Final answer:
A site survey and heat map are instrumental in planning a wireless network upgrade by evaluating signal coverage, spotting dead zones, and optimizing access point placement, ultimately ensuring effective connectivity and security.
Step-by-step explanation:
The primary purpose of conducting a site survey and creating a heat map for a company's wireless network upgrade is to assess wireless signal coverage, identify dead zones, and optimize access point placement for the upgrade. Conducting a site survey entails examining the physical layout of the building to address obstacles that might affect wireless signal strength and ensuring that the new network design provides adequate coverage without interference. Meanwhile, the creation of a heat map helps visualize the signal strength across different areas, aiding in the refinement of the network’s design to improve connectivity and security standards.