Skill Assessment & Placement Test

API Development

1. What is the N+1 problem in GraphQL?

A mathematical query error A performance issue where resolving a list of items causes the server to execute an additional database query for every single item's nested fields An issue with versioning schemas Adding too many mutations

Artificial Intelligence

2. What is a Confusion Matrix used for?

Documenting code compilation failures. A tabular layout mapping actual vs predicted classes, detailed for evaluating classification model performance. Formatting database index columns. Measuring server network latency.

Frontend Development

3. Which decorator is used to define a class as an Angular component?

@Module @Directive @Component @Injectable

Artificial Intelligence

4. What is the purpose of K-Fold Cross-Validation?

Splitting data into K separate databases for backups. Dividing the dataset into K folds, training K times on K-1 folds, and validating on the remaining fold to ensure robust evaluation. Compressing model file sizes. Accelerating CPU speed.

API Development

5. How do you pass a variable to a GraphQL query dynamically from the client?

Append it to the URL query string Use the $ prefix in the query definition and pass a separate JSON variables object Hardcode it inside the schema Send it via HTTP Headers

Version Control & Git

6. What is Git primarily used for?

Writing code in Python Version control and source code management Hosting websites Designing user interfaces

Cloud Computing

7. What does an Amazon RDS Multi-AZ deployment guarantee?

Lower monthly cloud billing rates. High availability and automated failover by replicating database data synchronously to a standby instance in a different AZ. Zero database read latency. Automatic column indexing.

Web Development

8. Which HTML5 element is used to draw graphics via JavaScript?

Web Development

9. Which element is used to group block-level content for styling?

Frontend Development

10. What does "lazy loading" routes do in Angular?

Delays page loading to show animations Loads feature modules on-demand only when a user navigates to their specific path, reducing initial load file size Caches all data locally Automatically logs out inactive users

Computer Science Fundamentals

11. Which data structure maps keys to values for highly efficient lookups?

Queue Linked List Hash Table (Dictionary) Stack

Cloud Computing

12. What does 'IAM' stand for?

Internal Access Manager Identity and Access Management Internet Authorization Mode Instance Allocation Model

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