A code is ‘arrangement of signs’. Accordingly, coding is a process for transmitting a message between the sender and the recipient without a third individual knowing it.
The coding and decoding test is set up to judge the candidate’s capacity to interpret the rule that codes a specific word/ message and break the code to interpret the word. The article Coding - Decoding - Quiz 5 presents the important questions related coding and decoding topic.
Coding and decoding are divided into eight types. They are: 1. Letter coding 2. Direct letter coding 3. Number/Symbol coding 4. Matrix coding 5. Substitution coding 6. Deciphering message word coding 7. Deciphering number and symbol codes for messages 8. Jumbled coding
In this type of questions,

• some messages are given in the coded language


• the code for a particular word or a message is asked

Points to remember while solving this question:

• Compare any two messages bearing a common word


• Compare the codes of these two messages to find a common code-word


• This common code word will represent the common word in the message


• Repeat the same by picking all the possible combinations of common words from messages and thus determining the common code-words


• Thus the entire message can be decoded and the codes for individual words can be found

In a certain code SPIDER is written as PSDIRE in a certain code, how will be COMMON be written in that code.?

A. OCOMMO B. OCMNNO C. OCMMNO D. OCMMON