Which type of phone can bypass perimeter controls such as firewalls or content filters?

Smartphone security bypass is the correct answer because smartphones have advanced capabilities that allow them to access the internet in various ways, often circumventing traditional perimeter controls such as firewalls or content filters. Smartphones can utilize cellular networks to establish connections that are independent of the organization's network infrastructure, effectively bypassing these perimeter defenses.

With the variety of apps available on smartphones, users can engage in activities that may evade monitoring systems. Additionally, smartphones are often used to connect to Wi-Fi networks outside the organization's control, further enabling access to potentially restricted content.

Feature phones, landline phones, and satellite phones typically lack the multifunctional internet capabilities and app ecosystems that smartphones provide; thus, they are generally more limited in how they can connect and interact with the internet, making them less likely to bypass designated security measures. Feature phones often support basic communication only, landline phones provide no internet access, and while satellite phones can connect to the internet, they usually do so in a controlled manner and might not circumvent network defenses as effectively as smartphones can.