5. What is so great with the internet?
•The Internet (interconnected network)— also
known as the Net or Web— is the world’s largest
computer network.
•It was initially developed to aid in the progress
of computing technology by linking academic
computer centers.
6. Where did the Internet come from?
• ARPANET
• a project funded by the Department of Defense (DoD) in 1969
• as an experiment in reliable networking and to link DoD and
military research contractors, including many universities doing
military-funded research.
• ARPA stands for Advanced Research Projects Administration, the
branch of the DoD in charge of handing out grant money.
7. ARPANET
ARPANET started when the first two nodes were
established between UCLA (University of California)
and SRI (Stanford Research Institute) in 1969 followed
shortly after that by UCSB and the University of Utah.
The picture below is an example of what ARPANET
looked like in March 1977.
8.
9.
10. Sending Address
• To Computer C
• To Computer E
Send to the Internet
B Drops and
Forwards to C
C Receives and
Forwards to D
D Drops and
Forwards to E
E Receives and
End Transmission
ARPANET
11. Sending Address
• To Computer C
• To Computer E
Send to the Internet
Message
transmitted to
Computer E
Message not
transmitted to
Computer B
Message
transmitted to
Computer C
Message not
transmitted to
Computer D
INTERNET
12. In the early 1980s, the ARPANET grew into the early
Internet, a group of interlinked networks connecting many
educational and research sites funded by the National
Science Foundation (NSF), along with the original military
sites.
ARPANET
13. By 1990, it was clear that the Internet was here to stay,
and DARPA and the NSF bowed out in favor of the commercially
run networks that make up today’s Internet.
ARPANET
14.
15. •The Internet contains billions of web pages
created by people and companies from around
the world, making it a limitless place to locate
information and entertainment.
•The Internet also has thousands of services that
help make life more convenient.
16.
17. What is a computer network?
• a bunch of computers that communicate with each
other, sort of like a radio or TV network connects a
bunch of radio or TV stations.
• Computer networks are two-way: When computer A
sends a message to computer B, B can send a reply
back to A.
18. • Some computer networks consist of a
central computer and a bunch of remote
stations that report to it.
• Other networks, including the Internet, are
more egalitarian and permit any computer
on the network to communicate with any
other computer.
• Many wireless devices — cellphones,
tablets, and their ilk — expand the reach of
the Internet right into our pockets.
19. The Internet isn’t simply one
network — it’s a network of
networks, all freely
exchanging information. The
networks range from the big,
corporate networks to tiny
ones.
20. What is the excitement on the Internet?
New people you meet would rather give you an
email address than a phone number. Everyone seems
to be “going online” and “googling it.”
21. What is the excitement on the Internet?
When it comes to spreading information, the
Internet is the most significant invention since the
printing press. If you use a telephone, write letters,
read a newspaper or magazine, or do business or any
kind of research, the Internet can radically alter your
worldview.
22. What is the excitement on the Internet?
When people talk about the Internet, they usually
talk about what they can do, what they have found, and
whom they have met. The number of available services
is too huge to list in this chapter, but here are the Big
Three:
23. 1. Electronic mail (email):
• This service is certainly the most widely
used — you can exchange email with
millions of people all over the world.
• People use email for anything for which
they might use paper (mail, faxes, special
delivery of documents) or the telephone
(gossip, recipes, love letters) to
communicate.
24. 2. The World Wide Web
•When people talk these days about surfing the Net,
they often mean checking out sites on this global
multimedia hyperlinked database.
•In fact, people are talking more about the web and
less about the Internet. Are they the same thing?
25. 2. The World Wide Web
Technically, the answer is “No.” But
practically speaking, the answer for many people
is “Pretty close.”
26. The Fathers of the Internet
Vinton G. "Vint" Cerf Bob Kahn
28. 3. Instant messaging (IM’ing)
Programs such as Facebook Messenger and
WhatsApp let you send messages that “pop up” on the
recipient’s screen. We hear tales of nimble-fingered
youth carrying on upward of 13 IM sessions
simultaneously. Some websites also provide
messaging services.
29.
30. Anybody Can Access It
• One great thing about the Internet is that it is the most open
network in the world.
• Thousands of computers provide facilities that are available
to anyone who has Internet access.
• Although pay services exist (and more are added every day),
most Internet services are free for the taking after you are
online.
31. ISP Providers in the Philippines
1. Converge ICT Solutions
2. One SKY
3. PLDT
4. Globe Broadband
5. Smart Broadband
32. One significant change in Net use in
the past few years has been the move
to ever smaller, lighter, and cheaper
equipment to connect to it.
A netbook is a small, inexpensive
computer, about the size and weight of
this book, that is intended mainly for
connecting to the Net.
