What are two reasons why perimeter-based network security is no longer sufficient? (Choose two.)

The increase in users - including remote workers, mobile employees, and third-party contractors - means large numbers of legitimate users regularly access resources from outside the corporate network perimeter, where perimeter firewalls provide no protection.

The proliferation of devices such as employee-owned smartphones, tablets, and IoT endpoints creates massive numbers of access points that bypass perimeter controls entirely, making a perimeter-only model structurally insufficient.

The number of IT professionals does not affect whether perimeter-based security is architecturally capable of protecting modern environments - staffing size is unrelated to the model's structural limitations.

While more networks is a related trend, it describes the environment rather than directly explaining why the perimeter model fails; the primary drivers are the users and devices that exist outside the perimeter.

More vulnerabilities is a general security concern that has always existed, but it does not specifically explain the architectural inadequacy of perimeter-based models for modern distributed access patterns.