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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.
What is a Counter A software code that indicates how many times a site has been visited. It gets automatically updated and is usually represented by a small rectangle with n
- Light source is LED (light-emitting diode) or a laser - LEDs are cheaper however not as precise (unfocused) limited to short-distance use - Lasers is able to have a narrow
Buffering This protocols provides the advantage of buffering to the receiver can buffer any out of order packets after being received by sending acknowledgment when
Difference among the communication and transmission. Transmission is a physical movement of information and concern issues like bit polarity, synchronisation, clock etc. Com
Initialization Imagine that all routers in our sample internetwork comes up at the same time. Each router sends a greeting packet to its neighbours to find out the sta
State about the international standardization There are many examples, certainly. Some systems for which there is international standardization include compressed disc players
FDDI Media Class B or SAS (single-attachment stations) attach to one ring Class A or DAS (dual attachment stations) attach to both rings. SASs is attached to the primary rin
Screening Router In this setup network router acts as a firewall. It checks all incoming and outgoing packets according to the predefined rules. This filter is placed at the c
Illustrate the term- Search Engine and Surfing Search Engine: Software used to find information on the Web. Examples are Google, Lycos and Yahoo. Server: A computer with
discuss the concept of redundancy in error detection and correction
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