Computer network
network is defined as collection of autonomous computers, interconnected by a single technology. Interconnection means they are able to exchange information among themselves.
Technologies used for networking
Twisted pair
Coaxial cable
Fiber optic cable
Wireless
Topology
Topology refers to the physical layout of the network.
Ethernet
Ethernet is a family of computer networking technology for local area networks.It is IEEE 802.3
OSI Reference Model
Open System Interconnection is a standard reference model for communication between two end user network. The model is used in developing products and understanding networks.
Hub
Hub is a device for connecting multiple Ethernet devices together and making them act as single network segment .
Router
Router is a device that forward data packets between computer networks. A router is connected to two or more data lines from different network segments.
Network protocol
Protocol is set of rules in a network.
1. Routable protocols
2. Non routable
Types of Data Transmission
1. Unicast
2. Broadcast
3. Multicast
TCP/IP
Transmission Control Protocol/ Internet Protocol ( TCP/IP) is and industry standard stack that enables communication in different networking environments.
It enables computers to communicate across network segment. It is an open protocol.
It can connect dissimilar operating systems.
IP address
An IP address is a numeric identifier assigned to each machine on an IP network. It is Software address.
Subnetting
Subnetting is the process of technology used to reducing the wastage of host IP address.