6-Minute Test: Coding -Decoding - CLAT MCQ

• Steps to Encode "DATA":

• Shift each letter by 3:

• D → G
• A → D (vowel, remains in place later)
• T → W
• A → D (vowel, remains in place later)
  → "GDWD"

• Swap first and last consonants (G and W):
  → "WDGD"

1. Swap first/last consonants in "WOHUD" (W ↔ D) → "DOHUW".

2. Shift back by 3: D→A, O→L, H→E, U→R, W→T → "ALERT".

The passage clearly states that the cipher ensures security and accessibility for a trusted network, emphasizing simplicity and efficiency , showing that usability and context-aware communication were key goals.

Critics argue predictability makes the cipher vulnerable. However, limited exposure through short, context-dependent messages reduces the chance of successful pattern detection, thereby weakening the criticism.

Since Rule 2 involves swapping the first and last consonants, the presence of such a transformation implies that the word had at least two consonants before encoding.