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Definition:
A WAN (Wide Area Network) connects computers and networks over large geographic areas, such as cities, countries, or even globally.
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Large Coverage:
WANs can span thousands of kilometers, making them suitable for multinational companies and global communication.
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Examples:
The Internet is the biggest example of a WAN. Other examples include bank networks, airline booking systems, and government networks.
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Connectivity:
WAN connects multiple LANs (Local Area Networks) together using communication technologies like fiber optics, satellites, and leased lines.
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Lower Speed (compared to LAN):
Because of long-distance data travel, WANs generally have slower speeds than LANs and may face latency (delay).
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Public and Private Ownership:
WANs are often partially or fully owned by telecom companies or internet service providers (ISPs).
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High Cost:
Building and maintaining a WAN is more expensive than a LAN due to infrastructure, hardware, and long-distance data transmission.
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Used for Communication:
WANs are widely used for email, file sharing, video conferencing, and online applications across distances.
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Security Concerns:
Since WANs often use public networks (like the internet), they are more vulnerable to cyber threats, so strong encryption and firewalls are necessary.
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Common Technologies Used:
WANs use VPNs, MPLS, leased lines, 5G, and satellite links to transmit data securely and efficiently across locations.
