What is Network?

  What is Network?

                  " Network is combinations of  computers, hardware devices,physical media,network devices and computer soft wares interlinked together for allow them to communicate with each others through the communication path ways."

 Why Networks?         

Now a day’s in the world the usage of network is growing efficiently.i hope this is very foolish question. There are so many features we are getting from networks.The main objective of the network is 'Resource Sharing' and 'Centralized Management'.

Sharing of Resources means share the data,applications,soft wares and hard wares such as printers,faxes ...etc along the nodes.

Centralized Management is managing group of computers,hardware devices,peoples,their information's, into single network segment.e.g, FTP Service,ADD Service,DHCP Service etc... 

Milestones in the history of Networking?

 Initially computers were mostly used for research and national defense purposes.Data networks designed exclusively for computing environments followed the introduction of business computing in the 1950s.

In 1960s—The first large-scale commercial computer network is created for an Airline Reservation Application and the Advanced Research Projects Agency Network (ARPANET) successfully links computers developed by different manufacturers, forming what is later described as the origin of today’s Internet.

In 1970s—A networking technology for minicomputers called Ethernet is developed.

In 1980s—The increase in the number of stand-alone desktop microcomputers within organizations In encourages widespread adoption of local area networks (LANs).

In 1990s—Web-based Internet resources are introduced on a global scale.

In 2000s—Improved networks provides the access to connect to with a network from any where in the world.That is World Wide Web.to-days Internet         

Aspects of Network?

     There are two aspects for setting up a network

           The first one is the physical media which is used for connecting hardware devices into a single network segment.The media can be Cables,Wi-Fi,Bluetooth,Infrared...etc.

         The Second one is the software or Firm Ware which is installed on the device should allow them to communicate with each others.                                                   

Related Posts:

 1.)Network Architecture?   

  2.)Types of Network?
 3.)Advantages of Network?  

 4.)Disadvantages of Network?

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Disadvantages of Personal Area Network?(PAN)?

DISADVANTAGES OF PERSONAL AREA NETWORK

Disadvantages of Personal Area Network:

 Health Issue:

              In this lot mostly devices are used for communication. wireless uses microwave signals  as medium for make communication path. Long time working with this radius signals will leads some brain related problems,and heart related problems.

Expensive:

             This network uses devices which are may expensive such as smartphones,laptops,Digi camera, PDA... etc.

Related Posts:

                     1.)Advantages of PAN network?

                     2.)What is Personal Area Network?

                     3.)What are the Types of Network?  

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Advantages of Personl Area Network?

ADVANTAGES OF PERSONAL AREA NETWORK

Advantages of Personal Area Network:

Portable:

            This is portable type of network that is if a person moving from one place he can carry his portable devices such as laptops,mobile phones,personal digital assistant...etc. So he can establish his network wherever he want without any wire by using wireless technology.

Security:

           Every information which are stored in the devices which are shared via network with authorized peoples only. So there is secure file transfer between devices.

Wearable Computing:

           This is the basic concept for wearable computing.It gives royal look and which makes work simple.

Related Posts:

                 1.)Disadvantages of Personal Network?

                 2.)What is Personal Area Network?

                 3.)What is types of Network?  

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What is Personal Area Network (PAN)?

WHAT IS PERSONAL AREA NETWORK

Personal Area Network:

         Personal Area Network is Communication network between devices such as phones, computers,tablets,camera and personal digital assistants.PAN is used for making communication between the personal devices internally and sharing Internet between all devices.Personal area network established around a individual person.Personal area network is normally used wired or wireless medium. It provides very short range communication.  

             Personal Area Networks are established by wireless medium is called Wireless Personal Area Network.(WPAN).It is made by any one of wireless medium technologies such as bluetooth,wireless usb,zigbee,z0wave,irDA...etc.

Related Posts:

           1.)Advantages of Personal Area Network?

           2.)Disadvantages of Personal Area Network?

           3.)Types of Area Network?  

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Disadvantages of Home Area Network?

DISADDVANTAGES OF HOME AREA NETWORK

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Lack of Wifi Password:

                   If the wifi password is easily guessed by others then any body on within the range can  stole Internet access and resources on the network.

