BASIC CONCEPT OF NETWORKING

“Instead of Better Glasses,  your Network gives you Better Eyes”!

Today computer networks are everywhere. Though, Pune has always been a networking hub of India. Networking in Pune has developed to a great extent and is still climbing up the staircase, making India proud!

Now, let us know about the Networking Basic Concepts! Here’s the Introduction to Networking!

Networking is usually used in reference to Computer Networking, which is now available in homes, offices, factories, hospitals leisure centres etc.

But how are they created? What technologies do they use?!

These are some of the questions whose answers we need to know to make us understand the concept of Networking and the basic networking fundamentals. They together comprise the Basics of Networking.

Basics of Networking!

Home and Office Networks

 The network you have at home uses the same networking technologies, protocols and services that are used in large corporate networks and on the Internet.

The only real difference between a home network and a large corporate network is the size. A home network will have between 1 and 20 devices and a corporate network will have many thousands.

For people who are completely new to networking then the Networking Basics Tutorial will provide the Introduction to Networking and the basic networking protocols used in small home/office networks and on the Internet.

Types of Networks:

 Computer Networks can be divided into two categories :-

  1. Wired Network
  2. Wireless Network.

with most networks being a mixture of both.

    1. Wired Networks:

 Early (pre 2008) networks were predominately wired. Wire Network is able to make available business grade products on various networks for NBN, as integrators for data services on the National Broadband Network.

Wired networks use Ethernet as the data link protocol.

Now, what is Ethernet?

Ethernet is a system for connecting a number of computer systems to form a local area network, LAN, with protocols to control the passing of information and to avoid simultaneous transmission by two or more systems. It is commonly used in Local Area Networks, Metropolitan Area Networks and Wide Area Networks..

Ethernet Cables

     2. Wireless Network:

Wireless networks are computer networks that are not connected by cables of any kind. The use of a wireless network enables enterprises to avoid the costly process of introducing cables into buildings or as a connection between different equipment locations.

It uses wireless data connections between network nodes. Wireless networking is a method by which homes, telecommunications networks and business installations have their computer network connections done.

The wireless communication revolution is bringing fundamental changes to data networking, telecommunication, and is making integrated networks a reality.

                                                                             Wireless Network

 

What are the types of Wireless Networks?

Wireless networks can be subdivided into:

  • A) Local Area Network (LAN)
  • B) Personal Area Network (PAN)
  • C) Metropolitan Area Network (MAN)
  • D) Wide Area Network (WAN)

       1) Personal Area Network is the Network installed by a particular person at his home or office environment, internal or outdoors.

      2) Local Area Network is the Network Installed within a particular campus or in a building having many homes or offices.

     3) Metropolitan Area Networks are the ones that are installed within a city for the various homes, offices, buildings, market places, etc.       They consist of the Personal Area Networks, and the Local Area Networks.

Personal area network (PAN)
Within reach of a person
Bluetooth, ZigBee, NFC
Local area network (LAN)
Within a building or campus
IEEE 802.11 (WiFi)
Metropolitan area network (MAN)
Within a city
IEEE 802.15 (WiMAX)
Wide area network (WAN)
Worldwide
 
  • D) Wide Area Networks 

A Wide Area Network is a telecommunications network that extends over a large geographical area for the primary purpose of computer networking. These comprise of all area networks, Personal Area Network, Local Area Networks, and Metropolitan Area Networks.

 Wide area networks are often established with leased telecommunication circuits.

Personal Area Network

Local Area Network

Metropolitan Area Network

Wide Area Network

Networking in Pune

Having known the various types of networks, now, let us know exactly what are the differences between the Wired and Wireless Networks!

Differences between wired and wireless networking:
  • In the wired network it utilizes the wires or the cables to link the computer machines for connecting to the Internet whereas in wireless networking does not need wires or the cables to link the computer machines.
  • In the wired network the computer must be linked to a router for the networking connection whereas in the wireless networking, the computer does not get linked to a router.
  • As compare to security purposes the wired network is more secure then wireless networking.
  • As compared to the speed point of your router in the wired networking the speed is faster as compared to wireless networking.

Wired Networks- Advantages and Disadvantages :-

Wired networks have the following advantages/disadvantages:

Advantages :-

  • Ethernet ports are found on almost all laptops/PCs and netbooks even on those 8 years old.
  • Wired networks are faster than Wireless. Data rates were periodically increased from the original 10 megabits per second, to 1gigabits per second. Most home networks use 10-100Mbps.
  • More secure than Wireless

Disadvantages :-

  • Need to Use cable which can be unsightly, difficult to run and
  • Can’t be used easily between buildings (planning etc).
  • Not supported on Mobile phones and tablets.

Wireless Networks – Advantages and Disadvantages :-

Advantages:

  • Generally easier to set up.
  • Can be used both on home and public networks
  • No cables required.
  • Can be used with mobile phones and tablets.

Disadvantages:

  • Generally Slower than wired networks.
  • Limited by range.
  • Open to eavesdropping.
  • Not as secure depending on set up.

The type and Range of a Communication Network depends on the Topology and Layout of the Network.

There are many different ways network nodes can be connected together. This isn’t normally a consideration in small networks but has networks get larger it becomes more important.

