Chapter 5- Internet and Social Media
World Wide Web (WWW)
·
A
network of interlinked hypertext documents and multimedia content.
·
Developed
in 1989 at CERN (Geneva, Switzerland).
·
Accessed
using web browsers.
Example: Websites, online resources.
Web Browser
·
Special
software to access and view information on the web.
·
First
browser: Mosaic (1992, by Marc Andreessen).
·
Examples:
Google Chrome, Mozilla Firefox, Safari.
·
Functions:
Opens, interprets, and displays web pages.
Search Engine
·
Software
that finds information on the internet based on keywords.
·
Examples:
Google, Bing, Baidu, DuckDuckGo.
·
Features:
Shows text, images, videos, maps, shopping, etc.
URL (Uniform
Resource Locator)
Internet address to access websites/files.
Remote Login
·
Process
of logging into a remote computer to access services.
·
Transfers
results from remote → local computer.
Web Protocols
Protocol: A set of rules for communication
between computers.
Examples:
HTTP: Hypertext Transfer Protocol →
request/response, not secure.
HTTPS: Secure version of HTTP → uses
encryption (SSL/TLS).
Email
·
Electronic
mail used for communication.
·
Fields:
To, Cc, Bcc, Subject, Body, Attachments.
·
Common
actions: Reply, Forward, Attach, Mark as Spam.
Uses:
·
Personal
(messages, invitations).
·
Education
(student-teacher communication).
·
Business
(official communication, transactions).
·
Marketing
(offers, newsletters).
·
Entertainment
(fan clubs, updates).
Social Media
·
Online
platforms to connect, share, and communicate.
·
Examples:
Facebook, Instagram, WhatsApp, Twitter, LinkedIn.
Pros:
Global connectivity, info sharing, business
opportunities, self-expression, real-time updates.
Cons:
Isolation, misinformation, cyberbullying,
mental health impact, productivity loss, body image issues.
Video
Conferencing Tools
·
Online
meetings with video + audio + chat.
·
Requires
etiquette: be punctual, mute when not speaking, formal dress.
Examples:
Zoom – large meetings, webinars, recording.
Google Meet – simple online collaboration.
Microsoft Teams – collaboration + meetings +
file sharing.
Blogs
Online
journals/diaries to share ideas, experiences, info.
Topics: travel, hobbies, tech, education, etc.
Features:
Posts (entries), authorship, comments,
categories, archives.
Tags for search, images/multimedia, sharing
options, subscriptions.
Exercises
i.
TCP/IP
– Transmission Control Protocol / Internet Protocol
ii.
WWW
– World Wide Web
iii.
HTML
– HyperText Markup Language
iv.
SERP
– Search Engine Results Page
v.
URL
– Uniform Resource Locator
vi.
HTTP
– HyperText Transfer Protocol
vii.
HTTPS
– HyperText Transfer Protocol Secure
viii.
SMTP
– Simple Mail Transfer Protocol
ix.
SFTP
– Secure File Transfer Protocol
x.
VPN
– Virtual Private Network
xi.
IMAP
– Internet Message Access Protocol
xii.
WiFi
– Wireless Fidelity
Multiple Choice Questions
i. What is the term used
to describe the interlinked collection of hypertext documents and multimedia
content available on the Internet?
a. Internet
b. World Wide Web (WWW)
c.Web Browser
d. Search Engine
ii. Which of the
following is a secure version of HTTP, providing encrypted communication?
a.HTTP
b. HTTPS
c. FTP
d. SMTP
iii. The main purpose of
social media is
a. editing documents
b. connecting, sharing, and talking to others online
c.playing online games
d. sending emails
iv.Which of the
following is not an example of a VPN?
a. NordVPN
b. Google Meet VPN
c. ExpressVPN
d. Super unlimited proxy
V. Which of the
following applications are used for online meetings?
a. Google Meet
b. Zoom
C. Skype
d. All of the above
vi. are individual
entries called in a blog?
a. Pages
b. Sections
c. Posts
d. Articles
Give appropriate
technical terms for the following:
a. A global collection
of computer networks and gateways that communicate with one another via telephone
lines, modems, or satellites utilizing the TCP protocol suite.
Internet
b. An internet service
developed to incorporate footnotes, figures, and cross references into online
hypertext documents.
World Wide Web
(WWW)
c. An Internet host
computer that may store thousands of websites.
Web Server
d. A unique four-part
numeric address (between 0 and 255) is assigned to each computer on the
Internet, containing routing information to identify its location.
IP Address
e. The default page, or
main web page of a website.
Home Page
f.A page-description
language used on the World Wide Web that defines de hypertext links between
documents.
HTML (HyperText
Markup Language)
g.A naming system used
for computers on the Internet.
DNS (Domain Name
System)
h. The set of commands
and timing specifications used by the Internet to connect dissimilar systems
and control the flow of information.
Protocol
i. An Internet address
is used with HTTP in the format type://address/path.
