Cost-effectiveness is not a challenge associated with IoT connectivity, as IoT devices are typically low-cost and affordable.

All of the above are common network selection challenges for IoT devices, as they often have limited range, high power consumption, and security vulnerabilities.

All of the above are common security challenges for IoT devices, as they often have weak passwords, unencrypted data transmission, and lack of authentication mechanisms.

All of the above are common power consumption challenges for IoT devices, as they often have short battery life, high power consumption during data transmission, and limited energy harvesting capabilities.

All of the above are common scalability challenges for IoT networks, as they often have limited bandwidth, high latency, and packet loss.

All of the above are common approaches to addressing the network selection challenge for IoT devices, as they can help to improve network connectivity and performance.

All of the above are common approaches to addressing the security challenge for IoT devices, as they can help to protect devices from unauthorized access and data breaches.

All of the above are common approaches to addressing the power consumption challenge for IoT devices, as they can help to extend battery life and reduce energy consumption.

All of the above are common approaches to addressing the scalability challenge for IoT networks, as they can help to improve network capacity and performance.

All of the above are common trends in IoT connectivity, as they are helping to drive the growth and innovation of IoT networks and devices.

All of the above are key challenges in IoT connectivity for mission-critical applications, as they require high levels of reliability, security, and power efficiency.

All of the above are promising technologies for addressing the connectivity challenges in IoT, as they offer improved network performance, coverage, and reliability.

All of the above are common challenges in IoT connectivity for industrial applications, as they require robust and reliable connectivity in challenging environments.

All of the above are key factors to consider when selecting an IoT connectivity solution, as they determine the suitability and effectiveness of the solution for the specific application.

All of the above are common challenges in IoT connectivity for healthcare applications, as they require high levels of security, compliance, and data management capabilities.