The Internet The Internet Overview Internet is defined
- Slides: 16
The Internet
The Internet - Overview • Internet is defined as an Information super Highway, to access information over the web. • However, It can be defined in many ways as follows: • • Internet is a world-wide global system of interconnected computer networks. Internet uses the standard Internet Protocol (TCP/IP). Every computer in internet is identified by a unique IP address. IP Address is a unique set of numbers (such as 110. 22. 33. 114) which identifies a computer location. • A special computer DNS (Domain Name Server) is used to give name to the IP Address so that user can locate a computer by a name. • Internet is accessible to every user all over the world.
The Internet - Overview • The Internet is a collection of computers connected by network cables or through satellite links. • Rather than connecting every computer on the Internet with every other computer, individual computers in an organization are normally connected in a local area network (LAN)
Advantages of Internet • The main advantage of the Internet is its ability to connect billions of computers and devices to each other. Not only does the Internet create convenience in sharing and receiving information between users, another advantage of the modern Internet is its ability for automation
Advantages of Internet • • Information, knowledge, and learning. . Connectivity, communication, and sharing. . Address, mapping, and contact information. . Banking, bills, and shopping. . Selling and making money. . Collaboration, work from home, and access to a global workforce. Donations and funding. . Entertainment.
Advantages of Internet • Internet covers almost every aspect of life, one can think of. Here, we will discuss some of the advantages of Internet: • Internet allows us to communicate with the people sitting at remote locations. There are various apps available on the wed that uses Internet as a medium for communication. One can find various social networking sites such as: • Facebook • Twitter • Yahoo • Google+ • Flickr • Orkut
Advantages of Internet • One can surf for any kind of information over the internet. Information regarding various topics such as Technology, Health & Science, Social Studies, Geographical Information, Information Technology, Products etc can be surfed with help of a search engine. • Apart from communication and source of information, internet also serves a medium for entertainment. Following are the various modes for entertainment over internet. • Online Television • Online Games • Songs • Videos • Social Networking Apps
Advantages of Internet • Internet allows us to use many services like: • Internet Banking • Matrimonial Services • Online Shopping • Online Ticket Booking • Online Bill Payment • Data Sharing • E-mail • Internet provides concept of electronic commerce, that allows the business deals to be conducted on electronic systems
Disadvantages of Internet • However, Internet has prooved to be a powerful source of information in almost every field, yet there exists many disadvanatges discussed below: • There always chances to loose personal information such as name, address, credit card number. Therefore, one should be very careful while sharing such information. One should use credit cards only through authenticated sites. • Another disadvantage is the Spamming corresponds to the unwanted e-mails in bulk. These e-mails serve no purpose and lead to obstruction of entire system.
Disadvantages of Internet • Virus can easily be spread to the computers connected to internet. Such virus attacks may cause your system to crash or your important data may get deleted. • Also a biggest threat on internet is pornography. There are many pornographic sites that can be found, letting your children to use internet which indirectly affects the children healthy mental life. • There are various websites that do not provide the authenticated information. This leads to misconception among many people.
Uses of Internet for Students • • • Electronic mail. . Research. Downloading files. Discussion groups. . Interactive games. . Education and self-improvement. .
Addressing Scheme • There are two types of addressing schemes • IP addressing • DNS addressing
IP Addressing • An IP address, or simply an "IP, " is a unique address that identifies a device on the Internet or a local network. It allows a system to be recognized by other systems connected via the Internet protocol. There are two primary types of IP address formats used today — IPv 4 and IPv 6 • The format of an IP address is a 32 -bit numeric address written as four numbers separated by periods. Each number can be zero to 255.
DNS Addressing • Domain Name Servers (DNS) are the Internet's equivalent of a phone book. They maintain a directory of domain names and translate them to Internet Protocol (IP) addresses. This is necessary because, although domain names are easy for people to remember, computers or machines, access websites based on IP addresses • DNS, or the Domain Name System, translates human readable domain names (for example, www. amazon. com) to machine readable IP addresses (for example, 192. 0. 2. 44). • DNS servers allow standard Internet users to use Internet resources without having to remember port numbers and IP addresses. Even similar services, such as different areas of the website, may be hosted at different IP addresses for security reasons.
WWW – World Wide Web • The World Wide Web (WWW) commonly known as the Web, is an information system where documents and other web resources are identified by Uniform Resource Locators(URL), which may be interlinked by hypertext, and are accessible over the Internet • The resouces of the WWW are transferred via the protocols and may be accessed by users by a software called web browser and are published by a software application called a webserver • The terms Internet and World Wide Web are often used without much distinction. However, the two terms do not mean the same thing. The Internet is a global system of interconnected computer networks. In contrast, the World Wide Web is a global collection of documents and other resources, linked by hyperlinks and URIs
Advantages of WWW • One of the advantage of World wide web is through communication. With the introduction of the Internet, we now have the ability to send and receive messages through electronic mail- virtually instantaneously and without the need of a postage stamp. Then the convenience of online shopping.
- What is the collection of well defined objects
- Hươu thường đẻ mỗi lứa mấy con
- Diễn thế sinh thái là
- điện thế nghỉ
- Các châu lục và đại dương trên thế giới
- Biện pháp chống mỏi cơ
- Bổ thể
- Thế nào là mạng điện lắp đặt kiểu nổi
- Phản ứng thế ankan
- Lời thề hippocrates
- Phép trừ bù
- Hát lên người ơi
- Tia chieu sa te
- Một số thể thơ truyền thống
- Sự nuôi và dạy con của hươu
- Dạng đột biến một nhiễm là
- Công thức tính độ biến thiên đông lượng