it will help you to understand what is ISP (internet service provider)

1. ISP
Internet Service Provider
Waqar
Qudrat
Haroon

2. What is ISP..??
 An Internet service provider (ISP),
also sometimes referred to as an
Internet access provider (IAP), is a
company that offers its customers
access to the Internet.

3. Types of ISP
 Mailbox ISPs – Provide email mailbox
hosting services and email servers to
dispatch, receive, and store email.
 Hosting ISPs – Provide FTP (File
Transfer Protocol), public and private
clouds, web-hosting services, and
much more.
 Free ISPs – Also called free nets. The
give charge free services and
sometimes show advertisements
when users are linked to the service
provider.

4. Types of Internet services
ISPs provide internet services.
Some are:
 DSL – Digital Subscriber Line. The
cheapest of Cable and Fiber. Connects
clients to fast Internet bandwidth
connections over a phone system.
 Cable – Twice as fast than DSL. Shared
bandwidth, so the speed changes
depending on the number of users using
the same cable.
 Fiber – The most reliable internet service
compared to DSL and Cable

5. An Internet Service Providers
can be categorized
as:-
An Internet Service Providers are
categorized as:-
 1. Regional ISP’s
 2. National ISPs.

6. Regional ISP
 A regional ISP usually provides
Internet access to a specific
geographic area and usually has a
smaller technical support team

7. National ISP
 A national ISP is a business that
provides Internet access in cities and
towns nation wide and have a much
larger technical support team.

8. Different Types of ISP in
Pakistan
 PTCL
Service Type:
Broadband DSL, EVO 3G Wireless
broadband.
 Wateen
WiMAX Wireless broadband.
 Wi-tribe
EVDO Wireless broadband.
 Qubee Pakistan
EVDO Wireless broadband.
 COMSATS Internet Services
Broadband DSL.

9. TWA-1
telecommunicatio
ns cable linking
the United Arab
Emirates, Oman,
and Pakistan.

10. The Internet Hierarchy

11. Responsibility of an ISP
 • Providing and maintaining a connection to
the
 Internet
 • Support the hardware and software needed
to
 service that connection
 • To protect their site and network from
external
 threats such as viruses, hacker attacks and
other
 illegal activities
 • Provide 24-hour customer service and
technical

12. THANK YOU.