Prepare with Cisco 642-437 exam torrent, pass for sure
Updated: Jul 29, 2026
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Cisco 642-437 Exam Overview:
| Certification Vendor: | Cisco |
| Exam Name: | Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) |
| Exam Number: | 642-437 |
| Exam Format: | Multiple Choice, Multiple Answer, Drag and Drop, Simulation/Scenario-based |
| Exam Duration: | 120 minutes |
| Related Certifications: | Cisco Certified Network Professional Voice (CCNP Voice) |
| Exam Price: | USD 250 (typical Cisco exam fee) |
| Passing Score: | Not publicly disclosed (Cisco typically reports pass/fail only) |
| Real Exam Qty: | Approximately 250–270 |
| Certificate Validity Period: | Cisco certificate validity was aligned to CCNP lifecycle — historically ~3 years (exam retired, so no current validity) |
| Available Languages: | English |
| Sample Questions: | Cisco 642-437 Sample Questions |
| Exam Way: | Historically delivered at Pearson VUE testing centers; exam has been retired and is no longer available |
| Pre Condition: | Valid CCNA-level knowledge recommended (no strict prerequisite), familiarity with voice fundamentals and Cisco IOS configurations |
| Official Syllabus URL: | https://www.cisco.com/site/us/en/learn/training-certifications/exams/retired.html |
Cisco 642-437 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Quality of Service (QoS) | - QoS mechanisms
|
| Topic 2: Cisco Unified Communications Manager Express | - CUCME configuration
|
| Topic 3: Cisco Unified Border Element (CUBE) | - CUBE features and configuration
|
| Topic 4: VoIP Fundamentals | - Voice over IP basics
|
| Topic 5: Voice Gateways and Call Routing | - Gateway implementation and configuration
|
| Topic 6: Troubleshooting | - Troubleshooting voice and QoS issues
|
Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:
1. Refer to the exhibit.
An administrator is migrating a PBX telephony system to an IP Phone solution using a fixed numbering plan. The extension numbers and PSTN DIDs cannot be changed. Which of the following methods can be used in order to reach the individual extensions at Site B when called via the PSTN?
A) The administrator can add a 1 to the DID for Site B to become 300-555-31xxx.
B) The administrator needs to map the last four digits in the DID to the extension numbers and prefix a site code.
C) The administrator needs to map the last four digits in the DID to the extension numbers using translation rules.
D) The administrator needs to map the last four digits in the DID to the extension numbers and prefix an intersite code.
E) No changes are necessary because PSTN calls are preceded with access code 9.
2. Which voice quality issue is described as voice clipping or skips?
A) serialization delay
B) propagation delay
C) jitter
D) fixed delay
E) packet loss
F) DSP delay
3. Which three connections can utilize the priority command? (Choose three.)
A) ATM PVCs
B) Frame Relay links
C) Fibre Channel
D) serial links
E) Fast Ethernet links
F) EtherChannel
4. Which command should you use to configure a dial peer to support T.38 fax relay and to use Cisco fax relay if T.38 negotiation is unsuccessful?
A) fax t38 fallback cisco
B) fax relay t38 cisco
C) fax protocol t38 fallback cisco
D) fax relay t38 backup ciscorelay
5. Which type of voice port supports immediate-start, wink-start, and delay-start followed by pulse or DTMF tones?
A) FXS
B) FXO
C) E&M
D) FXS-DID
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: E | Question # 3 Answer: A,B,D | Question # 4 Answer: C | Question # 5 Answer: C |
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