Q#1. What Are The Major Issues Associated With Managing Product Line Evolution?
Ans. Adopting a product line paradigm creates an organizational shift. Managing product line evolution is the most difficult part of the paradigm. The product line will change as new versions of the current product come out. An organization would need to use the new versions to satisfy changing client needs. Additionally, new improvements to various components may change the way the products are built. New version of components may not be entirely backward compatible, thus additional rework will need to be done to accommodate the changes.
Q#2. What Is A Cluster?
Ans. A cluster is group of computer machines that can individually run a software. Clusters are typically utilized to achieve high availability for a server software. Clustering is used in many types of servers for high availability.
App Server Cluster
An app server cluster is group of machines that can run a application server that can be reliably utilized with a minimum of down-time.
Database Server Cluster
An database server cluster is group of machines that can run a database server that can be reliably utilized with a minimum of down-time.
Q#3. What Is The Basic Approach To Problem Solving In The Blackboard Framework?
Ans. The blackboard framework is a dynamic group of independent entities that communicate and work together in order to solve some common problem. The knowledge sources adds a solution piece to the blackboard data structure when they (independently) think it’s appropriate. There is no centralized control mechanism that makes decisions as to when a knowledge source needs to contribute some piece of information. Rather the control entity states the conditions of when and each knowledge source need to contribute. The knowledge sources observe the commotion on the blackboard and contribute to progress independently.
Q#4. Why Do You Need Clustering?
Ans. Clustering is needed for achieving high availability for a server software. The main purpose of clustering is to achieve 100% availability or a zero down time in service. A typical server software can be running on one computer machine and it can serve as long as there is no hardware failure or some other failure. By creating a cluster of more than one machine, we can reduce the chances of our service going un-available in case one of the machine fails.
Doing clustering does not always guarantee that service will be 100% available since there can still be a chance that all the machine in a cluster fail at the same time. However it in not very likely in case you have many machines and they are located at different location or supported by their own resources.
Q#5. What Is The Main Function Of The Hla?
Ans. The main function of the High Level Architecture is to establish a common infrastructure, or the foundation, for a building other components of a system. The infrastructure is then used and re-used by other components of a system that rely on communication and other resources through HLA. This non-software blueprint of a system has been used by the AMG to create an environment that supports interoperability and reusability. Interface specification is used to coordinate communication efforts of various components that are built on top of the HLA.
Q#6. What defines a software architect?
Ans. An architect is the captain of the ship, making the decisions that cross multiple areas of concern (navigation, engineering, and so on), taking final responsibility for the overall health of the ship and its crew (project and its members), able to step into any station to perform those duties as the need arises (write code for any part of the project should they lose a member). He has to be familiar with the problem domain, the technology involved, and keep an eye out on new technologies that might make the project easier or answer new customers' feature requests.