Exam 6: Concurrent Processes

In general,parallel systems can be put into two broad categories: ____ level parallelism and instruction level parallelism.

A computer system that can support jobs that use multiple processors to execute sets of instructions in parallel is referred to as a ____ system.

When a programmer indicates in the code which instructions can be executed in parallel in a program (for example,using COBEGIN and COEND),it is called implicit parallelism.

The two operations defined by Dijkstra to be performed on a semaphore are ____.

In a master/slave system,the master processor is responsible for managing the entire system-all files,devices,memory,and processors.

Most current operating systems support the implementation of threads,or ____,which have become part of numerous application packages.

The classic problem of producers and consumers is one in which one or more processes produce some data that one or more processes consume later.

Each active thread in a process has its own processor registers,data area,and resources.

The two operations that can be performed on a semaphore variable are select and increment (P and V).

When multiprocessing takes place at the thread level,a high degree of synchronization is required to disassemble each process.

The common element in all synchronization schemes is to allow a process to finish work on a critical region of the program before other processes have access to it.

____ semaphores are used in the producer and consumer problem.

Multiprocessing can refer to one job using several processors to execute sets of instructions in parallel.

Java technology is used for many Web and Internet applications,and it integrates well with browsers that can run Java applets with audio,video,and animation directly in a Web page.

The ____ multiprocessing configuration is an asymmetric system.

The only tangible benefit of parallel processing systems is faster processing.

Lock and key synchronization must take place within a single ____.

In parallel computations,mutual exclusion is achieved automatically because each operation is handled in order,one at a time.

The Java ____ class is a collection of methods used to start,run,stop,and check the status of a thread.

In a loosely coupled system,a job may move from one processor to another during execution.