Cisco 642-655 : WAASFE-Wide Area Application Services for Field Engineers

Exam Code: 642-655

Exam Name: WAASFE-Wide Area Application Services for Field Engineers

Updated: Jul 18, 2026

Q & A: 75 Questions and Answers

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Cisco 642-655 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Installation and Deployment20%- Network integration and routing considerations
- WAAS device installation and initial setup
Topic 2: Monitoring, Maintenance, and Troubleshooting20%- Performance monitoring tools and metrics
- Fault isolation and troubleshooting workflows
- Log analysis and system diagnostics
Topic 3: Integration with Cisco Infrastructure10%- Policy coordination with enterprise network services
- Integration with Cisco routers and WAN edge devices
Topic 4: WAAS Architecture and Core Concepts25%- WAAS system components and architecture overview
- Traffic optimization principles
- Deployment models (centralized and distributed)
Topic 5: Application Acceleration and Optimization25%- Caching and data reduction techniques
- Application-specific optimization policies
- Protocol optimization (TCP, CIFS, HTTP)

Cisco WAASFE-Wide Area Application Services for Field Engineers Sample Questions:

1. The command show wccp services displays what?

A) The WCCP service groups that are configured on the router
B) The WCCP service groups that are configured on the WAE
C) The WAE appliances that are registered with the router WCCP service
D) The routers that are registered with the WCCP service of the WAE


2. 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 autodiscovery failed with the remote WAE
B) The connection is not being optimized because the configured optimizations are not supported on the peer WAE
C) The connection is not being optimized because the remote WAE had different TFO optimizations configured than the local WAE
D) The connection is being optimized correctly, but no traffic has been optimized yet


3. Which WAE deployment model must you use to configure PortChannels on the core WAE appliances to enable load balancing across WAE interfaces?

A) off-router, two-arm
B) off-router, one-arm
C) on-router, two-arm
D) one-router, one-arm


4. One of your customers is using firewalls. What need to be permitted to pass through firewalls in order to allow WAE autodiscovery?

A) TCP SYN-ACK with data
B) TCP port 139
C) TCP options
D) TCP port 445


5. What is the function of Application Traffic Policies in a Cisco WAAS environment?

A) To associate a flow with a WAN connection and associate the WAN connection with an application accelerator
B) To associate a flow with a Central Manager and associate the optimized flow with an application definition
C) To associate a flow with a WAE and associate the optimized flow with a device group
D) To associate a flow with an optimization and associate the optimized flow with an application definition


Solutions:

Question # 1
Answer: B
Question # 2
Answer: A
Question # 3
Answer: B
Question # 4
Answer: C
Question # 5
Answer: D

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