33. The Net Advantage
1. Information, knowledge, and learning
2. Connectivity, communication, and sharing
3. Address, mapping, and contact information
4. Banking, bills, and shopping
5. Selling and making money
6. Collaboration, work from home, and access to a global workforce
7. Donations and funding
8. Entertainment
9. Cloud computing and cloud storage
34. 1. Information, knowledge and learning
• Using a search engine like Google, you can ask virtually
any question and find a web page with an answer to and
information about that question.
• There are also millions of videos on sites like YouTube
explaining various topics, and even online courses to help
teach you about many different subjects.
35. 2. Connectivity, communication, and sharing
• In the past, it would take days and sometimes even
months to receive a letter from someone else.
• Today, with the Internet, you can send an e-mail to
anyone in the world and often have it delivered in less
than a minute
36. 3. Address, mapping, and contact information
• With the help of GPS technology, the
Internet helps map and direct you to
almost every place in the world.
• You can quickly route to your location or
find businesses in your area that may sell
or provide you with a service you need.
37. 4. Banking, bills, and shopping
• The Internet provides access to your bank
account to view the balance, make
transactions, and send money.
• Online shopping is another huge
advantage of the Internet, giving people
the ability to find products of interest and
buy them without having to visit a store.
38. 5. Selling and making money
• If you are a business or want to sell
products and services, the Internet is a
perfect place to sell most goods.
• Because anyone in the world with Internet
access can find your website, you have
access to more potential customers than
you ever could with a local retail store.
39. 6. Collaboration, work from home, and access to
a global workforce
• An Internet connection provides many
people with the ability to work from home
or have a virtual office.
• Today, many businesses allow their
employees to work from home using their
computers and Internet connection.
40. 7. Donations and funding
• With access to a much wider audience, anyone with an Internet
connection can quickly donate to their favorite charity or help
fund projects and ideas that interest them.
• Also, those looking for charity can find many online services
that help make it easier to help donate or support their causes
41. 8. Entertainment
The Internet gives everyone access to an
endless supply of entertainment, with access to
watch videos, watch movies, listen to music, and
even play games online.
42. 9. Cloud computing and cloud storage
With cloud computing, a device can have
access to more powerful computers and
even supercomputers to perform complex
tasks while you or your business work on
other tasks.
43. The Net Disadvantage
1. Bullying, trolls, stalkers, and crime
2. Pornographic and violent images
3. Addiction, time waster, and causes distractions
4. Never being able to disconnect from work
5. Identity theft, hacking, viruses, and cheating
6. Spam and advertising
7. Health issues and obesity
8. Buying things you don't need
44. 1. Bullying, trolls, stalkers, and crime
• Anyone who has spent time on the Internet has encountered trolls or
abusive people.
• Another issue that has increased over the years is cyberbullying.
• With people sharing information on the Internet, stalkers may experience
less difficulty finding personal information about others through various
means.
• Hidden places on the Internet and the deep web can be places for
criminals to conduct business without as much fear of being caught.
45. 2. Pornographic and violent images
• While there are amazing resources, such as Wikipedia, less
desirable content also exists.
• Consequently, users can accidentally come across violent
or pornographic images that they may not want to view.
46. 3. Addiction, time waster, and causes distractions
• Surfing and playing games on the Internet can quickly
become very addictive.
• Doing so can lead to spending a lot of frivolous time on the
Internet, instead of doing something productive.
47. 4. Never being able to disconnect from work
• The Internet is great for giving its users the ability to work
from anywhere.
• However, you may be expected to be available to work at any
time of the day, even if you had not previously agreed to be
available.
• For example, you may be at home and get a notification of an
important work-related e-mail and end up working without
getting paid.
48. 5. Identity theft, hacking, viruses, and cheating
• With access to billions of computers, computer
hackers and malicious users can hack accounts and
steal personal information that could be used for
identity theft.
• The Internet also connects all computers to each other,
so hackers can scan millions of computers and quickly
identify what computers are vulnerable to attack.
• The Internet also enables students to cheat on their
studies or find others on the Internet to do their
homework.
49. 6. Depression, loneliness, and social isolation
• Social networking sites can also lead to depression as many
people tend to compare their lives with others.
• The Internet and online games facilitate communication
with others.
• Although you may find new connections around the world,
you may also find yourself disconnecting from those in your
real life
50. 7. Health issues and obesity
• As with watching TV, spending too much time on the
computer surfing the Internet or playing games can also
lead to obesity and an unhealthy lifestyle.
• A computer also requires a lot of repetitive movement can
lead to carpal tunnel syndrome.
51. 8. Buying things you don't need
• The Internet reduces the barriers for consumers to make
purchases, so users may find themselves purchasing
products without putting much thought into whether they
should.
• Also, for some people, buying items on the Internet can
become so addictive that it causes serious debt.
