What is a Network:-
A Network is a connected collection of devices and end systems, such as computers and servers, which can communicate with each other. Networks carry data in many types of environment, including homes, small businesses and large enterprises.
PHYSICAL COMPONENTS OF A NETWORK
Pc: The computers serve as a end point in a network. They send and receive data.
Interconnection: The interconnection consists that
components which provide a platform to a
point to other point. Eg:- NIC Card, cable, connector.
Switch: Switches are the devices that provide network
attachment to the end system.
Routers: Routers interconnect network and choose best path
between networks.
Wireless LAN: W-LAN devices connect network devices computers
and other end point to the network
without routers .
NETWORK USER APPLICATION
Email: Email is very valuable application for most network
user. User can communicate information, message and files with an
electronically method to same network and other also.
Web Browser: A web browser allows access to the internet
through a common interface. A web browser provides a common interface for
communicating with suppliers and customers. Some famous web browser like Microsoft
internet explorer, Mozilla fire fox, apple safari and google chrome.
Database: In this application servers stored data in a centralized form on a network such as file server, exchange server, and AD.All
connected users access this information easily.
CHARACTERISTICS OF A NETWORK
Speed: Speed is the most important part in a network.Its depend on ISP that how fast data transmitted over the network.
Security: Security is describe as a firewall of a network. Its use for save the transmit information from un-authorised used that flow on a Network.
Topology: In networks, there are physical and logical topology. Physical is used for wiring the devices and logical is used for how data send one to another by physical.
LOGICAL VS. PHYSICAL TOPOLOGIES
Logical Topology: The logical topology of a network refers to the logical paths that the signal use to travels from one point in the network to another point. This paths defines the way in which data accesses the network media and transmits packets across it.
Physical topology: The physical topology of a network to the physical structure layout of the devices and cabling. There are three primary category of physical topologies:-
(i). Bus: Computers and other network devices were cabled together in a line using coaxial cable. In modern bus topologies using twisted pair wiring.
(ii). Ring: Computers and other network devices connect like as to create a ring.
(iii). Star: All computers and devices are connected by a central cabling.
NETWORK USER APPLICATION
Email: Email is very valuable application for most network
user. User can communicate information, message and files with an
electronically method to same network and other also.
Web Browser: A web browser allows access to the internet through a common interface. A web browser provides a common interface for communicating with suppliers and customers. Some famous web browser like Microsoft internet explorer, Mozilla fire fox, apple safari and google chrome.
Web Browser: A web browser allows access to the internet through a common interface. A web browser provides a common interface for communicating with suppliers and customers. Some famous web browser like Microsoft internet explorer, Mozilla fire fox, apple safari and google chrome.
Database: In this application servers stored data in a centralized form on a network such as file server, exchange server, and AD.All
connected users access this information easily.
CHARACTERISTICS OF A NETWORK
Speed: Speed is the most important part in a network.Its depend on ISP that how fast data transmitted over the network.Security: Security is describe as a firewall of a network. Its use for save the transmit information from un-authorised used that flow on a Network.
Topology: In networks, there are physical and logical topology. Physical is used for wiring the devices and logical is used for how data send one to another by physical.
LOGICAL VS. PHYSICAL TOPOLOGIES
Logical Topology: The logical topology of a network refers to the logical paths that the signal use to travels from one point in the network to another point. This paths defines the way in which data accesses the network media and transmits packets across it.Physical topology: The physical topology of a network to the physical structure layout of the devices and cabling. There are three primary category of physical topologies:-
(i). Bus: Computers and other network devices were cabled together in a line using coaxial cable. In modern bus topologies using twisted pair wiring.
(ii). Ring: Computers and other network devices connect like as to create a ring.
(iii). Star: All computers and devices are connected by a central cabling.
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