Stale Data Occurs in Multi-CPU Machines When One Thread Modifies

question 45

Multiple Choice

Stale data occurs in multi-CPU machines when one thread modifies shared data and a second thread accesses that data later, but sees the data value before the change took place. What is required to guarantee that the second thread sees the updated data, not stale data?

• A) The second thread should not try to acquire the lock.
• B) The first thread should not try to acquire the lock.
• C) Neither thread should use locks.
• D) The first thread should release the lock after changing the data.

---

Definitions:

Middle Adulthood

A phase in the human lifespan, typically from about 40 to 65 years of age, characterized by stability, maturity, and increased responsibility.

Family

A social unit consisting of parents and their children, considered as a group, whether dwelling together or not.

Friends

Individuals who share a mutual connection of affection with someone, usually excluding romantic or familial ties.

Psychological Problems

Issues or disorders affecting an individual's mental health and well-being, potentially impacting their thoughts, emotions, and behavior.