Hadoop - SecurityGiven a Ranger policy that allows user 'alice' read access to database 'sales', what will happen if 'bob' tries to read from 'sales'?AAccess denied because 'alice' revoked 'bob's access manuallyBAccess granted because 'sales' database is publicCAccess granted because all users have read access by defaultDAccess denied because 'bob' is not in the policyCheck Answer
Step-by-Step SolutionSolution:Step 1: Understand policy scopeThe policy explicitly allows only 'alice' read access to 'sales'.Step 2: Check 'bob's access'bob' is not listed, so access is denied by Ranger's default deny rule.Final Answer:Access denied because 'bob' is not in the policy -> Option DQuick Check:Unlisted user access = Denied [OK]Quick Trick: Only listed users get access; others denied by default [OK]Common Mistakes:Assuming public access without policyThinking all users have default accessConfusing manual revocation with policy enforcement
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