Question
How can be managed concurrency control in distributed system?
A. By applying locking method and lock managers deal with.
B. Time
C. By dead lock
D. A and B
A. By applying locking method and lock managers deal with.
B. Time
C. By dead lock
D. A and B
Answers
GPT-4o mini
Concurrency control in distributed systems can be managed through various methods, including:
A. **Locking methods**: This involves using locks to control access to shared resources. Lock managers can help ensure that only one transaction can access a resource at a time, thus preventing conflicts.
B. **Time-based methods**: These include timestamp ordering or other time-based protocols that help ensure that transactions are executed in a way that reflects their order of arrival, thereby preventing anomalies.
C. **Deadlock**: While dealing with deadlock management is a part of concurrency control, simply having deadlocks is not a method of controlling concurrency; rather, it is a situation that concurrency control aims to prevent.
Given the options you provided, the best answer would be **D. A and B**. Both locking methods and time-based methods are legitimate approaches to managing concurrency control in distributed systems, while deadlock is a situation that needs to be managed rather than a method.
A. **Locking methods**: This involves using locks to control access to shared resources. Lock managers can help ensure that only one transaction can access a resource at a time, thus preventing conflicts.
B. **Time-based methods**: These include timestamp ordering or other time-based protocols that help ensure that transactions are executed in a way that reflects their order of arrival, thereby preventing anomalies.
C. **Deadlock**: While dealing with deadlock management is a part of concurrency control, simply having deadlocks is not a method of controlling concurrency; rather, it is a situation that concurrency control aims to prevent.
Given the options you provided, the best answer would be **D. A and B**. Both locking methods and time-based methods are legitimate approaches to managing concurrency control in distributed systems, while deadlock is a situation that needs to be managed rather than a method.