The Internet, It was conceived by the Advanced Research Projects Agency (ARPA) of the U.S. government in 1969 and was first known as the ARPANet. The original aim was to create a network that would allow users of a research computer at one university to ‘talk to’ research computers at other universities. The Internet is a global network connecting millions of computers. More than 190 countries are linked into exchanges of data, news and opinions. No one actually owns the Internet, and no single person or organization controls the Internet in its entirety. The Internet is more of a concept than an actual tangible entity, and it relies on a physical infrastructure that connects networks to other networks. The number of Internet users represents nearly 40 percent of the world’s population. The largest number of Internet users by country is China, followed by the United States and India.

Server

a server is an instance of a computer program that accepts and responds to requests made by another program, known as a client. Less formally, any device that runs server software could be considered a server as well. Servers are used to manage network resources. There are many classifications of servers. most common types of servers are Application server, Cloud server, Database server, File server ,Proxy server, Standalone server, Web server.

switch

A switch is a piece of a physical circuitry component that governs the signal flow. Connecting two or more nodes in the same network or different network On a network, a switch is a hardware device that filters and forwards network packets, but often not capable of much more. The first network device that was added to the Internet was a switch called the IMP, which helped send the first message on October 29, 1969.

router

router is a device that forwards data packets along networks .A router has a lot more capabilities than other network devices, such as a hub or a switch that are only able to perform basic network functions. A router is connected to at least two networks, Routers use headers and forwarding tables to determine the best path for forwarding the packets, and they use protocols such as ICMP to communicate with each other and configure the best route between any two hosts.

IP address

IP address is short for Internet Protocol (IP) address .An IP address is a fascinating product of modern computer technology designed to allow one computer or other digital device to communicate with another via the Internet. IP addresses allow the location of literally billions of digital devices that are connected to the Internet to be pinpointed and differentiated from other devices IP address is an Internet Protocol address

Internet Protocol

An Internet Protocol is a set of rules that govern Internet activity and facilitate completion of a variety of actions on the World Wide Web. It’s the method or protocol by which data is sent from one computer to another on the Internet.

hostname

Computers are also named to differentiate one machine from another and to allow for such activities as network communication. host name is a unique name or label assigned to any device that is connected to a specific computer network. It facilitates the differentiation of different machines or devices connected to the Internet, a network and/or both. Allocated and assigned host names are based on the naming system used.

DNS

Domain Name System (DNS) is an Internet service that translates domain names into IP addresses or vice versa. The easiest way to find out your dns server IP address is to go through the router’s admin interface status page.When you type google.com into your web browser’s address bar, your computer contacts your current DNS server and asks what IP address is associated with google.com. Your computer then connects to the IP address and displays “google.com” in your web browser.

e-mail

Electronic mail is a method of exchanging digital messages between computer users. Short for electronic mail, email is information stored on a computer that is exchanged between two users over telecommunications. E-mail is a message that may contain text, files, images, or other attachments sent through a network to a specified individual or group of individuals. The first e-mail was sent by Ray Tomlinson in 197.

Online banking

Online banking, also known as internet banking, e-banking or virtual banking allows a user to execute financial transactions via the internet. An online bank offers customers just about every service traditionally available through a local branch or other financial institution including deposits, which is done online or through the mail, and online bill payment.

OTP

A one-time password (OTP) is an automatically generated numeric or alphanumeric string of characters that authenticates the user for a single transaction or session. The most important advantage that is addressed by OTPs is that, in contrast to static passwords, they are not vulnerable to replay attacks.