CWS Technology & Digital Tools 2 — Questions and Answers
Question 1: Which wireless site survey tool feature allows a technician to visualize signal coverage as a color-coded overlay on a floor plan?
- Packet capture
- Heatmap generation (Correct answer)
- Channel utilization graph
- Spectrum waterfall display
Correct answer: Heatmap generation
Heatmap generation overlays signal strength, SNR, or other RF metrics as color gradients on a floor plan, helping technicians identify coverage gaps.
Question 2: A technician uses Ekahau Pro to perform a passive survey. What is the primary function of a passive survey?
- Transmitting test frames to measure throughput
- Listening to existing Wi-Fi signals without associating to an AP (Correct answer)
- Scanning for rogue APs using active probes
- Simulating client roaming between access points
Correct answer: Listening to existing Wi-Fi signals without associating to an AP
A passive survey listens to 802.11 beacon and management frames without associating to any AP, capturing real-world signal data.
Question 3: In wireless network management software, what does an SNMP trap accomplish?
- Polls a device at scheduled intervals for status updates
- Sends an unsolicited alert from a device to the NMS when an event occurs (Correct answer)
- Encrypts management traffic between the controller and APs
- Allocates IP addresses to wireless clients dynamically
Correct answer: Sends an unsolicited alert from a device to the NMS when an event occurs
An SNMP trap is an asynchronous notification sent by a managed device to the NMS when a specific condition or threshold is met.
Question 4: Which tool would a CWS technician use to identify the exact frequency and power level of a non-Wi-Fi interference source like a microwave oven?
- Wi-Fi analyzer app
- Spectrum analyzer (Correct answer)
- Protocol analyzer
- Network performance tester
Correct answer: Spectrum analyzer
A spectrum analyzer captures all RF energy across a frequency range, including non-802.11 sources, making it ideal for identifying interference.
Question 5: What is the primary purpose of the iPerf tool in a wireless network deployment?
- Scanning for rogue access points
- Measuring throughput and latency between two endpoints (Correct answer)
- Capturing and decoding 802.11 management frames
- Generating a visual heatmap of Wi-Fi coverage
Correct answer: Measuring throughput and latency between two endpoints
iPerf is a network testing tool that measures TCP/UDP bandwidth, latency, and packet loss between a client and server endpoint.
Question 6: A CWS technician exports a packet capture file from Wireshark. Which file extension is standard for this type of capture file?
- .csv
- .pcap (Correct answer)
- .snmp
- .cfg
Correct answer: .pcap
Wireshark saves packet captures in the .pcap (or .pcapng) format, which is the industry-standard format for network packet capture files.
Question 7: In cloud-managed wireless systems like Cisco Meraki, what enables technicians to push firmware updates to remote APs without on-site presence?
- Zero-touch provisioning via DHCP option 43
- Cloud dashboard with centralized update scheduling (Correct answer)
- RADIUS server push notifications
- 802.11r fast BSS transition protocol
Correct answer: Cloud dashboard with centralized update scheduling
Cloud-managed systems use a centralized dashboard where administrators schedule and push firmware updates to all managed APs remotely.
CWS Technology & Digital Tools 2
Which wireless site survey tool feature allows a technician to visualize signal coverage as a color-coded overlay on a floor plan?