In Google Cloud Platform, what service is used for big data analytics?
- BigQuery
- Cloud Storage
- Datastore
- Pub/Sub
BigQuery is the Google Cloud Platform service specifically designed for big data analytics. It enables super-fast SQL queries using the processing power of Google's infrastructure, making it suitable for analyzing large datasets.
What feature of collaboration tools allows multiple developers to work on the same codebase simultaneously without interfering with each other's changes?
- Version Control
- Code Dependency
- Code Synchronization
- Collaboration Sync
The correct option is Version Control. Version control systems, such as Git, enable multiple developers to work on the same codebase concurrently by managing changes, merging edits, and maintaining a version history. This ensures seamless collaboration without conflicts.
In Gitflow, the _______ branch is created from the master branch for emergency fixes.
- develop
- feature
- hotfix
- release
In Gitflow, the hotfix branch is created from the master branch for emergency fixes. Hotfixes are used to address critical issues in the production environment directly.
In a distributed database system, what challenges might arise in terms of consistency, and how would you address them?
- Consistency models
- Distributed transactions
- Eventual consistency
- Strong consistency
Challenges in consistency in distributed systems can be addressed through techniques like distributed transactions, ensuring data consistency across multiple nodes.
Granular recovery allows for the restoration of _______ components rather than the entire system.
- Fine-grained
- Individual
- Particular
- Specific
Granular recovery enables the restoration of specific components or data points, offering a more fine-grained approach instead of restoring the entire system. This is useful for targeted recovery needs.
NoSQL databases are often used in scenarios where _______.
- ACID compliance is required
- Data is highly structured
- Scalability and high-performance are crucial
- Schema is predefined
NoSQL databases are often used in scenarios where scalability and high-performance are crucial. They excel in handling large volumes of unstructured or semi-structured data with a focus on horizontal scaling.
You're working on a team project, and your feature branch diverged significantly from the main branch. Which Git command would you use to integrate your changes without creating a messy merge history?
- git merge --no-ff
- git merge --squash
- git pull --rebase
- git rebase
The correct Git command to integrate changes from a diverged feature branch without creating a messy merge history is git rebase. It helps maintain a linear and cleaner history by incorporating the changes on top of the main branch.
What does the === operator do in JavaScript?
- Assignment
- Logical AND
- Strict equality comparison
- Type coercion equality comparison
The === operator in JavaScript performs strict equality comparison, meaning it checks both value and type. It returns true if the operands are equal without performing type coercion.
Which command is used to create a new branch in Git?
- git add
- git branch
- git checkout -b
- git commit -m
The command git checkout -b is used to create a new branch in Git. This command creates a new branch with the specified name and switches to it, allowing developers to start working on a new feature or bug fix.
Which SDLC model is known for its linear sequential flow of phases?
- Agile Model
- Spiral Model
- V-Model
- Waterfall Model
The Waterfall Model is known for its linear sequential flow of phases. In this model, each phase must be completed before the next one begins, making it a straightforward and easy-to-understand approach. However, it may lack flexibility compared to other models.