Understanding the Internet and Its Services

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Questions and Answers

What is the primary purpose of a web browser?

To retrieve, present, and traverse information resources on the Web (correct)

To secure private networks from Internet threats

To store data from the Internet for later use

To create HTML documents for web hosting

What does HTML stand for?

Hyperlink Markup Language

Hypertext Markup Language (correct)

Hypertext Media Language

Hyperlink Transport Management Language

Which of the following accurately describes a hyperlink?

A type of browser that opens web pages

A software application for web resource retrieval

A reference that allows immediate access to other text (correct)

A standalone document on the internet

What differentiates a webpage from a website?

A webpage is a single document; a website is a collection of one or more webpages. Signup and view all the answers

Which of the following statements is true regarding mobile browsers?

Mobile browsers are streamlined for use on mobile devices with limited power. Signup and view all the answers

Which two browsers are the most popular?

Microsoft Edge and Mozilla Firefox Signup and view all the answers

What is the primary purpose of a firewall in a private network?

To prevent unauthorized access Signup and view all the answers

In the client-server model, which component serves as the client?

The web browser that requests information Signup and view all the answers

Which encryption algorithm is recognized as an industry standard for securing sensitive data over the internet?

Advanced Encryption Standard (AES) Signup and view all the answers

Which of the following is NOT a characteristic of a web browser?

It can access local files directly without a network. Signup and view all the answers

What can be said about the Transport Layer Security protocol?

It is a newer version of SSL. Signup and view all the answers

Which of the following parts is NOT included when composing an email?

Message Body Signup and view all the answers

What is the significant difference between CC and BCC in an email?

BCC recipients cannot see other BCC addresses. Signup and view all the answers

What is the function of search engines on the Internet?

To search for information on the World Wide Web Signup and view all the answers

Which of the following statements about SSL is true?

SSL encrypts links between server and client. Signup and view all the answers

Which of the following is NOT a popular email service provider?

Bing.com Signup and view all the answers

What does a domain name represent?

The location where Internet users can access a website Signup and view all the answers

Which part of a URL specifies the method of accessing the resource?

Network protocol Signup and view all the answers

What characteristic distinguishes static web pages from dynamic web pages?

Static web pages display the same information for all users at all times. Signup and view all the answers

Which of the following is an example of server-side scripting?

ASP Signup and view all the answers

What is the primary purpose of HTTPS compared to HTTP?

To secure the transmission of information Signup and view all the answers

Which URL protocol is typically used for transferring files?

ftp:// Signup and view all the answers

What best describes the Internet?

A system of interconnected networks using TCP/IP Signup and view all the answers

Which statement accurately describes the difference between an intranet and an extranet?

Intranets are for internal use only; extranets allow external parties access. Signup and view all the answers

Which of the following best describes a dynamic web page?

It changes based on time or user interaction. Signup and view all the answers

What role does the host name or address play in a URL?

It represents the domain name where resources are located Signup and view all the answers

Which of the following is NOT considered an Internet service?

Local file storage Signup and view all the answers

What is the primary function of the World Wide Web?

To provide a platform for accessing multimedia documents over the Internet Signup and view all the answers

How is the ownership of the Internet best characterized?

It is a shared, decentralized entity with no single owner. Signup and view all the answers

Which term is synonymous with the Internet?

The Info Superhighway Signup and view all the answers

Which of the following correctly defines knowledge in the context of information?

Information that has been processed or understood. Signup and view all the answers

Which of the following is an example of a use of the Internet?

Participating in social networking Signup and view all the answers

Study Notes

The Internet

A worldwide network connecting thousands of smaller networks.
A global system with billions of devices linked by the internet protocol suite (TCP/IP).
Composed of millions of networks connected by different technologies.
AKA The Net, Info.Superhighway, Cyberspace.

Intranet vs. Extranet

Intranets use the internet, but only for internal use within organisations.
Extranets are similar to intranets but allow use by certain external entities, like suppliers.

