What does Git branching allow you to do?
- Clone a repository
- Delete files in a repository
- Track changes in a repository
- Work on different features simultaneously
Git branching allows you to work on different features simultaneously. It enables developers to create independent branches for each feature or bug fix, allowing for parallel development without affecting the main codebase.
Which SQL command is used to change data in a database?
- UPDATE
- MODIFY
- ALTER
- CHANGE
The SQL command used to change data in a database is UPDATE. It modifies the existing records in a table. The other options (MODIFY, ALTER, CHANGE) are used for different purposes in SQL.
In MongoDB, _______ is used for querying documents.
- JavaScript
- Query Language
- SQL
- find() Method
In MongoDB, the find() method is used for querying documents. It provides a flexible and powerful way to retrieve data from the database.
Two-factor authentication typically involves something you know and something you _______.
- Have
- Possess
- Are
- Own
Two-factor authentication typically involves something you know (e.g., a password) and something you possess (e.g., a mobile device or security token). The correct option completes the phrase appropriately.
How does structured logging differ from traditional logging approaches?
- Structured logging focuses solely on error messages, while traditional logging captures a broader range of events.
- Structured logging uses a predefined format like JSON for log entries, making them machine-readable and easier to analyze. Traditional logging relies on free-form text.
- Traditional logging is asynchronous, while structured logging is synchronous.
- Traditional logging is suitable for small-scale applications, while structured logging is reserved for large-scale systems.
Structured logging differs from traditional logging by adopting a predefined format like JSON, enabling machine-readable and analyzable log entries. This approach enhances log consistency and facilitates automated processing.
You're tasked with implementing a backup strategy for a highly sensitive database. Outline the key considerations and steps you would take to ensure robust backup and recovery processes.
- Define backup retention policies based on regulatory requirements
- Encrypt backup data to enhance security
- Implement a multi-tiered backup approach (full, incremental, differential)
- Regularly test backup and recovery processes
To ensure robust backup and recovery processes for a highly sensitive database, implementing a multi-tiered backup approach is essential. This includes full, incremental, and differential backups, providing a comprehensive strategy for data protection and efficient recovery.
Your team follows the Gitflow branching model, and a new release branch needs to be created. Describe the steps you would take to create and merge this branch efficiently.
- Create a new branch from develop for the release
- Create a new branch from master for the release
- Directly make changes in master
- Use git tag to mark the release
In the Gitflow branching model, to create and merge a new release branch efficiently, you would create a new branch from develop for the release. This ensures that features are stabilized in the develop branch before creating a release.
Which type of database is MongoDB?
- MySQL
- NoSQL
- PostgreSQL
- SQL
MongoDB is a NoSQL database. It stores data in flexible, JSON-like documents, allowing for a dynamic and scalable approach to data management.
Partitioning large tables based on certain criteria can improve _______ in query processing.
- Compression
- Data retrieval
- Indexing
- Parallelism
Partitioning large tables based on certain criteria can improve parallelism in query processing. It allows the database system to process multiple partitions concurrently, leading to faster query execution times.
What is inheritance in OOP and how does it facilitate code reuse?
- It is a mechanism to create a new class using the properties and behaviors of an existing class
- It is a method for defining variables in OOP
- It is a way to create instances of classes
- It is used for code duplication in OOP
Inheritance in OOP allows a new class (derived or child class) to inherit properties and behaviors from an existing class (base or parent class). It facilitates code reuse by promoting a hierarchical structure, reducing redundancy, and promoting modular design. The child class can reuse the methods and attributes of the parent class, promoting efficiency and maintainability.