ICT-242 10

Arpanet first, then NSFnett

To transfer a packet across

To create an error-free end-to-end connection over the Internet.

An IP address identifies a computer's connection to the Internet, while a port address identifies a particular application on that computer.

UDP creates an error-free connectionless connection while TCP creates an error-free connection-oriented connection.

To speed packets through routers

ICMP returns an error message to the sender when an error happens during IP

No. DHCP dynamically assigns IP addresses to machines that need them, while NAT can substitute an IP address when the packet leaves the user's premises.

The World Wide Web is one service of the Internet.

Used to transfer web pages across the Internet.

Much simpler, relatively English-like, does not require loops or decisions.

To identify every document on the Internet.

SERVICE, HOST NAME, DIRECTORY INFO, FILENAME.

DNS uses a distributed database system of URL address.

Classes A through D (using classful addressing)

Used to download and upload files across the Internet.

To allow a remote user to login to a computer system via the Internet.

More reliable within a business (better throughput).

Voice over frame relay, and voice over ATM.

Send, receive, archive e-mail messages; group mailings; listservs.

SMPT used to transfer an e-mail, and POP3 and IMAP used to hold and later access e-mail messages.

Used to support an e-mail based discussion group on a particular subject of interest.

A real time streaming protocol and a software viewer.

It is instant and usually only one or two lines of data.

There have been several attempts to create a unified standard for instant messaging: IETF's SIP (Session Initiation Protocol) and SIMPLE (SIP for Instant Messaging and Presence Leverage), APEX (Application Exchange), Prim (Presence and Instant Messaging Protocol), the open XML-based XMPP (Extensible Messaging and Presence Protocol), more commonly known as Jabber and OMA's (Open Mobile Alliance) IMPS (Instant Messaging and Presence Service) created specifically for mobile devices

EDI is one facet of e-commerce.

A small set of data stored on a user's computer. Created by a web server, they are stored in a file or files on the computer's hard disk.

An intranet is an internal Internet that is usually only open to employees of a company. An extranet is an interconnection of intranets.

They allow a remote user to create a secure connection across the Internet into the user's corporate computing system.

Smaller, simpler header; bigger IP addresses; better security; quality of service added.

High speed, high bandwidth for computationally intensive applications.

VoIP sends voice and data over an IP connection. This IP connection can exist within a corporate wired local area network or over the Internet. VoWLAN transmits voice and data over a wireless local area network.