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What is the primary purpose of token validation in a NestJS application?

easy📝 Conceptual Q1 of 15
NestJS - Authentication
What is the primary purpose of token validation in a NestJS application?
ATo generate a new token for the user
BTo verify the authenticity and integrity of the token
CTo store the token in the database
DTo encrypt the user's password
Step-by-Step Solution
Solution:

  1. Step 1: Understand token validation purpose

    Token validation checks if a token is genuine and untampered.

  2. Step 2: Differentiate from token generation and storage

    Generating or storing tokens are separate processes from validation.

  3. Final Answer:

    To verify the authenticity and integrity of the token -> Option B

  4. Quick Check:

    Token validation = Verify authenticity [OK]
Quick Trick: Validation means checking token correctness, not creating it [OK]
Common Mistakes:
  • Confusing validation with token creation
  • Thinking validation stores tokens
  • Assuming validation encrypts passwords

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