a) What are the zero-one integer programming problems? Why are they so useful in

Question

a) What are the zero-one integer programming problems? Why are they so useful in real world situations? Briefly describe a real world example of a zero-one integer programming problem.

(b) Briefly explain the minimax regret criterion for decision making. Is this criterion an optimist, conservative, or middle of the road approach? Give a real world example where the minimax regret criterion can be useful.

(c) How is the simulation process used in Decision Sciences models? What are the advantages of using simulation? What are its limitations? How can a simulation model be verified? Give a real world example where using simulation is appropriate.

(d) Briefly describe the different types of queue systems. Give one real world example for each type.

Explanation / Answer

(d) The types of queue that WebSphere MQ supports for applications to use are:

The queue definition object, created when you define a local queue, holds the definition information of the queue as well as the physical messages put on the queue. The queue definition object, created when youdefine a remote queue, only holds the information necessary for the local queue manager to locate the queue to which you want your message to go. This object is known as the local definition of a remote queue. All the attributes of the remote queue are held by the queue manager that owns it, because it is a local queue to that queue manager.

A shared queue is a type of local queue whose messages can be accessed by one or more queue managers that are in a queue-sharing group. (This is not the same as a queue being shared by more than one application, using the same queue manager.) Shared queues are held by a coupling facility (CF), and are accessible by any queue manager in the queue-sharing group. Each shared queue in a queue-sharing group must have a name that is unique within that group. See the WebSphere MQ for z/OS Concepts and Planning Guide for a full discussion of shared queues and queue-sharing groups.

You can create a local queue dynamically from a WebSphere MQ program, naming the model queue that you want to use as the template for the queue attributes. At that point you can change some attributes of the new queue. However, you cannot change the DefinitionType. If, for example, you require a permanent queue, select a model queue with the definition type set to permanent. Some conversational applications can use dynamic queues to hold replies to their queries because they probably do not need to maintain these queues after they have processed the replies.

The cluster queue manager makes a local queue definition for the queue specifying the name of the cluster that the queue is to be available in. This definition has the effect of advertising the queue to the other queue managers in the cluster. The other queue managers in the cluster can put messages to a cluster queue without needing a corresponding remote-queue definition. A cluster queue can be advertised in more than one cluster.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.