marked with a CoS value of 1. Which two options will satisfy the requirements for the CoS-to-DSCP map and are the correct QoS commands? (Choose two.)
- A. mls qos map cos 0 8 18 26 40 48 50 56
- B. mls qos map cos-dscp 0 10 18 26 34 46 48 56
- C. mls qos map dscp 0 8 16 26 32 40 48 56
- D. mls qos dscp 1
- E. mls qos 1
- F. mls qos cos 1
Correct Answer: B,F 🗳️
Explanation: Only visible for PrepAwayPDF members. You can sign-up / login (it's free).
What should you use to configure endpoint addressing if you are using Cisco Unified Communications Manager Express with SRST?
- A. ephone-dn
- B. dial-peer
- C. VoIP
- D. POTS
Correct Answer: A 🗳️
Which digit manipulation feature allows a partial telephone number to be prepended with a specific set of digits and is applied to all calls?
- A. digit prefixes
- B. number expansion
- C. forward digits
- D. digit extension
Correct Answer: B 🗳️
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