Wifi-Microwaves:

                   Wireless devices uses microwave as a medium for communication.This microwave signals are will affect specially affect brains.It is not good for health.

Expensive:

                    The devices which are used for communication are should be capable to to access Internet which my expensive.etc...smart TV,laptops,smart phones...

Internet slow:

                    When multiple peoples accessing Internet with same share point then Internet speed will be shared to all users with equivalent speed.If one person is downloading a large file from Internet then it will slow down the speed for all other uses.

Related Posts:

                   1.)Advanages of Home Area Network(HAN)?

                   2.)What is Home Area network(HAN)?

                   3.)What is Types of Network?

Note:Dear visitors, if you have any doubt please make a comment here .I am glad to help you.

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Advantages of Home Area Network?(HAN)

ADVANTAGES OF HOME AREA  NETWORK

 Accessibility:
              This is better way which gives the better accessibility for all the devices in the network for accessing Internet connection.
Management:
              The resources on this network can be managed and controlled by this easy manner and data usage also can be managed.
Security:
              It enhance the home network security and reliability.Internet network also password protected.It can support MAC Address filtering.So Internet can be accessed by authorised peoples only.
Resources sharing:
              Resources on the network can be shared over network. such as files,folders,printers,faxes etc..
Multiuser:
              Multiple users can access the network resources such as Internet,shared devices,files etc simultaneously.
Life Style:
              It makes the quality of life and home with digital communication by its style.
Related Posts:
                  1.)Disadvantages of Home Area Network?
                  2.)What is Home Area Network?
                  3.)What is Types of Network?

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What is Types of Network?

TYPES OF NETWORK

Normally networks are classified as follows

Now a days network are classified as12 types depends upon its usage,size,devices which are connected.Brief explanation about all networks and its features are given on different links,Click your desired links and get your answer for your query.
 Types of Network:  

               1.)What is HAN?                         7.)What is SAN?

               2.)What is PAN?                         8.)What is GAN?

               3.)What is LAN?                          9.)What is EPN?

               4.)What is CAN?                        10)What is WAN?

               5.)What is VPN?                         11.)What is BACKBONE NETWORK?

               6.)What is MAN?                        12.)What is NANO SCALE NETWORK?

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What is HOME AREA NETWORK(HAN)?

HOME AREA NETWORK(HAN)

 

  Home Area Network:

                    Facilitate communication between digital devices which are capable to interact with each others present inside the Home is called Home Area Network(HAN). The handheld devices such as tablet,laptops,smart phones and other devices such as TV,camera,..etc.This type of devices re capable to interact with each others.If you need a Internet connection for all of these devices in your home by existing broadband connection  for your home this is the solution for that because your Internet service provider will give only one public ip address for your connection because lack of ipv4 ip addressing..So there is only one public ip which is accessed by any one of device at a time.What about other devices ?

                  So One of centralised device is required for the function of Network address Translation(NAT).That is it shares Internet access to all the Internet capable devices which are present in side the home network by sharing  public ip address of the WAN between private ip address of  for each devices.Mostly wireless network is used for Home Area Network.

Related Posts:

              1.)Advantagees of Home Area Network?

              2.)Diadvantages of Home Area Network?

              3.)Types of Network?

Note:Dear visitors, if you have any doubt please make a comment here .I am glad to help you.

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Disdvantages of Server Based Network Architecture?

DISADVANTAGES OF SERVER BASED NETWORK

Expensive:

              The server hardware devices,server operating systems which are expensive and the installation of network may require server administrator and network engineer they are expensive.

Administrating:

              Requires constant maintanence by server admin and admin sholud be havee necessary skills to maintain that and properr monitoring of network is essential task.

Server Failure:

             The entire network funtions are server based.If server fails then the entire network will go down because all the clients are server dependent.

Heavy Traffic:

             Server is backbone for handling whole network funtions which gives over load to the server.Nework traffic will be more because the client will start its communication session from booting time onwards untill it will go shutdown.Network Routing should be maintained in proper manner else it leads  server as busy state or it will affect is normal funtions.

Related Post:

               1.)Advantages of server based Network ?

               2.)What is Server Based Network?

               3.)What is Network Architecture?

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