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Answer:

The transposition ciphers are based on the rearrangement of each charactor in the plain text messages to produce cipher-text.
let's see one simple example to illustrate this technique, encryption using message reversal means that the plain-text is written backwards to produce a cipher-text, the plain text as follows:
THIS IS AN EXAMPLE OF NETWORK SECURITY
Then the encrypted message reads (cipher-text) as :
YTIRUCES KROWTEN FO ELPMAXE NA SI SIHT

This is one of the simplest encryption to understand.

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