Consider a scenario where a software system, after a certain period, starts to decline in performance and user satisfaction. Discuss how different software evolution models might be deployed to revive and enhance the system.
- Use a patchwork approach
- Apply a complete system rewrite
- Implement performance optimization
- Continue with the existing system
When a software system experiences performance and user satisfaction issues, it's essential to consider performance optimization as a software evolution strategy. This involves identifying bottlenecks and improving system efficiency to enhance performance. A complete rewrite is costly and risky, and patchwork approaches may not address the root issues. Performance optimization is a targeted approach for improvement.
Why is it important to isolate the unit from the rest of the software system during Unit Testing?
- To make testing faster
- To reduce the cost of testing
- To simplify the testing process
- To identify defects in the unit without interference
Isolating the unit from the rest of the software system during Unit Testing is essential to identify defects in the unit without interference from other components. It allows testers to focus on the specific unit being tested, making it easier to detect and address issues within that unit. This isolation is crucial for effective Unit Testing.
Fill in the blank: "The _____ attribute relates to the ease with which a software product can be transferred from one hardware or software environment to another."
- Scalability
- Reliability
- Portability
- Usability
Portability is the attribute that concerns the ease of transferring a software product from one environment to another, be it different hardware, software, or operating systems. This is important for making software versatile and adaptable.
Which software evolution model is focused on re-creating a system from scratch?
- Waterfall Model
- Incremental Model
- Spiral Model
- Big Bang Model
The Big Bang Model focuses on re-creating a system from scratch. It's a risky approach where the old system is entirely replaced with a new one.
What is the main objective of regression testing in the software development life cycle?
- To verify new features
- To identify defects in the initial code
- To ensure that new code changes do not introduce new defects in existing functionality
- To improve code performance
The main objective of regression testing is to ensure that new code changes do not introduce new defects or issues in the existing functionality of the software. It helps maintain the overall quality and reliability of the software.
How does Equivalence Partitioning play a role in Black Box Testing?
- It helps identify invalid inputs
- It focuses on specific inputs
- It tests only functional requirements
- It is not relevant to Black Box Testing
Equivalence Partitioning is a Black Box Testing technique that divides the input domain into equivalence classes, ensuring that the test cases represent different valid and invalid partitions. This helps to identify specific inputs for testing and ensures comprehensive coverage.
How does the Chain of Responsibility design pattern decouple the sender and receiver objects?
- By making the sender and receiver objects tightly coupled
- By having a single object handle all requests
- By allowing multiple objects to handle a request in a chain
- By making the sender object directly call the receiver object
The Chain of Responsibility design pattern decouples the sender and receiver objects by allowing multiple objects to handle a request in a chain. Each handler in the chain decides whether to process the request or pass it to the next handler. This decoupling ensures that the sender doesn't need to know the specific receiver and can be more flexible.
Unit Testing aids in the discovery of _____ in the initial phases of software development.
- Design flaws
- Syntax errors
- Documentation issues
- Database problems
Unit Testing helps in the discovery of design flaws in the initial phases of software development. It identifies issues related to how the code is structured and whether it aligns with the design and requirements. Detecting and addressing design flaws early can save time and resources in the long run.
What does the acronym "DBMS" stand for in the context of database design?
- Database Model Selection
- Database Management System
- Data Backup and Management Service
- Data Broadcasting and Messaging System
DBMS stands for Database Management System. It is software that allows users to interact with and manage databases, including tasks like data storage, retrieval, and data manipulation.
OAuth is a widely adopted open standard for access delegation commonly used for _____ authorization in APIs.
- Read
- Write
- User
- Token
OAuth is commonly used for "Token" authorization in APIs. OAuth allows a client to access resources on behalf of a resource owner, and it typically involves the use of access tokens for authorization.