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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.
Fundamental of Network The concept of network is not new. In simple it means an interconnected set of some objects. For decades we are familiar with the radio, televi
design issues
Q. What is an Error? At any time bits flow from one point to another they are subject to unpredictable changes because of interference The interference is able to change the
Controlling and monitoring access to the Intranet Digital certificates provide excellent means of controlling and monitoring access to the Intranets. The certificate itself act
Control Frame: claim_token Consider first station turned on Station notices no tokens Sends claim_token No competitors, so makes a ring of just itself P
We studied Dijkstra's link-state routing algorithm for computing the unicast paths that are individually the shortest paths from the source to all destinations. The union of these
Simplicity The advantage of this approach is the simplicity of receiver buffering. The receiver need not buffer out of order packets the sender must maintain the upper an
Illustrate the Bellman-Ford algorithm The Bellman-Ford algorithm uses only on information from its neighbours and knowledge of its link costs, to update it costs and paths. Dij
Consider the similar conditions as the last problem, except for the following: what's the minimum possible response time for the 1 Gbps and a 1 Mbps line? What does the diffrentia
Token Bus Sublayer Protocol Send for some time then pass token If no data after that pass token right away Traffic classes 0, 2, 4 and 6 (highest) Internal s
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