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Virtual Private Network (VPN) adds the features of both public and private networks. It is fixed to single organization and needs public network for connectivity.
These connections are sometimes known tunnels and connect sites. Every site sees tunnel as point-to-point link. There is no access for other clients of public networks.
GUARANTEEING ABSOLUTE PRIVACY:
In addition to restricting data packets, VPN machines use encryption to sure absolute privacy. Even if an outside does manage to retain a copy of the data packet the outside will be unable to interpret the message.
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Switch In a physical ring configuration any disabled or else disconnected node can disable the entire network Use of a switch can permit the ring to bypass an inactive
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What are Diagrams and Trigrams? The most ordinary two letter combinations are known as diagrams. e.g. th, in, er, re and an. The most common three letter combinations are known
Q. Show V.32 standard? - ITU-T's V.32 standard was issued in 1991 for asynchronous and full-duplex operation at 14.4 Kbps. V.32bis - Is an extension of the V.32 technology?
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Q. Example on Multiplicative Decrease? w = 1 for (each new ACK received) w = w+1 until (loss detected or w >= ssthresh) Not so slow - Exponential increase
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