A network can be configured or arranged in different ways. The physical layout or arrangement of connected devices in a network is topology. Identify the types of network topologies with pros and cons and with proper diagrams also (if any)?

Explain the primary role of a network switch in the OSI model and provide an example of a scenario where switches are beneficial.

What is the definition of "network topology"? Various network topologies must be recognized and explained in a straightforward manner.

A broadcast network is one in which a transmission from any one attached station is received by all other attached stations over a shared medium. Examples are a bus topology local area network, such as Ethernet, and a wireless radio network. Discuss the need or lack of need for a network layer (OSI layer 3) in a broadcast network.