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Flashcards in IT Operations - The Internet Deck (3):

The Internet

A "network of networks" - global network of millions (billions) of interconnected computers and computer networks

World's largest client-server network

End-user access to Internet provided by ISPs

A markup or tagging a gauge specifies how data will be processed or displayed


Key Internet Protocols

1) Transmission control protocol/ internet protocol TCP/IP - Two core network protocols that underlie internet

A) Hypertext Transfer Protocol (HTTP) - foundation protocol for data transmission on Internet. part of TCP/IP protocol

B) Simple Mail Transfer Protocol (SMTP), Internet Message Access Protocol (IMAP) - Protocls for email services

C) In a packet-switched network, information grouped into packets for transmission. TCP/IP is a packet-switched network protocol. Internet is world's largest packet-switched network

2) Extensible Markup Language (XML) - Protocol for tagging documents for use on internet

A) Extensible Business Reporting Language (XBRL) - XML based protocol for encoding and tagging business information. Extnsible means users can create taxonomies for specific environments.

3) other protocols - Hypertext Markup Language (HTML) - core language for web pages. Basic building block prtotocol for constructing web pages

File Transfer Protocol (FTP) - Used for file transfer applcications

Instant Message (IM) - Protocol for instant messaging


Intranets and Extranets

Intranets and extranets -- Intranets and extranets are private (e.g. limited access) networks built using Internet protocols. Therefore, users can access network resources through their web browser rather than a proprietary interface. This substantially reduces training time for users and system development time for programmers. Thus, intranets and extranets are rapidly replacing traditional proprietary LANs and WANs:
Intranets -- Available only to members of the organization (business, school, association); intranets are often used to connect geographically separate LANs within a company.
Extranets -- Intranets that are opened up to permit associates (company suppliers, customers, business partners, etc.) to access data that is relevant to them.

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