The document provides an overview of the Internet, including that it is a worldwide network connecting hundreds of thousands of individual networks, it has no central ownership or management, and users can access websites, email, files and discussion groups. It describes how the World Wide Web works using HTML pages linked through hyperlinks, and how domain names and URLs help locate web pages and files. It also outlines some common ways to search for information online, such as through search engines like Yahoo, Excite and AltaVista.
This presentation describes web technology on the basis of product, price, place and promotion. It also describes the features and advantages of web applications. It explains client-server model , Internet protocols, different IP address and difference between internet , extranet and intranet.
Define networks
Define the Internet
Identify Internet connection methods
Define Internet protocols
Define the Domain Name System (DNS)
Define cloud computing
How does Google work? How can a friend user her own computer to enter a Website you developed on your own machine? Where are your Facebook posts saved once you exit the browser?
In this talk we will learn the general ideas behind the Internet, what the main components of a Web application are and what happens from the moment you open the browser, enter an address and until you can see the Website with all the relevant data.
This talk was given at the she codes; Google Campus branch.
The lecture recording is available here: https://youtu.be/qys1rsBRhUs
This presentation describes web technology on the basis of product, price, place and promotion. It also describes the features and advantages of web applications. It explains client-server model , Internet protocols, different IP address and difference between internet , extranet and intranet.
Define networks
Define the Internet
Identify Internet connection methods
Define Internet protocols
Define the Domain Name System (DNS)
Define cloud computing
How does Google work? How can a friend user her own computer to enter a Website you developed on your own machine? Where are your Facebook posts saved once you exit the browser?
In this talk we will learn the general ideas behind the Internet, what the main components of a Web application are and what happens from the moment you open the browser, enter an address and until you can see the Website with all the relevant data.
This talk was given at the she codes; Google Campus branch.
The lecture recording is available here: https://youtu.be/qys1rsBRhUs
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What is Web Hosting? | Explained
What are the main types of web hosting, control panel, domain name, SSL, DNS, Name Server- all these topics are covered.
The World Wide Web is the most popular part of the Internet by far. The Web allows rich and diverse communication by displaying text, graphics, animation, photos, sound and video. The Web physically consists of your personal computer, web browser software, a connection to an Internet Service Provider, computers called servers that host digital data, and routers and switches to direct the flow of information.
What is Internet
What is Network
Internet
World Wide Web or WWW
Hyperlink & Hypertext
Network Protocol
TCP/IP Protocol
HTPP Protocol
Web Browser
Web Page
URL
Home Page
Kathmandu lesson prescribed for IX Class English by APSCERT & TGSCERT Syllabus. PPT prepared by M Padma Lalitha Sharada of GHS Malakpet under guidance of Smt. Nirmala Madam.
Css Founder is Website Designing Company working with the mission of Website For Everyone Website Start From 999/-* More Packages are available. we are best company in website designing company in Delhi, as we are also working in Website Designing company in Mumbai.
What is Web Hosting? | Explained
What are the main types of web hosting, control panel, domain name, SSL, DNS, Name Server- all these topics are covered.
The World Wide Web is the most popular part of the Internet by far. The Web allows rich and diverse communication by displaying text, graphics, animation, photos, sound and video. The Web physically consists of your personal computer, web browser software, a connection to an Internet Service Provider, computers called servers that host digital data, and routers and switches to direct the flow of information.
What is Internet
What is Network
Internet
World Wide Web or WWW
Hyperlink & Hypertext
Network Protocol
TCP/IP Protocol
HTPP Protocol
Web Browser
Web Page
URL
Home Page
Kathmandu lesson prescribed for IX Class English by APSCERT & TGSCERT Syllabus. PPT prepared by M Padma Lalitha Sharada of GHS Malakpet under guidance of Smt. Nirmala Madam.
"Dr. Dwarakanath Kotnis" Lesson prescribed for Class VIII English by SCERT of Telangana & Andhra Pradesh States. PPT prepared by M Padma Lalitha Sharada.
"Little Bobby" Lesson by Ritcha Rao prescribed for Class IX English by SCERT of Andhra Pradesh & Telangana States. PPT prepared by M Padma Lalitha Sharada.
