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Which entity can assume an IAM role in AWS?

easy📝 Conceptual Q2 of 15
AWS - Identity and Access Management
Which entity can assume an IAM role in AWS?
AAWS services, users, or external accounts with trust permissions
BOnly AWS root account
COnly AWS users within the same account
DOnly EC2 instances
Step-by-Step Solution
Solution:

  1. Step 1: Identify who can assume roles

    IAM roles can be assumed by AWS services, IAM users, or external AWS accounts if the trust policy allows it.

  2. Step 2: Evaluate options

    AWS services, users, or external accounts with trust permissions correctly includes all possible entities. The other options are too limited.

  3. Final Answer:

    AWS services, users, or external accounts with trust permissions -> Option A

  4. Quick Check:

    Role assumption = Trusted entities including services and accounts [OK]
Quick Trick: Trust policy defines who can assume the role [OK]
Common Mistakes:
  • Assuming only users in same account can assume roles
  • Thinking only EC2 can assume roles
  • Believing root account is the only entity

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