66. After a security incident, a systems administrator asks the company to buy a NAC platform. Which of the following attack surfaces is the systems administrator trying to protect?

Answer: B

Explanation:

The systems administrator is trying to protect the Wired attack surface.

The systems administrator is focused on enhancing security for the Wired attack surface, which includes the physical network connections used to transmit data within an organization. Implementing a NAC (Network Access Control) platform helps manage and secure wired connections against unauthorized access and potential threats.

A) Bluetooth

Bluetooth represents a wireless communication technology that enables short-range data exchange. While important in certain contexts, it is not the primary focus of a NAC platform, which is more concerned with controlling access over wired networks rather than managing wireless connections like Bluetooth.

B) Wired

Wired networks are critical attack surfaces that NAC platforms are designed to protect. By monitoring and controlling devices connected to the wired network, NAC solutions can prevent unauthorized access, mitigate risks from malware, and ensure compliance with security policies, making this option the most relevant.

C) NFC

Near Field Communication (NFC) is another form of wireless communication that allows for data transfer over very short distances. Similar to Bluetooth, while NFC does present certain security challenges, it is not the primary concern of a NAC platform, which focuses on wired network security.

D) SCADA

Supervisory Control and Data Acquisition (SCADA) systems are essential for managing industrial processes. Although they require robust security measures, SCADA systems are not typically managed through NAC platforms, which are aimed at controlling access to standard IT networks rather than specialized industrial control systems.

Conclusion

The focus of the systems administrator on acquiring a NAC platform indicates a priority on securing the Wired attack surface, essential for safeguarding the organization's internal network. Other options, while relevant to security discussions, do not align with the specific functionality and purpose of a NAC solution, which is to manage and secure wired connections against potential threats.