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Mail Access Protocols
The e mail message are usually sent to an email server that stores received message in the recipient e mail mailbox. The user retrieves message with either a web browser or an e mail client that uses one of a number of mail retrieval protocols.
Some clients and servers preferentially use vendor specific proprietary protocols. But most support the internet protocols, SMTP for sending e mail and POP3 ( post office protocols version 3) and IMP4 ( internet Mail Access protocols , version 4 for retrieving email allowing mterprebability with other servers and clients. SMTP can also be used for retrieving email. It is more suitable for permanent internet connection than say a dialup connection and is not supported by most e mail client software.
Q. What is Bus Topology? Multipoint configuration One cable acts like a backbone to link all devices Advantages: Effortlessness of installation and less cabling
What to do to connection with external communication For dealing with external communication, the Web server must have a static IP. Having a static IP could also be a problemat
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The Network Interface Layer The functions of the data link layer and the physical layer of the OSI model have been combined into a single layer called the network in
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Currently One more way of accessing the Internet being developed is the use of cable modems. These need that you subscribe to a cable service & let you two-way communication with t
Q. Describe Flow and Error Control Mechanisms? Flow and Error Control Mechanisms - Stop and Wait ARQ - Go-Back ARQ - Selective Repeat ARQ
MAC address called Physical address Because it's not changeable
Q. How is computer networks used in Financial services? Financial services: Today's financial services are totally depended on networks. Application includes credit history
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