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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.
What does a Standard IP Access-list use as test criteria Ans) Standard IP access list use only source address.
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
How is NAT executed
You are requested to design a secure home or small scale network (Fig. 1) to satisfy the key concepts underlying computer and network security: confidentiality, integrity, availabi
Q. What is Data traffic? Data traffic Peak data rate : max data rate of the traffic Average data rate = (amount of data)/time Maximum Burst size: max. l
Illustrate the working of networking Bus Topology All stations attach, by appropriate hardware interfacing called as a tap, directly to a linear transmission medium, or bus. F
Q. Why we use numbering frames? Why numbering frames? Stop--and-wait ARQ, 1. Numbering Frames prevents the retaining of duplicate frames.. 2. Numbered acknowled
Calculate data bandwidth requirements from and to each site.
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a) Which of the well-known Internet applications uses a separate TCP connection for control? b) The separate control connection as in (a) above is an example of control (sig
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