Parallel Processing Quiz

What is parallel processing?

• A situation in which two or more CPUs are executing instruction simultaneously

• Is a form of multiprocessing

• Program Manager needs to coordinate the activity of each processor

• Program Manager needs to synchronize cooperative interaction between processor

How parallel processing can increase reliability?

• If one processor fails, then the others can continue to operate and absorb the load.

• The failing processor must inform the other processor to take over the job.

• OS must restructure its resources allocation strategies to ensure that the remaining processor doesn’t become overloaded.

• All of the above

How can parallel processing increase speed?

• Two or more instructions can be executed in parallel

• Instructions are subdivided within many CPU division so that the instruction can be processed simultaneously

• Two or more task can be completed by using one processor.

• All of the above

What is deadlock?

• A situation in which two or more competing actions are waiting for the other to finish, and thus neither ever does

• A method to increase processing speed

• A type of parallel processing

• None of the above

What are the 4 deadlock modeling?

• Mutual exclusion, resource holding, no preemption, circular wait

• Resource allocation, process synchronization, deadlock prevention, deadlock avoidance

• Process management, memory management, file management, I/O management

• None of the above

What is a semaphore?

• A counter that is used to indicate the status of a shared resource

• A type of processor

• A method of parallel processing

• None of the above

What is the purpose of the 'Wait and Signal' mechanism?

• To remove busy waiting

• To increase processing speed

• To manage resources

• None of the above

What does the value of a semaphore represent when it is positive?

• The number of threads that we can decrement without blocking

• The number of threads that are blocked and are waiting

• The number of available resources

• None of the above

What is the result of a deadlock in a network?

• No processes can proceed

• All processes complete successfully

• Only one process can proceed

• None of the above

What is the main advantage of multiprocessing?

• Increased reliability and processing speed

• Reduced cost of hardware

• Simplified programming

• None of the above