CWS Quality Control & Process Improvement 2 — Questions and Answers
Question 1: Which metric is most commonly used to measure wireless network installation quality during a site acceptance test?
- Received Signal Strength Indicator (RSSI) (Correct answer)
- Number of access points installed
- Cable length used
- Cost per square foot
Correct answer: Received Signal Strength Indicator (RSSI)
RSSI is the primary metric used during site acceptance testing to verify that signal coverage meets the design specification.
Question 2: During a wireless deployment QC walkthrough, a technician notices intermittent packet loss on a newly installed AP. What is the FIRST step in the troubleshooting process?
- Replace the AP immediately
- Verify physical cable connections and PoE switch port status (Correct answer)
- Reboot the entire network switch
- Escalate to the vendor without further investigation
Correct answer: Verify physical cable connections and PoE switch port status
Verifying physical connections and PoE port status is the foundational first step before assuming hardware failure.
Question 3: What does a post-installation RF spectrum analysis primarily help identify?
- Number of users connected
- Co-channel interference and rogue AP sources (Correct answer)
- IP address assignments
- Firmware version compliance
Correct answer: Co-channel interference and rogue AP sources
RF spectrum analysis reveals interference sources such as co-channel overlap and unauthorized rogue access points.
Question 4: A QC checklist for a wireless installation should include verification of which of the following?
- Employee payroll records
- AP mounting height and antenna orientation (Correct answer)
- Marketing collateral placement
- Desk phone extensions
Correct answer: AP mounting height and antenna orientation
AP mounting height and antenna orientation directly affect coverage patterns and must be verified against the RF design.
Question 5: In a continuous improvement context, which framework uses Define, Measure, Analyze, Improve, and Control phases?
- ITIL
- Six Sigma DMAIC (Correct answer)
- Agile Scrum
- ISO 9001
Correct answer: Six Sigma DMAIC
Six Sigma's DMAIC methodology provides a structured five-phase approach to process improvement and defect reduction.
Question 6: When performing a wireless site survey for QC validation, a technician should use a survey tool set to which client adapter mode?
- Monitor mode only
- The same band and capabilities as the target client devices (Correct answer)
- Ad-hoc mode
- Hotspot mode
Correct answer: The same band and capabilities as the target client devices
Using survey hardware that matches target client capabilities ensures measurements reflect real-world user experience.
Question 7: Which document serves as the primary reference for verifying that a wireless installation meets the original design intent during QC review?
- Project invoice
- As-built RF design and heat maps (Correct answer)
- Employee training records
- ISP service agreement
Correct answer: As-built RF design and heat maps
As-built RF designs and heat maps document the intended coverage and serve as the baseline for QC comparison.
CWS Quality Control & Process Improvement 2
Which metric is most commonly used to measure wireless network installation quality during a site acceptance test?