CompTIA Security+ Exam Notes

CompTIA Security+ Exam Notes
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Wednesday, October 16, 2024

Understanding WANs: Connecting Networks Across Distances

 WAN (Wide Area Network)

A wide-area network (WAN) is a computer network that connects smaller networks, or local-area networks (LANs), across great distances. Businesses and governments use WANs to connect offices, data centers, cloud applications, and networked sites.

WANs are essential for several reasons, including:

Communication

WANs allow employees and customers to communicate and share information across regions and countries.

Access to information

WANs allow employees to access the information they need to do their job, even when traveling. Students can use WANs to access library databases and university research.

Sharing information with customers

WANs help organizations share information with customers and partner organizations.

WANs can use various technologies for links, including circuit-switched telephone lines, radio wave transmission, and optical fiber. The Internet is the world's most extensive WAN.

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