Understanding Deadlock & Software Basics

What is a deadlock in the context of operating systems?

• A computer error message

• A situation where two processes are in a race condition

•  A state where two or more processes are unable to proceed because they are each waiting for the other to release a resource

• A system crash

What is the primary goal of deadlock detection and recovery strategies?

• To prevent deadlocks from occurring

• To preemptively terminate processes

• To detect and resolve deadlocks after they have occurred

• To increase the number of available resources

What is "mutual exclusion" as a condition for deadlock?

• It means that resources cannot be simultaneously accessed by multiple processes.

• It refers to processes waiting for a resource to become available.

• It is the condition where processes hold resources while waiting for additional resources.

• It involves a circular chain of processes waiting for each other.

Which scenario BEST demonstrates the concept of system deadlock?

• Process 1 needs resource A and is waiting for it to be released. Process 1 does not hold any other resources and it will complete as soon as resource B is available.

• Process 1 needs resource A. Process 2 needs resource A and B. Process 1 runs first and then releases resource A. At that point, process 2 runs as well.

• Process 1 needs resource A and is waiting for Process 2, which holds resource A to finish. Process 2 needs resource B will be available at some point.

• Process 1 uses resource A and needs resource B to finish. Process 2 uses resource B and needs resource A to finish. Both are waiting for their respective resources to be released.

John is working diligently on his assignment online. Suddenly, his screen freezes and his computer will not respond. More than likely, John's computer suffered from ...

• Poor Internet connection.

• System memory depletion.

• System overheating.

•  System deadlock.

What is a deadlock in computer science?

• A program that runs infinitely

• A situation where two processes are continuously swapping data

• A condition where processes are unable to proceed due to circular waiting

• A situation where multiple threads are running concurrently

Which of the following is NOT a necessary condition for a deadlock to occur?

• Mutual exclusion

• Hold and wait

• No preemption

• Process termination

Which resource allocation method can lead to deadlocks in a system?

•  Contiguous memory allocation

• Paging

• Segmentation

• All of the above

In the context of deadlock handling, what is "process termination"?

• Terminating all processes in the system to resolve a deadlock.

• Suspending processes until the deadlock is resolved.

• Refresh the computer.

• None of the above.

What is the primary purpose of a resource allocation graph used in deadlock detection?

• To represent the total number of resources available in the system.

•  To visualize the sequence of resource requests and releases for each process.

• To determine the execution order of processes.

• To identify and illustrate potential circular waiting conditions.