Srinivasa Ramanujan Date Of Birth 22.12.1887Padma Lalitha
In last slide I have mentioned Srinivasa Ramanujan D.O.B. as
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"Junk Food - Junk Food - Go Away" Poem by Vikas included in Class V English prescried by SCERT of Telangana & Andhra Pradesh. PPT prepared by M Padma Lalitha Sharada
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1.Wireless Communication System_Wireless communication is a broad term that i...JeyaPerumal1
Wireless communication involves the transmission of information over a distance without the help of wires, cables or any other forms of electrical conductors.
Wireless communication is a broad term that incorporates all procedures and forms of connecting and communicating between two or more devices using a wireless signal through wireless communication technologies and devices.
Features of Wireless Communication
The evolution of wireless technology has brought many advancements with its effective features.
The transmitted distance can be anywhere between a few meters (for example, a television's remote control) and thousands of kilometers (for example, radio communication).
Wireless communication can be used for cellular telephony, wireless access to the internet, wireless home networking, and so on.
# Internet Security: Safeguarding Your Digital World
In the contemporary digital age, the internet is a cornerstone of our daily lives. It connects us to vast amounts of information, provides platforms for communication, enables commerce, and offers endless entertainment. However, with these conveniences come significant security challenges. Internet security is essential to protect our digital identities, sensitive data, and overall online experience. This comprehensive guide explores the multifaceted world of internet security, providing insights into its importance, common threats, and effective strategies to safeguard your digital world.
## Understanding Internet Security
Internet security encompasses the measures and protocols used to protect information, devices, and networks from unauthorized access, attacks, and damage. It involves a wide range of practices designed to safeguard data confidentiality, integrity, and availability. Effective internet security is crucial for individuals, businesses, and governments alike, as cyber threats continue to evolve in complexity and scale.
### Key Components of Internet Security
1. **Confidentiality**: Ensuring that information is accessible only to those authorized to access it.
2. **Integrity**: Protecting information from being altered or tampered with by unauthorized parties.
3. **Availability**: Ensuring that authorized users have reliable access to information and resources when needed.
## Common Internet Security Threats
Cyber threats are numerous and constantly evolving. Understanding these threats is the first step in protecting against them. Some of the most common internet security threats include:
### Malware
Malware, or malicious software, is designed to harm, exploit, or otherwise compromise a device, network, or service. Common types of malware include:
- **Viruses**: Programs that attach themselves to legitimate software and replicate, spreading to other programs and files.
- **Worms**: Standalone malware that replicates itself to spread to other computers.
- **Trojan Horses**: Malicious software disguised as legitimate software.
- **Ransomware**: Malware that encrypts a user's files and demands a ransom for the decryption key.
- **Spyware**: Software that secretly monitors and collects user information.
### Phishing
Phishing is a social engineering attack that aims to steal sensitive information such as usernames, passwords, and credit card details. Attackers often masquerade as trusted entities in email or other communication channels, tricking victims into providing their information.
### Man-in-the-Middle (MitM) Attacks
MitM attacks occur when an attacker intercepts and potentially alters communication between two parties without their knowledge. This can lead to the unauthorized acquisition of sensitive information.
### Denial-of-Service (DoS) and Distributed Denial-of-Service (DDoS) Attacks
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Ellisha Heppner, Grant Management Lead, presented an update on APNIC Foundation to the PNG DNS Forum held from 6 to 10 May, 2024 in Port Moresby, Papua New Guinea.
2. It is the largest network in the world that
connects hundreds of thousands of individual
networks all over the world.
The popular term for the Internet is the
“information highway”.
Rather than moving through geographical space,
it moves your ideas and information through
cyberspace – the space of electronic movement
of ideas and information.
3. No one owns it
It has no formal management organization.
As it was originally developed by the
Department of defense, this lack of
centralization made it less vulnerable to wartime
or terrorist attacks.
To access the Internet, an existing network need
to pay a small registration fee and agree to
certain standards based on the TCP/IP
(Transmission Control Protocol/Internet
Protocol) .
4. Send e-mail messages.
Send (upload) or receive (down load) files
between computers.
Participate in discussion groups, such as
mailing lists and newsgroups.
Surfing the web.
5. The Web (World Wide Web) consists of information
organized into Web pages containing text and
graphic images.
It contains hypertext links, or highlighted keywords
and images that lead to related information.
A collection of linked Web pages that has a common
theme or focus is called a Web site.
The main page that all of the pages on a particular
Web site are organized around and link back to is
called the site’s home page.
6. Many schools and businesses have direct
access to the Internet using special high-
speed communication lines and equipment.
Students and employees can access
through the organization’s local area
networks (LAN) or through their own
personal computers.
