Full presentation on Internet Service Provider.

1. ISP
Internet Service Provider

2.  What is an Internet Service Provider (ISP)?
A service (an access) provider is a business/company that
provides individuals and organizations access to the Internet free
or for a monthly or yearly fee.

3. *
 An Internet Service Providers are categorized as regional or
national ISPs.
 A regional ISP usually provides Internet access to a specific
geographic area.
 A national ISP is a business that provides Internet access in cities
and towns nationwide.
NOTE :-
 Other than Internet connection, ISPs may also provide related
services like Web site hosting & development, e-mail hosting,
domain name registration etc.

4. *
• 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 support

5. *
* Just as their customers pay them for Internet access, ISPs
themselves pay upstream ISPs for Internet access.
* An upstream ISP usually has a larger network than the
contracting ISP and/or is able to provide the contracting ISP with
access to parts of the Internet the contracting ISP by itself has no
access to.

6. *
* ISPs may engage in peering, where multiple ISPs interconnect at
peering points or Internet exchange points (IXs), allowing routing
of data between each network, without charging one another for
the data transmitted—data that would otherwise have passed
through a third upstream ISP, incurring charges from the upstream
ISP.
Upstream

7. *
*IP address is a 32-bit address. It is divided into four octets. Each
octet has 8 bits.
*It has two parts one is network address and second is host address.
*In local area network, we can use private IP address, which is
provided by IANA (Internet Assigning Numbering Authority). When
IP was first standardized, the specification required that each
system attached to an IP-based internet be assigned a unique, 32-
bitninternet address value.

8. *
Classes Range N/w bits Host bits Subnet mask
A 1-126 8 24 255.0.0.0
B 128-191 16 16 255.255.0.0
C 192-223 24 8 255.255.255.0
D 224-239 It is reserved
for multicast
It is reserved
for multicast
E 240-255 It is reserved
for
research/scient
ific use.
It is reserved
for
research/scient
ific use.

9. *
*Routing is the process of selecting best paths in a network.
In the past, the term routing was also used to mean
forwarding network traffic among networks.
*Routing is performed primarily in electronic data networks
using packet switching technology.

10. *
*Voice over IP (VoIP) is a methodology and group of technologies for
the delivery of voice communications and multimedia sessions over
Internet Protocol (IP) networks, such as the Internet. Other terms
commonly associated with VoIP are IP telephony, Internet
telephony, broadband telephony, and broadband phone service.

11. *
*Internet Service Provider (ISP)
*Application Service Provider (ASP)
*Business Service Provider (BSP)
*Wholesale Service Provider (WSP)
*Wireless Application Service provider (WASP)

12. QUESTIONS

13. Thank You