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Q. What do you mean by Substitutional Ciphers?
Substitutional Ciphers
Monoalphabetic Substitution
Polyalphabetic Substitution
- Transpositional - characters retain their plaintext form but change their positions to create ciphertext.
- Text is organized into a two-dimensional table and columns are interchanged according to a key.
- Character frequencies are still preserved, however.
Connection Oriented Transport TCP In addition to providing reliable communication transmission control protocols effects errors control flow control and resequencing of
What are advantages of having e-commerce over extranets
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what are the categories of LAN
Drawback of Repeaters. Repeater has no filtering capability as it forwards every frame. Repeater shell be placed at accurate distance before actual signal becomes
bus topology disadvantage?
Q. Show the Congestion control in TCP? Congestion control in TCP TCP assumes that the cause of lost segment is due to congestion in the network Retransmission of
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