Google Cloud Platform's _______ is a fully managed serverless data warehouse.
- BigQuery
- Cloud Storage
- Compute Engine
- Datastore
Google Cloud BigQuery is a serverless, highly scalable, and cost-effective multi-cloud data warehouse. It allows for super-fast SQL queries using the processing power of Google's infrastructure.
In a project with multiple developers, how would you utilize a collaboration tool to ensure smooth coordination and efficient code integration?
- Establish version control with Git, use branching for parallel development, and implement pull requests for code review
- Implement a single code file for all developers, use a shared password-protected document for communication
- Use email for code sharing, conduct daily in-person meetings, rely on individual IDEs for version control
- Utilize a shared network drive for code storage, schedule weekly team meetings, conduct manual code integration
In a collaborative development environment, leveraging version control with Git, branching, and pull requests is essential. This approach allows developers to work on features independently, ensuring smooth coordination and efficient code integration through code reviews and merges.
Which tool is commonly used for managing infrastructure as code in cloud environments?
- Ansible
- Docker
- Jenkins
- Terraform
Terraform is commonly used for managing infrastructure as code in cloud environments. It allows users to define and provision infrastructure using a declarative configuration language.
In a project where requirements are expected to evolve over time, which SDLC model would you recommend and why?
- Agile
- Spiral
- V-Model
- Waterfall
In a project with evolving requirements, Agile is recommended. Agile emphasizes adaptability, collaboration, and iterative development, making it suitable for projects where requirements are subject to change. It allows for continuous feedback and adjustments during the development process.
Which programming construct is commonly used for catching and handling errors in JavaScript?
- For loop
- If...Else statement
- Switch statement
- Try...Catch statement
In JavaScript, the Try...Catch statement is commonly used for catching and handling errors. It allows developers to execute code that might generate errors and gracefully handle them without disrupting the entire program flow.
What is the primary goal of the maintenance phase in the SDLC?
- Enhancing System Functionality
- Evaluating User Satisfaction
- Extending System Capabilities
- Fixing Defects and Issues
The primary goal of the maintenance phase in the SDLC is to fix defects and issues identified during the testing and production phases. It involves addressing software bugs, making necessary updates, and ensuring the continued reliability and performance of the software over time.
MongoDB is an example of a _______ database.
- Document-oriented
- Graph
- Key-value
- Relational
MongoDB is an example of a document-oriented database. It stores data in flexible, JSON-like documents, making it suitable for a variety of data models.
How does the query execution plan contribute to query optimization?
- It automatically optimizes queries
- It helps in organizing query execution steps
- It only displays results
- It reduces the number of tables in a query
The query execution plan organizes the steps for executing a query, helping to optimize performance. It provides insights into how the database engine will access tables and process data, aiding developers in fine-tuning queries.
A unique constraint ensures that _______ values are stored in a column.
- Duplicate
- Incremental
- Null
- Unique
A unique constraint ensures that unique values are stored in a column, preventing the insertion of duplicate values. It helps maintain data integrity by enforcing uniqueness.
What is the role of consistency level in distributed databases like Cassandra?
- Defines the uniqueness of values in a column
- Determines how up-to-date a read is required to be
- Manages the order of write operations
- Specifies the type of database consistency
The consistency level in distributed databases like Cassandra determines how up-to-date a read must be. It allows users to balance between the consistency and availability of the data in a distributed environment.