Another way to access the Internet is
through Internet Service Provider (ISP).
7. To access the Internet, an existing network need
to pay a small registration fee and agree to
certain standards based on the TCP/IP
(Transmission Control Protocol/Internet Protocol)
reference model.
Each organization pays for its own networks and
its own telephone bills, but those costs usually
exist independent of the internet.
The regional Internet companies route and
forward all traffic, and the cost is still only that of
a local telephone call.
8. A commercial organization with
permanent connection to the Internet that
sells temporary connections to
subscribers.
Examples:
Prodigy, America Online, Microsoft
network, AT&T Networks.
9. Once you have your Internet connection,
then you need special software called a
browser to access the Web.
Web browsers are used to connect you to
remote computers, open and transfer files,
display text and images.
Web browsers are specialized programs.
Examples of Web browser: Netscape
Navigator (Navigator) and Internet Explorer.
10. Web is a collection of files that reside on computers,
called Web servers, that are located all over the
world and are connected to each other through the
Internet.
When you use your Internet connection to become
part of the Web, your computer becomes a Web
client in a worldwide client/server network.
A Web browser is the software that you run on your
computer to make it work as a web client.
11. The public files on the web servers are ordinary
text files, much like the files used by word-
processing software.
To allow Web browser software to read them,
the text must be formatted according to a
generally accepted standard.
The standard used on the web is Hypertext
markup language (HTML).
12. HTML uses codes, or tags, to tell the Web browser
software how to display the text contained in the
document.
For example, a Web browser reading the following line of
text:
<B> A Review of the Book<I>Wind Instruments of
the 18th
Century</I></B>
recognizes the <B> and </B> tags as instructions to
display the entire line of text in bold and the <I> and </I>
tags as instructions to display the text enclosed by those
tags in italics.
13. Each computer on the internet does have a
unique identification number, called an IP
(Internet Protocol) address.
The IP addressing system currently in use on
the Internet uses a four-part number.
Each part of the address is a number ranging
from 0 to 255, and each part is separated from
the previous part by period,
For example, 106.29.242.17
14. The combination of the four IP address parts
provides 4.2 billion possible addresses (256 x
256 x 256 x 256).
This number seemed adequate until 1998.
Members of various Internet task forces are
working to develop an alternate addressing
system that will accommodate the projected
growth.
However, all of their working solutions require
extensive hardware and software changes
throughout the Internet.
15. Most web browsers do not use the IP address t locate
Web sites and individual pages.
They use domain name addressing.
A domain name is a unique name associated with a
specific IP address by a program that runs on an
Internet host computer.
This program, which coordinates the IP addresses and
domain names for all computers attached to it, is
called DNS (Domain Name System ) software.
The host computer that runs this software is called a
domain name server.
16. Domain names can include any number of parts separated by
periods, however most domain names currently in use have
only three or four parts.
Domain names follow hierarchical model that you can follow
from top to bottom if you read the name from the right to the
left.
For example, the domain name gsb.uchicago.edu is the
computer connected to the Internet at the Graduate School of
Business (gsb), which is an academic unit of the University of
Chicago (uchicago), which is an educational institution (edu).
No other computer on the Internet has the same domain
name.
17. The IP address and the domain name each identify a particular
computer on the Internet.
However, they do not indicate where a Web page’s HTML
document resides on that computer.
To identify a Web pages exact location, Web browsers rely on
Uniform Resource Locator (URL).
URL is a four-part addressing scheme that tells the Web
browser:
What transfer protocol to use for transporting the file
The domain name of the computer on which the file resides
The pathname of the folder or directory on the computer on
which the file resides
The name of the file
19. The transfer protocol is the set of rules that the
computers use to move files from one computer to
another on the Internet.
The most common transfer protocol used on the
Internet is the Hypertext Transfer Protocol (HTTP).
Two other protocols that you can use on the
Internet are the File Transfer Protocol (FTP) and the
Telnet Protocol
20. A number of search tools have been developed and
available to you on certain Web sites that provide
search services to help you find information.
Examples:
Yahoo www.yahoo.com
Excite www.excite.com
Lycos www.lycos.com
AltaVista www/alta-vista.com
MSN WebSearch www.search.msn.com
21. You can find information by two basic means.
Search by Topic and Search by keywords.
Some search services offer both methods, others
only one.
Yahoo offers both.
Search by Topic
You can navigate through topic lists
Search by keywords
You can navigate by entering a keyword or phase
into a search text box.