Network topology:

Network topology is the arrangement of the elements of a communication network. Network topology can be used to define or describe the arrangement of various types of telecommunication networks, including command and control radio networks, industrial `field busses and computer networks.

In other words, the Geometric representation of how the computers are connected to each other is known as Topology.

 There are five types of topology – Mesh, Star, Bus, Ring and Hybrid.

    1. Mesh Topology:

In Mesh Topology each device is connected to every other device on the network through a particular Point-to-Point link. This means that the link only carries data for the two connected devices only.

Thus, the devices are connected with many redundant interconnections between network nodes, forming a Mesh. Every node has a connection to every other node in the network.

This topology was originally developed 30+ years ago for military applications, but today, they are typically used for things like home automation, smart HVAC control, and smart buildings.

 There are two types of Mesh topologies: Full mesh and Partial mesh.

Mesh Topology

    2. Star Topology:

 A Star Topology is a topology for a Local Area Network (LAN) in which all nodes are individually connected to a central connection point, like a hub or a switch. A Star takes more cable than e.g. a bus, but the benefit is that if a cable fails, only one node will be brought down.

The Star network is one of the most common computer network topologies.

Star Topology

     3. Bus Topology:

 A Bus topology is a network setup where each computer and network device are connected to a single cable or backbone. Depending on the type of computer network card, a Coaxial cable or an RJ-45 network cable is used to connect them together.

It is also referred to as the Line topology.

It’s the easiest network topology for connecting computers or peripherals in a linear fashion.

    4. Ring Topology:

 A Ring network Topology is a network topology in which each node connects to exactly two other nodes, forming a single continuous pathway for signals through each node forming a Ring.  Rings can be unidirectional, with all traffic travelling either clockwise or anticlockwise around the ring, or bidirectional. These are commonly used in Wide area networks (WAN) and Metropolitan area networks (MAN).

    5. Hybrid Topology: 

Hybrid topology is an interconnection of two or more basic network topologies, each of which contains its own nodes. The resulting interconnection allows the nodes in a given basic topology to communicate with other nodes in the same basic topology, as well as, those in other basic topologies within the hybrid topology.

A Hybrid network is highly flexible as new basic topologies can easily be added or existing ones removed and increased fault tolerance.

There are different types of hybrid network topologies depending on the basic topologies that make up the hybrid and the adjoining topology that interconnects the basic topologies.

The following are some of the hybrid network topologies:

  • Star-Wired Ring Network Topology

In a star-wired ring hybrid topology, a set of star topologies are connected by a ring topology as the adjoining topology. Joining each star topology to the ring topology is a wired connection.

Star-wired Ring Network Topology

  • Star-Wired Bus Network Topology

A star-wired bus topology is made up of a set of star topologies interconnected by a central bus topology. Joining each star topology to the bus topology is a wired connection.

Star-wired Bus Network Topology

  • Hierarchical Network Topology

Hierarchical network topology is structured in different levels as a hierarchical tree. For this reason, it’s also referred to as tree network topology.

Hierarchical Network Topology

Thus, where there Is need for flexibility and ease of network growth, a Hybrid Network Topology is the best to use.

Now,

How the nodes on a network communicate with each other can be very different to how they are physically interconnected.

Most of Home and small office networks use a Physical Bus Topology. Then there are the Logical Topologies which can be either

  • Peer to Peer
  • Client Server. 

 

  • In Peer to Peer network, all nodes are equal and any node can talk to any other node.

This was the original networking model used in early Windows networks (windows for Workgroups).

  • In a Client Server Network, a server has a special role e.g file server, domain controller, web server etc.

A client connects to a server to use the appropriate services. This is the networking model used on the web and the Internet and on modern large Windows.

The modern example of Client Server networking is the Web, Facebook, Twitter, Google Search and many other web services using this networking model.

The various types of computer Networking in Pune are:

  • LAN
  • WAN
  • Metro routing.
  • Multi service switch.
  • PRI lines.
  • Remote computer network access.
  • Security firewall.
  • VPN.

To know details about all these, learn Networking step by step from Pune Institutes of learning Networking.

Regular classes as well as Online classes and trainings available. So, these were some of the basic networking fundamentals and types of Networking.

The Networking basics pdf, networking notes, network fundamentals pdf, are also some of the e-learning materials by which you can learn Networking step by step.

In India, Pune has always remained as a Networking Hub where you can find many popular institutes for learning Networking step by step.

Networking in Pune has gained momentum since last many years due to the various networking courses, network networking basics pdf, networking notes, fundamentals pdf, networking basic tutorials, regular networking classes, being available for students, adults, at reasonable costs.

Some of the basics and fundamentals of networking can also be known Online through Virtual Online classes, seminars, tutorials, etc.

Many people from within India and abroad are coming to Pune for learning Networking technology as here the success rate is 100%.

Many of the students who have learnt Networking in Pune have been of a great demand abroad and are excelling in their respective fields out there.

In India too, they are placed in number one software and hardware companies, both Indian and MNCs.

Rightly said,

“The most Successful people are often also those who rely heavily on the Power of Networking”!

For more details on Networking and Networking in Pune, contact : Clydon Technologies.

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