Lab Quiz on Semaphores and Banker's Algorithm

What is the main purpose of using semaphores in the Producer-Consumer problem?

• To improve program speed

• To print buffer contents

• To synchronize access to shared resources

• To increase buffer size

Which type of semaphore ensures only one thread accesses the critical section at a time?

• Counting Semaphore

• Binary Semaphore / Mutex

• Shared Semaphore

• Deadlock Semaphore

In the given C program, which condition checks if the buffer is full?

• in == out

• (in+1)%bufsize == out

• buffer[in] == buffer[out]

• in > out

What does the wait(empty); operation represent in the Producer-Consumer problem?

• Waiting for buffer to become full

• Waiting for buffer to become empty

• Waiting for an empty slot to produce

• Waiting for a signal to exit

What is the main purpose of the Banker's Algorithm?

• CPU scheduling

• Memory allocation

• Deadlock avoidance

• Disk scheduling

Which of the following is not required for Banker's Algorithm?

• Maximum demand of each process

• Resources allocated to each process

• Priority of each process

• Total number of available resources

In Banker's Algorithm, a system is said to be in a safe state if:

• All processes can finish in some order

• No deadlock occurs

• There are enough resources for all processes

• Processes are blocked

What is the 'need' matrix in Banker's Algorithm?

• Max - Allocation

• Max + Allocation

• Allocation - Max

• Allocation + Available