What is the computer networking, state and describe 3 types and 3 toppological of network?

Computer networking is the practice of interfacing two or more computing devices with each other for the purpose of sharing data. It involves the use of different physical components (like cables, satellites, antennas, routers) and software (like operating systems, firewall, network security applications) to ensure smooth and secure data transfer.

Three types of computer networks are:

1. Local Area Network (LAN): This is a network that connects computers and devices in a limited geographical area such as a home, school, office building, or closely positioned group of buildings. Each device on a LAN has its own IP address. The speed, or data transfer rate, is high in a LAN, and the error rate is low.

2. Wide Area Network (WAN): This is a network that covers a broad area (i.e., any network whose communications links cross metropolitan, regional, or national boundaries). The internet is the largest WAN, spanning the Earth. A WAN is a data communications network that covers a relatively broad geographic area and often uses transmission facilities provided by common carriers, such as telephone companies.

3. Metropolitan Area Network (MAN): This is a network that interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network (LAN) but smaller than the area covered by a wide area network (WAN). The term is applied to the interconnection of networks in a city into a single larger network (which may then also offer efficient connection to a wide area network).

Three types of network topologies are:

1. Star Topology: In this type of network, all computers and other devices are connected to a central hub or switch. The hub or switch amasses and disseminates the flow of data within the network. This topology is commonly used in homes and offices.

2. Ring Topology: In this type of network, every device has exactly two neighbors for communication purposes. All messages travel through a ring in the same direction (either "clockwise" or "counterclockwise"). A failure in any cable or device breaks the loop and can take down the entire network.

3. Bus Topology: In this type of network, all devices are connected to a central cable, called the bus or backbone. Bus networks are relatively inexpensive and easy to install for small networks. The disadvantage of a bus network is that if the main cable fails or gets damaged, the entire network fails.