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Updated: Aug 18, 2026
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Cisco 642-655 Exam Overview:
| Certification Vendor: | Cisco |
| Exam Name: | Cisco Wide Area Application Services for Field Engineers |
| Exam Number: | 642-655 |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years (typical Cisco certification validity policy) |
| Real Exam Qty: | Approximately 45-55 |
| Passing Score: | Variable (Cisco does not publish official passing score) |
| Exam Price: | $250 USD (approximate, subject to region and updates) |
| Exam Format: | Multiple choice, Simulation-based questions (may be included) |
| Related Certifications: | Cisco WAAS certification |
| Recommended Training: | Cisco Learning Network - WAAS Resources Cisco Training and Certifications Portal |
| Exam Registration: | Pearson VUE Cisco Exams Cisco Certification Exam Registration |
| Sample Questions: | Cisco 642-655 Sample Questions |
| Exam Way: | Delivered via Pearson VUE test centers or online proctored exam |
| Pre Condition: | Recommended CCNA-level networking knowledge or equivalent experience with WAN technologies and Cisco infrastructure |
| Official Syllabus URL: | https://www.cisco.com/c/en/us/training-events/training-certifications/exams.html |
Cisco 642-655 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Installation and Deployment | 20% | - WAAS device installation and initial setup - Network integration and routing considerations |
| Monitoring, Maintenance, and Troubleshooting | 20% | - Performance monitoring tools and metrics - Log analysis and system diagnostics - Fault isolation and troubleshooting workflows |
| WAAS Architecture and Core Concepts | 25% | - WAAS system components and architecture overview - Traffic optimization principles - Deployment models (centralized and distributed) |
| Integration with Cisco Infrastructure | 10% | - Policy coordination with enterprise network services - Integration with Cisco routers and WAN edge devices |
| Application Acceleration and Optimization | 25% | - Application-specific optimization policies - Protocol optimization (TCP, CIFS, HTTP) - Caching and data reduction techniques |
Cisco WAASFE-Wide Area Application Services for Field Engineers Sample Questions:
1. Which two options are available for Cisco WAAS file-service integration? (Choose two.)
A) transparent appearing as a node on the remote office LAN
B) nontrasparent appearing as a node on the remote office LAN
C) transparent not appearing as a node on the remote office LAN
D) nontransparent not appearing as a node on the remote office LAN
2. What would you click to monitor current user connections in the WAAS mobile manager?
A) Mobile Clients under Active Sessions
B) WAAS Mobile Clients under Mobile Server 1
C) Connections under Mobile Server
D) Connections under Active Sessions
3. Exhibit:
You work as a network engineer at Your company. You study the exhibit carefully.
Based on this Central Manger Connection Statistics screen, what is the primary issue with port 8443 traffic not being optimized?
A) There is no acceleration policy matching the traffic
B) The connections are not staying open
C) the proper classifier is not being applied
D) The pod7-BR-WAE is overloaded
4. Exhibit: The exhibit shows an entry from a TFO transaction log on the WAE. What conclusion can you draw from this result?
A) The connection is not being optimized because the configured optimizations are not supported on the peer WAE
B) The connection is being optimized correctly, but no traffic has been optimized yet
C) The connection is not being optimized because the remote WAE had different TFO optimizations configured than the local WAE
D) The connection is not being optimized because autodiscovery failed with the remote WAE
5. Exhibit:
You work as a network engineer at Your company. You study the exhibit carefully.
A WAE in your environment is experiencing no HTTP acceleration. What is the problem according to the output from the Central Manager?
A) HTTP and Video Accelerators cannot be enabled at the same time
B) DRE eliminates all need for HTTP acceleration
C) The Enterprise license is not installed
D) The HTTP Accelerator is not enabled
Solutions:
| Question # 1 Answer: B,C | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: D |
Cisco 642-655 Exam Overview:
| Certification Vendor: | Cisco |
| Exam Name: | Cisco Wide Area Application Services for Field Engineers |
| Exam Number: | 642-655 |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | 3 years (typical Cisco certification validity policy) |
| Real Exam Qty: | Approximately 45-55 |
| Passing Score: | Variable (Cisco does not publish official passing score) |
| Exam Price: | $250 USD (approximate, subject to region and updates) |
| Exam Format: | Multiple choice, Simulation-based questions (may be included) |
| Related Certifications: | Cisco WAAS certification |
| Recommended Training: | Cisco Learning Network - WAAS Resources Cisco Training and Certifications Portal |
| Exam Registration: | Pearson VUE Cisco Exams Cisco Certification Exam Registration |
| Sample Questions: | Cisco 642-655 Sample Questions |
| Exam Way: | Delivered via Pearson VUE test centers or online proctored exam |
| Pre Condition: | Recommended CCNA-level networking knowledge or equivalent experience with WAN technologies and Cisco infrastructure |
| Official Syllabus URL: | https://www.cisco.com/c/en/us/training-events/training-certifications/exams.html |
Cisco 642-655 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Installation and Deployment | 20% | - WAAS device installation and initial setup - Network integration and routing considerations |
| Monitoring, Maintenance, and Troubleshooting | 20% | - Performance monitoring tools and metrics - Log analysis and system diagnostics - Fault isolation and troubleshooting workflows |
| WAAS Architecture and Core Concepts | 25% | - WAAS system components and architecture overview - Traffic optimization principles - Deployment models (centralized and distributed) |
| Integration with Cisco Infrastructure | 10% | - Policy coordination with enterprise network services - Integration with Cisco routers and WAN edge devices |
| Application Acceleration and Optimization | 25% | - Application-specific optimization policies - Protocol optimization (TCP, CIFS, HTTP) - Caching and data reduction techniques |
Cisco WAASFE-Wide Area Application Services for Field Engineers Sample Questions:
1. Which two options are available for Cisco WAAS file-service integration? (Choose two.)
A) transparent appearing as a node on the remote office LAN
B) nontrasparent appearing as a node on the remote office LAN
C) transparent not appearing as a node on the remote office LAN
D) nontransparent not appearing as a node on the remote office LAN
2. What would you click to monitor current user connections in the WAAS mobile manager?
A) Mobile Clients under Active Sessions
B) WAAS Mobile Clients under Mobile Server 1
C) Connections under Mobile Server
D) Connections under Active Sessions
3. Exhibit:
You work as a network engineer at Your company. You study the exhibit carefully.
Based on this Central Manger Connection Statistics screen, what is the primary issue with port 8443 traffic not being optimized?
A) There is no acceleration policy matching the traffic
B) The connections are not staying open
C) the proper classifier is not being applied
D) The pod7-BR-WAE is overloaded
4. Exhibit: The exhibit shows an entry from a TFO transaction log on the WAE. What conclusion can you draw from this result?
A) The connection is not being optimized because the configured optimizations are not supported on the peer WAE
B) The connection is being optimized correctly, but no traffic has been optimized yet
C) The connection is not being optimized because the remote WAE had different TFO optimizations configured than the local WAE
D) The connection is not being optimized because autodiscovery failed with the remote WAE
5. Exhibit:
You work as a network engineer at Your company. You study the exhibit carefully.
A WAE in your environment is experiencing no HTTP acceleration. What is the problem according to the output from the Central Manager?
A) HTTP and Video Accelerators cannot be enabled at the same time
B) DRE eliminates all need for HTTP acceleration
C) The Enterprise license is not installed
D) The HTTP Accelerator is not enabled
Solutions:
| Question # 1 Answer: B,C | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: D |
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