Given this JWT payload: {"sub":"1234567890","name":"John Doe","iat":1516239022}, what does the iat field represent?

medium🧠 Conceptual Q13 of Q15

Rest API - Authentication and Authorization

Given this JWT payload: {"sub":"1234567890","name":"John Doe","iat":1516239022}, what does the iat field represent?

AIssuer of the token

BIssued at time

CExpiration time

DSubject identifier

Step-by-Step Solution

Solution:

Step 1: Understand JWT standard claims
Common claims include 'sub' (subject), 'iat' (issued at), 'exp' (expiration), and 'iss' (issuer).
Step 2: Identify meaning of 'iat'
'iat' stands for 'issued at' and marks the time the token was created.
Final Answer:
Issued at time -> Option B
Quick Check:
'iat' = issued at time [OK]

Quick Trick: 'iat' means when token was issued [OK]

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