A large manufacturing company relies heavily on industrial control systems to operate its production lines. The company has a range of devices, including programmable logic controllers $($PLCs$)$ and human$-$machine interfaces $($HMIs$),$ spread across the factory floor. Due to recent concerns about potential cyber threats, management wants to improve the security of these devices. How would the cybersecurity manager convince senior management of the primary objective of implementing physical device port hardening?

Group of answer choices

It encrypts data on USB drives.

It blocks incoming and outgoing network traffic.

It restricts access to physical interfaces.

It enables automatic network connections.