System Administrator 2026 — Test 71

Correct Answer: D. D. All of the mentioned

Correct Answer: D. D. Crucial

Correct Answer: C. C. They are distributed throughout the system

Correct Answer: A. A. When a process capability is revoked then it won’t be able to reacquire it

Correct Answer: C. C. This scheme is not adopted in multics system
Explanation: In the Back-Pointers scheme for revoking capabilities, a list of pointers is intentionally maintained from each object back to every capability that has been issued for it. This allows the system to follow the pointers and invalidate or change the capabilities when access rights need to be revoked. This specific scheme was adopted in the MULTICS system.

Correct Answer: A. A. Capabilities point indirectly to the objects

Correct Answer: B. B. Set-key

Correct Answer: A. A. It consists of known access rights and interpreted by the system

Correct Answer: A. A. This scheme allows a procedure to be certified as trustworthy

Correct Answer: B. B. Service program can malfunction and retain some rights of data provided by user
Explanation: Both calling program and service program are vulnerable to access each others private data/rights.