CompTIA Security+ (SY0-501) — Question 90

After correctly configuring a new wireless enabled thermostat to control the temperature of the company's meeting room, Joe, a network administrator determines that the thermostat is not connecting to the internet-based control system. Joe verifies that the thermostat received the expected network parameters and it is associated with the AP. Additionally, the other wireless mobile devices connected to the same wireless network are functioning properly. The network administrator verified that the thermostat works when tested at his residence.
Which of the following is the MOST likely reason the thermostat is not connecting to the internet?

Answer options

• A. The company implements a captive portal
• B. The thermostat is using the incorrect encryption algorithm
• C. the WPA2 shared likely is incorrect
• D. The company's DHCP server scope is full

Correct answer: A

Explanation

The most likely reason for the thermostat's failure to connect to the internet is the implementation of a captive portal, which requires users to authenticate before accessing the internet. The other options, such as incorrect encryption or a full DHCP scope, do not apply since the thermostat is receiving the correct network parameters and operates correctly in a different environment.