Software Testing FAQ'S - Infrastructure

FAQ'S Of Software Testing

Q154. What is a version description document (VDD)?
A: Version description document (VDD) is a document that accompanies and identifies a given version of a software product. Typically the VDD includes a description, and identification of the software, identification of changes incorporated into this version, and installation and operating information unique to this version of the software.

Q155. What is a vertical microinstruction?
A: A vertical microinstruction is a microinstruction that specifies one of a sequence of operations needed to carry out a machine language instruction. Vertical microinstructions are short, 12 to 24 bit instructions. They're called vertical because they are normally listed vertically on a page. These 12 to 24 bit microinstructions instructions are required to carry out a single machine language instruction. Besides vertical microinstructions, there are horizontal as well as diagonal microinstructions as well.
Q156. What is a virtual address?
A: In virtual storage systems, virtual addresses are assigned to auxiliary storage locations. They allow those location to be accessed as though they were part of the main storage.
Q157. What is virtual memory?
A: Virtual memory relates to virtual storage. In virtual storage, portions of a user's program and data are placed in auxiliary storage, and the operating system automatically swaps them in and out of main storage as needed.
Q158. What is virtual storage?
A: Virtual storage is a storage allocation technique, in which auxiliary storage can be addressed as though it was part of main storage. Portions of a user's program and data are placed in auxiliary storage, and the operating system automatically swaps them in and out of main storage as needed.
Q159. What is a waiver?
A: Waivers are authorizations to accept software that has been submitted for inspection, found to depart from specified requirements, but is nevertheless considered suitable for use "as is", or after rework by an approved method.
Q160. What is the waterfall model?
A: Waterfall is a model of the software development process in which the concept phase, requirements phase, design phase, implementation phase, test phase, installation phase, and checkout phase are performed in that order, probably with overlap, but with little or no iteration.
Q161. What are the phases of the software development process?
A: The software development process consists of the concept phase, requirements phase, design phase, implementation phase, test phase, installation phase, and checkout phase.
Q162. What models are used in software development?
A: In software development process the following models are used: waterfall model, incremental development model, rapid prototyping model, and spiral model.
Q163. What is SDLC?
A: A: SDLC is an acronym. It stands for "software development life cycle".
Q164. Can you give me more information on software QA/testing, from a tester's point of view?
A: Yes, I can. You can visit my web site, and on pages and you can find answers to many questions on software QA, documentation, and software testing, from a tester's point of view. As to questions and answers that are not on my web site now, please be patient, as I am going to add more answers, as soon as time permits.

Q165. What is the difference between system testing and integration testing?
A: System testing is high level testing, and integration testing is a lower level testing. Integration testing is completed first, not the system testing. In other words, upon completion of integration testing, system testing is started, and not vice versa. For integration testing, test cases are developed with the express purpose of exercising the interfaces between the components. For system testing, on the other hand, the complete system is configured in a controlled environment, and test cases are developed to simulate real life scenarios that occur in a simulated real life test environment. The purpose of integration testing is to ensure distinct components of the application still work in accordance to customer requirements. The purpose of system testing, on the other hand, is to validate an application's accuracy and completeness in performing the functions as designed, and to test all functions of the system that are required in real life.
Q166. What are the parameters of performance testing?
A: The term 'performance testing' is often used synonymously with stress testing, load testing, reliability testing, and volume testing. Performance testing is a part of system testing, but it is also a distinct level of testing. Performance testing verifies loads, volumes, and response times, as defined by requirements.
Q167. What types of testing can you tell me about?
A: Each of the followings represents a different type of testing approach: black box testing, white box testing, unit testing, incremental testing, integration testing, functional testing, system testing, end-to-end testing, sanity testing, regression testing, acceptance testing, load testing, performance testing, usability testing, install/uninstall testing, recovery testing, security testing, compatibility testing, exploratory testing, ad-hoc testing, user acceptance testing, comparison testing, alpha testing, beta testing, and mutation testing.
Q168. What is disaster recovery testing?
A: Disaster recovery testing is testing how well the system recovers from disasters, crashes, hardware failures, or other catastrophic problems
Q169. How do you conduct peer reviews?
A: The peer review, sometimes called PDR, is a formal meeting, more formalized than a walk-through, and typically consists of 3-10 people including a test lead, task lead (the author of whatever is being reviewed), and a facilitator (to make notes). The subject of the PDR is typically a code block, release, feature, or document, e.g. requirements document or test plan. The purpose of the PDR is to find problems and see what is missing, not to fix anything. The result of the meeting should be documented in a written report. Attendees should prepare for this type of meeting by reading through documents, before the meeting starts; most problems are found during this preparation. Preparation for PDRs is difficult, but is one of the most cost-effective methods of ensuring quality, since bug prevention is more cost effective than bug detection.

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