198. c. An application software test log has several benefits. Reporting problems for the sake of reporting/compliance to a policy or a procedure is the least beneficial. What is done with the report is more important than just reporting. The other three choices are incorrect because they are the most important benefits. The log shows a record of all problems encountered during testing so events can be traced for verification. The log can also be used as a training tool for new testers because the log shows what happened in the past. Most of all, the log indicates what the tester did or did not do during testing. It forces testers to document the actions or decisions taken place during testing.
199. The application software test objective of verifying boundary conditions of a program is achieved in which of the following types of software testing approaches?
a. Stress testing
b. Conversion testing
c. Performance testing
d. Regression testing
199. a. Stress testing involves the response of the system to extreme conditions (for example, with an exceptionally high workload over a short span of time) to identify vulnerable points within the software and to show that the system can withstand normal workloads. Examples of testing conditions that can be applied during stress testing include the following: (i) if the size of the database plays an important role, then increase it beyond normal conditions, (ii) increase the input changes or demands per time unit beyond normal conditions, (iii) tune influential factors to their maximum or minimal speed, and (iv) for the most extreme cases, put all influential factors to the boundary conditions at the same time.
Stress testing can detect design errors related to full-service requirements of system and errors in planning defaults when system is overstressed.
Conversion testing is incorrect because it determines whether old data files and record balances are carried forward accurately, completely, and properly to the new system. Performance testing is incorrect because it measures resources required such as memory and disk and determines system response time. Regression testing is incorrect because it verifies that changes do not introduce new errors.
200. In which of the following system development life cycle (SDLC) models has the concept of application software reuse been incorporated?
a. Waterfall model
b. Object-oriented model
c. Prototype model
d. Spiral model
200. b. The notion of software component reuse has been developed with the invention of object-oriented development approach. After the design model has been created, the software developer browses a library, or repository, that contains existing program components to determine if any of the components can be used in the design at hand. If reusable components are found, they are used as building blocks to construct a prototype of the software.
The waterfall model is incorrect because it takes a linear, sequential view of the software engineering process. The waterfall method is another name for the classic software development life cycle.
The prototype model is incorrect because it is a process that enables the developer to create a model of the software built in an evolutionary manner.
The spiral model is incorrect because it is another type of evolutionary model. It has been developed to provide the best feature of both the classic life cycle approach and prototyping. None of these three choices provide for software reuse.
201. Security categorization is performed in which of the following phases of an application system development life cycle (SDLC)?
a. Initiation
b. Development/acquisition
c. Implementation
d. Operations/maintenance
201. a. Security categorization standards provide a common framework for expressing security needs. Categorization is based on an assessment of the potential impact (i.e., low, moderate, or high) that a loss of confidentiality, integrity, or availability of information systems would have on organizational operations, organizational assets, or individuals. It is a task performed in the initiation phase.
202. Configuration management and control is performed in which of the following phases of a system development life cycle (SDLC)?
a. Initiation
b. Development/acquisition
c. Implementation
d. Operations/maintenance