URL (Uniform
Resource Locator)
j. A program that
enables the user to view Web pages, navigate Web sites, and move from one Web
site to another.
Web Browser
k. A collection of
related Web pages.
Website
l. A document developed
using HTML and found on the World Wide Web.
Web Page
m. A Web site that uses
powerful data-searching techniques to help the user locate Web sites containing
specific types of content or information.
Search Engine
n. To receive a file
from a remote computer.
Download
o. To send a file to a
remote computer.
Upload
p. A method that allows
users to enter and operate a computer or network from a remote location via the
Internet.
Remote Login
q. A versatile remote
desktop tool that allows users to access and operate computers from remote
locations.
Remote Desktop
Protocol (RDP)
r. A popular remote
access and support program that enables users to connect to and control
computers and other devices from a faraway location.
Team Viewer
s. The HTTP addition
enables secure communication across a computer network, specifically the
Internet.
HTTPS
t.A common network
protocol for exchanging files between a client and a server across the
Internet.
FTP (File
Transfer Protocol)
u.A technology that
creates a secure and private connection over the Internet.
VPN (Virtual
Private Network)
v. A method of sending
and receiving digital messages over the Internet.
Email
(Electronic Mail)
w. Online platforms and
applications allow people to create, share, and exchange information, ideas,
and multimedia content in virtual communities and networks.
Social Media
x. The essential to
protect your personal information and devices from cyber threats like viruses,
malware, or phishing attacks.
Cyber security
y.The software
applications that allow people to conduct virtual meetings, discussions, or
collaborations using video, audio, and text over the internet.
Video
Conferencing Tools
z.A collaboration and
communication platform developed by Microsoft.
Microsoft Teams
Short Answer Questions
a.
What is the Internet? Write its two uses.
The
Internet is a global network of interconnected computers that communicate using
TCP/IP.
Uses:
1.
Accessing information and knowledge.
2.
Communication via email, chat, and video conferencing.
b.
What is WWW? List out the components of [WWW](http://WWW).
The
World Wide Web (WWW) is a system of interlinked hypertext documents accessible
via the Internet.
Components:
Web browsers, web servers, websites, web pages, and hyperlinks.
c.
What is a VPN? Give two examples.
A
VPN (Virtual Private Network) is a secure connection over the Internet that
protects data and privacy.
Examples:
NordVPN, ExpressVPN.
d.
What is a web browser? Give an example.
A
web browser is software that allows users to access and navigate websites on
the WWW.
Example:
Google Chrome.
e.
Write down some examples of online meeting platforms.
Google
Meet, Zoom, Skype, Microsoft Teams.
f.
Write down some uses of Email.
·
Sending
and receiving messages.
·
Sharing
files and documents.
·
Professional
communication.
·
Subscription
to services and updates.
Long Answer Questions
a.
Define Search Engine. What are the uses of search engines? Write an example.
A
search engine is a web-based tool that helps users find information on the
Internet by entering keywords or queries.
Uses:
·
Locating
websites and web pages.
·
Finding
multimedia content (images, videos).
·
Academic
and professional research.
·
Shopping
and product comparison.
Example: Google.
b.
Explain the concept of Remote Login.
Remote
Login is a process that allows a user to access and operate a computer or
network from a different location using the Internet. It enables file access,
troubleshooting, and system management remotely.
c.
Write down the difference between HTTP and HTTPS.
|
Feature |
HTTP
(HyperText Transfer Protocol) |
HTTPS
(HyperText Transfer Protocol Secure) |
|
Security |
HTTP
is not secure, data is plain text. |
HTTPs
is Secure, data is encrypted. |
|
Usage |
It
is used for General browsing
|
It
is generally used for Online transactions, banking, logins |
d.
Explain the Virtual Private Network (VPN).
A
VPN (Virtual Private Network) is a technology that creates a secure, encrypted
tunnel over the Internet, allowing users to access the web privately and
safely. It hides the user’s IP address and protects data from hackers. VPNs are
used for secure browsing, bypassing geo-restrictions, and protecting sensitive
information.
e.
What is meant by social media? List out the uses of social media with its
examples.
Social
media refers to online platforms and applications that allow people to create,
share, and interact with content and communities.
Uses:
·
Communication
(WhatsApp, Facebook).
·
Sharing
information and media (Instagram, TikTok).
·
Professional
networking (LinkedIn).
·
Marketing
and brand promotion.
·
News
and awareness.
f.
Define blogs. Write down the advantages and disadvantages of blogging.
A
blog is a website or webpage that contains regularly updated written content,
usually in an informal or conversational style.
Advantages:
·
Easy
way to share ideas and information.
·
Enhances
online presence and branding.
·
Can
generate income through ads.
·
Encourages
knowledge sharing.
Disadvantages:
·
Requires
consistent updates and time.
·
Can
be subject to plagiarism.
·
May
attract negative comments or criticism.
·
Hard
to stand out due to high competition.