The "git merge --no-ff" command ensures a _______ merge.
- Non-Fast-Forward
- Force
- Recursive
- Annotated
The "git merge --no-ff" command ensures a Non-Fast-Forward merge. This option preserves the branch hierarchy, creating a new merge commit even if it could be fast-forwarded. It provides a cleaner history and better traceability.
In database design, a _______ is a collection of database objects, such as tables, views, and indexes.
- Cluster
- Index
- Schema
- Tablespace
In database design, a schema is a collection of database objects, such as tables, views, and indexes. It provides a logical structure for organizing and accessing data in a database.
In a pull request, you notice that a colleague has introduced a security vulnerability. How would you handle this issue to ensure the security of the codebase?
- Approve the pull request and fix the vulnerability later
- Comment on the pull request, highlighting the vulnerability, and suggest a fix
- Share the concern privately with the colleague
- Reject the pull request and discuss the issue with the team
Option d is the correct choice. Rejecting the pull request ensures that the vulnerability is not merged. Discussing it with the team promotes awareness and collaboration for a robust solution.
Which Git command is used to abort a merge in progress due to conflicts?
- git abort
- git merge --abort
- git merge --cancel
- git reset --merge
The correct Git command to abort a merge in progress due to conflicts is git merge --abort. This command cancels the merge operation and returns the working directory to the state before the merge started.
In SQL, the UPDATE statement is used to _______ data in a database.
- Delete
- Insert
- Modify
- Select
In SQL, the UPDATE statement is used to modify or update existing records in a database. It allows you to change the values of one or more columns in a specified table.
Which framework is commonly used for building single-page applications (SPAs) and is known for its flexibility and performance?
- Angular
- Express.js
- React
- Vue.js
React is commonly used for building single-page applications (SPAs) due to its flexibility and high performance. It allows developers to create dynamic and responsive user interfaces efficiently.
What does SQL injection refer to in the context of security vulnerabilities?
- Exploiting vulnerabilities in the SQL server
- Forcing a user to reveal their SQL credentials
- Injecting malicious code into a website's frontend
- Manipulating a database using Structured Query Language
SQL injection refers to manipulating a database using Structured Query Language. It is a security vulnerability where an attacker inserts malicious SQL statements into input fields, potentially gaining unauthorized access to the database or causing data manipulation.
Authorization mechanisms often rely on defining access _______ for different user roles.
- Keys
- Permissions
- Secrets
- Tokens
Authorization mechanisms often rely on defining access permissions for different user roles. Permissions determine what actions or resources a user with a specific role can access.
Which type of relationship is represented by a foreign key in a database?
- Many-to-Many
- Many-to-One
- One-to-Many
- One-to-One
A foreign key in a database represents a One-to-Many relationship. It signifies that the values in one column (or set of columns) correspond to values in another table's primary key column.
A critical component of your infrastructure failed unexpectedly. How would you use Infrastructure as Code to quickly recover and restore the system?
- Manually troubleshoot the component
- Redeploy the affected component using IaC scripts
- Rollback to a previous state manually
- Wait for the issue to resolve itself
In the event of a critical failure, Infrastructure as Code enables quick recovery by redeploying the affected component using pre-defined scripts. This allows for rapid and consistent restoration of the system to a known, stable state.
Which sorting algorithm has the best average-case time complexity?
- BubbleSort
- InsertionSort
- QuickSort
- SelectionSort
QuickSort typically has the best average-case time complexity among the given sorting algorithms. Its average-case performance is O(n log n), making it efficient for a wide range of scenarios. QuickSort utilizes a divide-and-conquer strategy to sort elements.
Which front-end framework allows developers to build interactive user interfaces using HTML templates and JavaScript?
- Angular
- Bootstrap
- React
- Vue.js
Vue.js allows developers to build interactive user interfaces using HTML templates and JavaScript. It is known for its simplicity and ease of integration.