Operating Systems Quiz

Which of the following statements is/are TRUE with respect to deadlocks?

• Circular wait is a necessary condition for the formation of deadlock.

• In a system where each resource has more than one instance, a cycle in its wait for graph indicates the presence of a deadlock.

• If the current allocation of resources to processes leads the system to unsafe state, then deadlock will necessarily occur.

• In the resource-allocation graph of a system, if every edge is an assignment edge, then the system is not in deadlock state.

Consider a system with 3 processes that share 4 instances of the same resource type. Each process can request a maximum of K instances. Resource instances can be requested and released only one at a time. The largest value of K that will always avoid deadlock is ____.

• 1

• 2

• 3

• 4

A system has 6 identical resources and N processes competing for them. Each process can request at most 2 resources. Which one of the following values of N could lead to a deadlock?

• 1

• 2

• 3

• 6

Which of the following is NOT a concept of Operating Systems?

• Process Concepts and CPU Scheduling

• Synchronization and Concurrency

• Deadlocks

• Divide and Conquer Method

Which of the following is a correct statement about memory management in Operating Systems?

• Memory management is responsible for managing the execution of processes.

• Memory management ensures that each process gets a fair share of CPU time.

• Memory management is responsible for allocating and deallocating memory to processes.

• Memory management is only required in multi-user operating systems.

Which of the following is NOT a function of a file system in Operating Systems?

• Managing files and directories

• Providing a way to store and retrieve data

• Controlling access to files and protecting them from unauthorized access

• Managing the execution of processes

Which of the following is a correct statement about CPU scheduling in Operating Systems?

• CPU scheduling is responsible for managing the execution of processes.

• CPU scheduling ensures that each process gets a fair share of memory.

• CPU scheduling is only required in single-user operating systems.

• CPU scheduling is responsible for allocating and deallocating memory to processes.

Which of the following is a correct statement about synchronization and concurrency in Operating Systems?

• Synchronization and concurrency are the same concepts in Operating Systems.

• Synchronization is the process of coordinating the execution of multiple threads to ensure their correct and orderly execution.

• Concurrency is the process of executing multiple threads simultaneously.

• Synchronization and concurrency are not important in multi-threaded applications.

Which of the following is a correct statement about deadlocks in Operating Systems?

• Deadlocks occur when two or more processes are waiting indefinitely for an event that can be caused by only one of the waiting processes.

• Deadlocks can be easily resolved by restarting the computer.

• Deadlocks can never occur in a multi-threaded application.

• Deadlocks occur when a process is waiting for a resource that is held by another process, which in turn is waiting for a resource held by the first process.

How many resources can a process request in a system with 6 identical resources?

• Exactly 6

• Only 1

• None

• Any number