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Operating Systems · End Term · 13 Apr 2025 · January 2025 term · Set 1-2

Question 15: Which of the following statements correctly describe the…

Question 15

+3 marksOne or more correct options

Which of the following statements correctly describe the different implementations of the Access Control Matrix (ACM) model?

Select all that apply.

  1. A

    In the Capabilities implementation, each subject maintains a list of objects itcan access along with associated permissions.

  2. B

    The Access Control List (ACL) implementation stores permissions for eachobject rather than for each subject.

  3. C

    Delegation of access rights is easier in the ACL implementation compared tothe Capabilities implementation.

  4. D

    Revocation of access rights is easier in the ACL implementation compared tothe Capabilities implementation.

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Correct answers

  • A

    In the Capabilities implementation, each subject maintains a list of objects itcan access along with associated permissions.

  • B

    The Access Control List (ACL) implementation stores permissions for eachobject rather than for each subject.

  • D

    Revocation of access rights is easier in the ACL implementation compared tothe Capabilities implementation.

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Question 15 of 15 in the IIT Madras BS Operating Systems (Operating Systems) End Term paper sat on 13 Apr 2025, in the January 2025 term (IIT M DEGREE AN EXAM QDB4 13 Apr 2025). It carries 3 marks.

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