Coding-Decoding is process of enciphering and transmitting an information from one place to other using some suitable codes, so that it might be understood and used by the concerned person only.
Coding converts information into scrambled data.
Decoding unscrambles the meaningless data (deciphering) and fetches information out of it.
Different types of questions
Coding Based on Rearrangement of Letters
Coding Based on Replacement of Letters
Number & Symbol Coding
Mathematical Operations based Coding
Coding by Word Replacement
Fictitious Language Coding