ISA/IEC 62443 Cybersecurity Fundamentals Specialist — Question 34

Which communications system covers a large geographic area?

Answer options

• A. Campus Area Network (CAN)
• B. Local Area Network (LAN)
• C. Storage Area Network (SAN)
• D. Wide Area Network (WAN)

Correct answer: D

Explanation

The correct answer is D, Wide Area Network (WAN), as it is specifically designed to cover large distances, connecting multiple local networks. In contrast, A (CAN), B (LAN), and C (SAN) are intended for smaller, localized areas and do not have the capacity to span extensive geographic regions.