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BSNL, Reliance, Shaw cable, AOL, Tata Indicom all can be kept in which one of the following groups?
1. ISDN
2. IRC
3. ISP
4. ICONS

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Correct Answer - Option 3 : ISP

The national Internet service providers are backbone networks created and maintained by specialized companies. To provide connectivity between the end users, these back-bone networks are connected by complex switching stations (normally run by a third party) called network access points.

Internet service providers are categorized as:

International Service ProvidersAt the top of the hierarchy are the international service providers that connect nations together. 

National Service Providers:

  • The national Internet service providers are backbone networks created and maintained by specialized companies.
  • To provide connectivity between the end-users, these backbone networks are connected by complex switching stations (normally run by a third party) called network access points (NAPs).
  •  Some national ISP networks are also connected to one another by private switching stations called peering points. These normally operate at a high data rate.

 

Regional Service Providers:

  • Regional internet service providers or regional ISPs are smaller ISPs that are connected to one or more national ISPs.
  • They are at the third level of the hierarchy with a smaller data rate. 

 

Local Service Providers:

  • Local Internet service providers provide direct service to the end-users.
  • The local ISPs can be connected to regional ISPs or directly to national ISPs.
  • Most end-users are connected to the local ISPs

BSNL, Reliance, Shaw cable, AOL, Tata Indicom all come under the category of Internet service providers.

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