**When two or more local area networks are combined together, we get a Wide Area Network (WAN).**

**Introduction to Local Area Network (LAN):**
A Local Area Network (LAN) is a computer network that spans a small area, typically within a single building or a group of nearby buildings. It is commonly used in homes, offices, schools, and small organizations. LANs are characterized by high data transfer rates and low latency, making them suitable for sharing resources and facilitating communication between devices within the network.

**Introduction to Wide Area Network (WAN):**
A Wide Area Network (WAN) is a type of computer network that covers a larger geographical area, such as multiple cities, countries, or even continents. WANs connect multiple LANs together, allowing devices in different locations to communicate with each other. Unlike LANs, WANs typically rely on public or private telecommunication networks to transmit data over long distances.

**Combining LANs to form a WAN:**
When two or more LANs are connected together through routers or other networking devices, they form a WAN. This connection can be established using various technologies, such as leased lines, satellite links, or virtual private networks (VPNs). The WAN acts as a bridge between the individual LANs, enabling devices from different networks to communicate as if they were part of the same network.

**Benefits of WAN:**
1. **Expanded Network Coverage:** By combining LANs into a WAN, organizations can extend their network coverage over larger distances, allowing seamless communication between geographically dispersed locations.
2. **Resource Sharing:** WANs enable the sharing of resources such as files, printers, and servers across multiple LANs, enhancing collaboration and productivity.
3. **Centralized Management:** With a WAN, network administrators can centrally manage and control the connected LANs, making it easier to monitor and maintain the overall network infrastructure.
4. **Cost Efficiency:** Sharing network infrastructure and resources across multiple locations can lead to cost savings compared to setting up separate LANs in each location.
5. **Improved Communication:** WANs facilitate efficient and reliable communication between different branches or departments of an organization, enabling real-time data sharing, video conferencing, and other collaborative activities.

**Conclusion:**
When two or more local area networks are combined together, they form a Wide Area Network (WAN). WANs provide expanded network coverage, resource sharing, centralized management, cost efficiency, and improved communication capabilities for organizations with geographically dispersed locations.

MAN(metropolitan area network ) is the correct one