A Wide Area Network (WAN) is the most suitable type of network for an organization that has operations in multiple cities and countries. WANs connect multiple local area networks (LANs) and other types of networks across long geographical distances, enabling seamless communication and data sharing among remote offices and branches.
A. Wide Area Network (WAN) (Correct Answer)
WANs cover extensive geographical areas, such as multiple cities, countries, or even continents.
They use various communication technologies, including leased lines, satellite connections, VPNs, and MPLS.
WANs enable organizations with distributed operations to centralize data management and enhance business continuity.
Example: An international corporation like a multinational bank or a global retail chain relies on a WAN to link its offices worldwide.
B. Local Area Network (LAN) (Incorrect Answer)
LANs are confined to a small area, such as an office building, factory, or campus.
They provide high-speed connectivity but are not designed for geographically dispersed locations.
Example: A single office using Ethernet and Wi-Fi to connect employees’ devices.
C. Metropolitan Area Network (MAN) (Incorrect Answer)
MANs span a city or a large campus but do not extend to multiple countries.
Example: A city's government agencies using a fiber-optic MAN for interdepartmental communication.
D. Storage Area Network (SAN) (Incorrect Answer)
SANs are dedicated high-speed networks designed for large-scale data storage and retrieval.
They are not meant for interconnecting geographically dispersed locations.
Example: A financial institution using a SAN for high-speed access to critical databases.
The IIA’s Global Technology Audit Guide (GTAG) – IT Risks and Controls emphasizes the importance of network infrastructure in securing and managing organizational data across multiple locations.
IIA Standard 2110 – Governance requires internal auditors to evaluate whether the organization’s IT strategy (including WAN infrastructure) supports business objectives and risk management.
IIA GTAG 17 – Auditing Network Security highlights the importance of WAN security, VPNs, and encryption when managing international operations.
Explanation of Answer Choices:IIA References:Thus, the correct answer is A. Wide Area Network (WAN).
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