Internet Services and Uses

Email and Discussion Groups - Communicate with individuals and groups
Research and Information - Access vast knowledge resources.
News - Stay updated on current affairs
Entertainment - Access multimedia content like videos and music.
File Downloading - Download documents or files.
E-Shopping - Purchase goods online.
Finacial Matters - Manage finances and online banking.
Online Auctions - Bid on items online.
Career Advancement - Seek opportunities and apply for jobs.
E-Business - Conduct business operations online.
Social Networking - Connect with friends and family.

World Wide Web (WWW)

An interconnected system of internet computers (servers) that support various documents in multimedia format.
Built on the internet and provides a way of accessing information over the internet.
Not the same as the internet.

Useful Concepts

Hypertext is text with references (hyperlinks) to other text.
Hyperlink is a reference to data that the reader can follow by clicking or hovering.
Hypertext Markup Language (HTML) is a language used to create documents on the World Wide Web.

Web Browser

Software used for retrieving, presenting, and accessing information on the World Wide Web.
Uses a client-server model.
Browser is the client and communicates with the web server to request information.
Web server responds to the request and sends information back to the browser.

Examples of Web Browsers

Most popular: Microsoft Edge and Mozilla Firefox
Others: Google Chrome, Apple Safari, and Opera.
Used to access information within private networks like intranets.

Mobile Browsers

Designed for accessing the web from mobile devices.
Smaller versions of web browsers with fewer features to run efficiently.
Optimized for smaller screens and limited processing power.

Webpages vs. Websites

Webpage is a document written in HTML that is accessible through the Internet or a network.
Website is a collection of one or more webpages grouped under a domain name.
Both are accessed using a Uniform Resource Locator (URL).

Uniform Resource Locator (URL)

A global address of documents and other resources on the World Wide Web.
Three parts:
- Network protocol (e.g., http://)
- Host name or address (the domain name)
- File or resource location (the specific resource).

Static Webpages

Delivered exactly as stored.
Provide the same information to all users at all times.
Usually ".html" files.
Easy to create and don't require special web servers (e.g., a student's personal profile page).

Dynamic Webpages

Prepared with content or layout based on certain criteria.
Information frequently changes (e.g., stock prices).
Utilize client-side and server-side scripting languages (e.g., JavaScript, ASP, PHP).
Example: An online store showing different prices, reviews, and user information.

HyperText Transfer Protocol (HTTP)

A protocol used for viewing webpages on the web.
The foundation of data communication for the World Wide Web.

File Transfer Protocol (FTP)

A protocol used to transfer files from one host to another over a network.
Based on client-server architecture.

Internet Security Protocols

HTTPS (HTTP Secure): Encrypts data being retrieved by HTTP.
Secure Socket Layer (SSL): A standard protocol for establishing encrypted links between servers and clients.
Transport Layer Security (TLS): The successor to SSL and the latest standard for secure communication.
Advanced Encryption Standard (AES): An encryption algorithm for securing sensitive data over the internet.

Firewall

A system designed to prevent unauthorized access to or from a private network.
Commonly used to prevent unauthorized internet users from accessing internal networks.
Examines all messages entering or leaving the intranet and blocks those that don't meet security criteria.

Search Engines

Systems or websites designed to search for information on the World Wide Web.
Present results in a list or search engine results pages (SERPs).

Examples of Search Engines

Google
Bing
Yahoo
DuckDuckGo
Baidu

Email Services

Electronic mail, commonly referred to as email or e-mail.
First email sent in 1971 by Ray Tomlinson to himself.

Email Addresses

Gmail.com
Yahoo.com
Hotmail.com
MySpace.com
Fastmail.com
Mail.com
Fanbox.com

Composing an Email

TO: List of addresses of intended recipients.
CC: List of addresses for those receiving a copy of the message. They can see original recipients.
BCC: List of addresses for those receiving a blind copy. They cannot see other recipients.
SUBJECT: Message title that appears in the recipient's inbox.

Email Parts

Subject: Message title
From: Sender's email address
To: List of recipient addresses
CC: List of carbon copy recipients
BCC: Blind copy recipients
Date: Date and time of the email.
Body: Content of the message.

Questions

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Description

Explore the vast world of the Internet, including its infrastructure and differences between intranets and extranets. Dive into the various services like email, research, entertainment, and online shopping that the Internet offers. This quiz is essential for understanding how we connect and interact in the digital age.