Final answer:
The statement about preventing a circular wait as an indirect method of deadlock prevention is technically false, since indirect methods tackle one of the four necessary conditions for deadlocks including circular wait. Constructive and destructive are indeed the two types of interference. A bar magnet dropped through a copper tube induces an electric current and preventing free riding is a technique to resolve the tragedy of the commons.
Step-by-step explanation:
False, the statement about preventing a circular wait as an indirect method of deadlock prevention is not accurate. The indirect methods of deadlock prevention aim to tackle one of the necessary conditions for a deadlock (mutual exclusion, hold and wait, no preemption, circular wait). By eliminating one of these conditions, we can prevent deadlocks. The idea of preventing a circular wait typically involves assigning a unique order to all resources and requiring that processes request resources only in a predetermined order, thus preventing the circular wait condition.
Regarding the statement on interference types, the statement is true. The two types of interference are indeed constructive and destructive interferences. Constructive interference occurs when two waves meet in phase and their amplitudes add together, leading to a larger amplitude, whereas destructive interference happens when two waves meet out of phase, and their amplitudes subtract from each other, which can result in a smaller amplitude or even cancellation.
When a bar magnet is dropped through a copper tube, the statement is true that it induces an electric current in the tube. This phenomenon is described by Faraday's law of electromagnetic induction, where a changing magnetic field within a conductor induces a current in the conductor.
One technique for resolving the tragedy of the commons is preventing free riding. This approach involves creating systems or policies to ensure that every user of a common resource contributes to its upkeep or is somehow held accountable, thereby reducing the incentive for individuals to overuse or deplete the resource without considering the impact on the community as a whole.