CWS CWS Site Survey & Network Planning 1 — Questions and Answers
Question 1: What is the primary purpose of a pre-deployment site survey in a CWS context?
- To determine AP placement and coverage requirements before installation (Correct answer)
- To configure SSID names on access points
- To reset existing network hardware
- To update firmware on switches
Correct answer: To determine AP placement and coverage requirements before installation
A pre-deployment site survey identifies coverage needs, obstructions, and optimal AP placement before any hardware is installed.
Question 2: Which tool is most commonly used during a passive site survey?
- Spectrum analyzer only
- A laptop with Wi-Fi adapter and site survey software (Correct answer)
- An oscilloscope
- A cable toner
Correct answer: A laptop with Wi-Fi adapter and site survey software
Passive surveys use a laptop with a Wi-Fi adapter and survey software to listen to existing RF signals without transmitting.
Question 3: What does RSSI stand for in wireless site surveys?
- Radio Signal Strength Index
- Received Signal Strength Indicator (Correct answer)
- Remote Site Survey Information
- Roaming Signal Standard Interface
Correct answer: Received Signal Strength Indicator
RSSI (Received Signal Strength Indicator) measures the power level of a received wireless signal, expressed in dBm.
Question 4: What is the recommended minimum RSSI value (in dBm) for reliable VoIP over Wi-Fi?
- -90 dBm
- -70 dBm
- -67 dBm (Correct answer)
- -50 dBm
Correct answer: -67 dBm
A minimum RSSI of -67 dBm is commonly recommended for VoIP applications to ensure low latency and packet loss.
Question 5: During a site survey, a wireless specialist notices high co-channel interference on all 2.4 GHz channels. What is the best corrective action?
- Increase transmit power on all APs
- Migrate affected devices to the 5 GHz band (Correct answer)
- Add more APs on the same channel
- Disable SSID broadcasting
Correct answer: Migrate affected devices to the 5 GHz band
Migrating devices to the 5 GHz band reduces co-channel interference because 5 GHz has more non-overlapping channels.
Question 6: What is a heat map in the context of a wireless site survey?
- A map showing server room temperature zones
- A visual representation of signal strength across a floor plan (Correct answer)
- A diagram of cable routing paths
- A chart of channel utilization over time
Correct answer: A visual representation of signal strength across a floor plan
A heat map overlays signal strength data onto a floor plan to visually show coverage areas and dead zones.
CWS CWS Site Survey & Network Planning 1
What is the primary purpose of a pre-deployment site survey in a CWS context?