Hackers were skilled computer experts, some who with their technical knowledge access our accounts

Computer which is connected to network called as nodes. The data originates and terminates at these particular nodes is called as a source and destination.

Wired Network	Wireless Network
(i)This system is connected with network cable	(i) This network is connecting devices without cables (WiFi)
(ii) Examples: speakers,CCTV, printers, outdoors and scanners etc.	(ii) Example: Tablets (tab), indoor cameras and E-readers etc.

Features of Mobile Networks:
(i) Less consumption of power is used by mobile devices compared to a single transmitter or satellite since the cell towers are closer.
(ii) Huge capacity than a large transmitter, at single frequency can be used for different or many links as long as they are in different in cells.
(iii) As mobile phones are now heavilyused for data communication, the mobile network traffic is fully busy.

The common uses of computer network are
(i) Communication
(ii) Resource sharing
(iii) Information sharing

A set of computers connected together for the purpose of sharing resources is called as computer network.

(i) Resource sharing means one device accessed by many systems.
(ii) It allows all kind of programs, equipment's and available data to anyone via network to irrespective of the physical location of the resource of them.
(iii) Simply resource sharing is sharing such as printers, scanner, PDA, fax machine, and modems. For example, many computers can accessone printer if it is in networks.

(i) E-Banking plays an important role in our day today life, via Internet it can be accessed anytime, anywhere 24/7.
(ii) The speed and efficiency was very much better than that of done by counter at bank.
(iii) Owaday's online payment were done via Internet to avoid standing in the queue at office to paybills with very low transaction fees.

(i) Group information sharing over long distances.
(ii) Broadcast announcements.
(iii) Fostering diversity of thought.

Artificial intelligence helps to predict traffic as it collects and analyzes data in real time.

Cloud storage
1. It is just storage of data on online, access in different area no geographical limits was in need.
2. Cloud storage provides users with immediate access to a broad range of resources.
Cloud computing:
1. It is the on demand availability of computer system resources.
2. Especially data storage and computing power, without direct active management by the user

(i) ARPANET was the network that became the basis for the Internet. ARPANET at 1969-1970 was which underpinned the development of it and his theoretical work on hierarchical routing in late 1970s with his student Farouk Kamoun remains critical to the operation of the Internet today.
(ii) ARPANET took advantage of the new idea of sending information in small units called packets that could be routed on different paths and reconstructed at their destination.

1. The uses of the computer networking are:
2. It is used in business and home
3. Growth on popularity of cloud storage and cloud computing.
4. On behalf of buying physical copies of games music and movies, increasingly downloading and buy digital license their need via internet.
5. Developments on mobile networking infrastructure both deployments of 4G and 3G networks that will allow the people in their developed areas.
6. Allows it to their smart mobile phones as video broadcasting system and as mobile television.
7. Some of the people underlying and staying connected all the times, whenever they are at the workplace, via a home network, via publish WiFi hotspots or smart phone.
8. 4G LTE mobile network was not reached by many parts of world, of the industry of telecommunication has been hard working on the development of their next generation :"5G" cellular communication technology. This 5G intense to boost up the speed the mobile connections dramatically.
9. Artificial intelligence will help to maintain, manage, and protect it.
10. This Artificial network powering algorithms with become most intelligent:
11. It might find faster and reliable methods of anticipating threats and cleaning networks.
12. Artificial intelligence able to be a better predict traffic as it collects and analyses data in real time, some of network managers were better prepared for big event such as the world cup, Olympics, Valentines day which often put on the Internet under pressure.

A set of computers connected together for the purpose of sharing resources is called as computer networks.
Internet is the most common resource shared everywhere.
Developments: (Computer networking)
1. Here computer networks were faster, the Internet became full sterength and wireless communications has been transformed the way of business performed.
2. By the usage of latest technologies, such as cloud computing, are being used to allow globally without sacrificing security or limitating user access.
3. In E-banking we can pay or receive money from or to the customer may be easily done via gateways or by online payments were much easier.
4. Company renewals, license, other certificates bill payments, receipts, invoice, stock maintenance, can be done.
5. Network at home plays main role to access all such as E-banking, E-learning, E-governance, E-health, telemedicine, call centre video conferencing, digitalization of memories, can easy to access and use by avoiding lot of times and stacked at queue.
6. From the house we ordered delicious food from various hotels and restaurants at time without delay can be brought via Internet.
7. Mobile computers, such as laptop, tablet, and hand held computers were fastest growing segment.
8. Very fast and easiest way to cover all the people, who they are connected in social network media. For example whatsapp, facebook, twitter blogs, pintrest, linkedIn, classmates and so on. Through the above social media we share our taughts in different formats and different size of files.
Developments: (Internet)
1. Now a days the Internet plays a vital role.
2. Internet provides all the information and services to us.
3. Now a days we order anything and everything (food, clothes, stationaries, vegetables etc) through online (Internet)
4. Online services providers are flipkart, Amazon, snap deal etc to buy products via internet and have the product at door steps.
5. Online payments help in sending and receiving money via payment gateway using this Internet.
6. Internet is running all time 24x7 - 365 days.
7. A person who sale or buy anything and anytime that is main advantage of Internet.
8. E-Governance made easier to collect their certificates through online.
9. E-Banking plays an important role in our day to day life, via Internet.
10. The speed and efficiency was very much better than of done by counter at bank.
11. Now a days online payment were done via Internet.
12. For example on older days internet explorer, yahoo, being were powerful search engine.
13. Google stepped in with user friendly gmail, youtube, googledrive, google maps, etc.. and are useful applications.