A computer network is a group of interconnected computers that communicate with each other to share resources and exchange information. Computer networks can be used to connect devices within a single building, across multiple buildings or even across different geographic locations.
Computer networks can be classified into different types based on their size, scope and purpose. Some common types of computer networks include:
Local Area Network (LAN): A LAN is a network that connects devices within a small geographical area, such as a single building or a group of buildings. LANs are commonly used in homes, offices, and schools to share files, printers, and other resources.
Wide Area Network (WAN): A WAN is a network that connects devices across a large geographical area, such as across different cities or countries. WANs are commonly used by businesses and organizations to connect their remote offices and branches.
Metropolitan Area Network (MAN): A MAN is a network that connects devices within a metropolitan area, such as a city or a town. MANs are commonly used by government organizations and educational institutions to connect their campuses.
Wireless Local Area Network (WLAN): A WLAN is a type of LAN that uses wireless technology, such as Wi-Fi, to connect devices. WLANs are commonly used in homes, coffee shops, and airports to provide wireless internet access.
Storage Area Network (SAN): A SAN is a specialized network that is used to connect storage devices, such as disk arrays and tape libraries, to servers. SANs are commonly used in data centers and other large-scale storage environments.
Virtual Private Network (VPN): A VPN is a secure network that is created by using public networks, such as the internet. VPNs are commonly used by businesses to provide remote workers with secure access to their corporate networks.
Computer networks can also be categorized based on the
type of communication they use, such as wired or wireless networks.
Understanding the different types of computer networks is important for
building efficient and secure communication systems.