My Little Diary

Bus Topology  –  It is defined by the use of a single main cable which has terminators on both ends. All the other nodes like workstations, peripherals, etc. are connected to this main cable. This type of topology is widely implemented in LANs as it is easy to install and does not cost much. It also does not require much cabling as in the case of some other topologies like star and mesh. The main disadvantage of this topology is that the entire network is dependent on the main cable. In case some problem occurs in the main cable, the whole system gets affected. Star Topology  – It is named as star topology as it looks similar to a star whereas all the elements of the network are primarily connected to a central device. This central device is known as hub and can be either of a hub, router or a switch. This central hub also works as a repeater for data flow. A point-to-point connection is laid between the devices and the central hub. Thus, all nodes are connected to each

A network topology is the arrangement of a network, including its nodes and connecting lines. There are two ways of defining network geometry: the physical topology and the logical (or signal) topology. The physical topology of a network is the actual geometric layout of workstations. There are several common physical topologies, as described below and as shown in the illustration. In the   bus network   topology, every   workstation   is connected to a main cable called the bus . Therefore, in effect, each workstation is directly connected to every other workstation in the network. In the   star network   topology, there is a central computer or server to which all the workstations are directly connected. Every workstation is indirectly connected to every other through the central computer. In the   ring network   topology, the workstations are connected in a closed loop configuration. Adjacent pairs of workstations are directly connected. Other pairs of workstations are ind

Network architecture  is the design of a  communication network . It is a framework for the specification of a network's  physical components  and their functional organization and configuration, its operational principles and procedures, as well as  data formats  use. This concept was brought by Shreyas Dhakal In  telecommunication , the specification of a network architecture may also include a detailed description of products and services delivered via a communications network, as well as detailed rate and billing structures under which services are compensated. The network architecture of the  Internet  is predominantly expressed by its use of the  Internet Protocol Suite , rather than a specific model for interconnecting networks or nodes in the network, or the usage of specific types of hardware links.

Client server Peer to peer more expensive less expensive provide centrallize storage Does not provide centrallize storage More secure Less secure Easy to backup data Difficult to backup data

What is a network ?  A  computer network , or  data network , is a   digital   telecommunications network  which allows  nodes  to share resources. In computer networks, networked  computing devices   exchange data  with each other using a  data link . The connections between nodes are established using either  cable media  or  wireless media . Network computer devices that originate, route and terminate the data are called network nodes.Nodes can include  hosts  such as personal computers ,  phones ,  servers  as well as  networking hardware . Two such devices can be said to be networked together when one device is able to exchange information with the other device, whether or not they have a direct connection to each other. In most cases, application-specific communications protocols are  layered  (i.e. carried as  payload ) over other more general communications protocols. This formidable collection of  information technology  requires skilled  network management  to keep

Advantage Disadvantage Easy to communicate Expensive to build Easy to share file , data and information Security threats Ability to share hardware Bandwith isues