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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.
SONET Frame Can be viewed as a matrix of nine rows of 90 octets every for a total of 810 octets. A few used for control they aren't positioned at the beginning or end of the
Why do we require to subtract two from number of hosts?
Network Allocation Vector Timer which shows how much time must pass before a station is allowed to check the channel
Q. Modem stands for modulator - demodulator ? - Modulator are to creates an analog signal from binary data - Demodulator are to recovers the binary data from the modulated s
MULTICASTING : The answer to above problem is multicasting. It is the normal form of broadcasting. It acts like broadcasting however it does not broadcast frames automatically
Can you describe the concept of NAT
design issues
Explain the meaning of bastion host?
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
Q. Explain the process of piggybacking? When a data frame arrives in its place of immediately sending a separate control frame and the receiver restrains itself and waits until
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