| Term |
Discription |
| Chapter 1 : Introduction to Computer Networking |
| Information Technology |
IT is an area/field in which computer related work is done according to their business.
|
| Computer Network |
It is a group of a computers which are connected to each other and share the resource and
communication between them. |
| Point-to-point |
A point to point connection provides dedicated link between those two devices. |
| Multipoint |
multidrop configuration. In this connection, two or more device share links. |
| Chapter 2 : Computer Topology |
| Topology |
A network topology is the physical and logical arrangement of nodes and connections in a network.
Nodes usuakky include devices such as switches, routers, and software with switch and router
features. Network Topology are often represented as a graph.
|
| Hierarchical topology |
A Hierarchical topology connect multiple star networks to other star networks. |
| bus toplogy |
Bus topologies are multipoint electrical circuits that can be implemented using coaxial cable,
Unshielded Twisted Pair (UTP) or Shielded Twisted Pair (STP). |
| Star topology |
This topology frequently used networks which control the network located in central node. This
method optimal when the bulk of communication between the central and outlying nodes. |
| Ring toplogy |
The ring architecture is a distributed architecture, with minimal connectivity and a topology of
two links connected to every node. |
| Token Ring |
IBM Token Ring specifies a local area network access and topology. In IBM token ring topology,
computers or stations are attached to the bus in ring structure and uses broadcast token supervisory
frame to obtain access to communication channel. |
| FDDI |
FDDI developed as reliable high-speed network to voluminous traffic. provides data speed at rate
100Mbps and capable supporting stations on a network. |
| Mesh Topology |
In a mesh network, each pair of nodes is connected by means of an exclusive point-to-point link.
|
| chapter 3 : OSI Model |
| OSI |
It is a conceptual model that describes the universal standard of communication function of
telecommunication system or computing system, without any regards to the systems underlying without
technology and specific protocol suites. |
| Application |
this layer provides suppotr for user and application tasks which are programs that actually
implemented the function performed by user to accompolish various task over the network. It
determine how the user will use the data network. |
| Presentation |
The presentation layer translate the data based on application layer. It also allow to compression
service.The presentation layer concerned with presentation of data where supports special processing
on the data from the time application attempts to send it till the time it is sent over network.
|
| Session |
In this layer dialog control(logical environment) and synchronizationis done. This layer controls
the conversation between two computer .IT also include authentication and reconnection. |
| Transport |
This layer is accept data from session layer, and split into smaller unit called segment. in this
layer also checking the error and the flow of data. also it responsible for end-to-end communication
over a network. |
| Network |
In this layer the segment of data is converted into packet. It contain the address of data where the
data is coming from and where to go. |
| Data-link |
The data which is in packet form, it convert into frame. the data link layer also correct the error
that occurred at physical layer, and logical address(IP) of source or destination are add in this
layer. and moves toward to physical layer. |
| Physical |
In this layer the data is coming with its logical address. At physical layer, one might find
“physical” resource such as network hubs, repeater ,network adapters, or modems. |
| Layers Grouping |
The seven layers of the OSI Model are categorized into two-layer groupings. lower-layer and upper
layer |
| Intraction Between OSI Layers |
This term helps us for understanding the interaction between OSI Layer |
| Chapter 4 : Types of Network |
| Computer network |
Computers connected by many different technologies. An are interconnection between more than one
computer, over a virtual and shared connection, in a client-to-server or peer-to-peer manner is
called a network. |
| Local Area Network |
The Local Area Network (LAN) technology connects machines and people within a site. |
| Metropolitan Area Network |
Such large geographic areas districts, towns cities by Metropolitan Area Network (MAN). linking or
interconnecting smaller networks within large geographic area, information conveniently distributed
throughout the network. |
| Wide Area Network |
This technology connects sites that are in diverse locations. Wide Area Network (WANs) connects such
as large geographic areas, the world, India or New Delhi. There is no geographical limit of WAN.
|