Skill Assessment & Placement Test

API Development

1. What is GraphQL mainly used for?

Database management API query language Operating systems CSS styling

Computer Science Fundamentals

2. Which data structure uses the LIFO (Last In First Out) principle?

Queue Stack Array Graph

Artificial Intelligence

3. How do Ensemble Methods (like Random Forests) improve predictions?

By combining predictions from multiple individual models (e.g. decision trees) to reduce variance and improve generalization. By migrating data models to cloud databases. By increasing the memory of the host processor. By running training loops faster.

DevOps

4. What is the primary advantage of running Jenkins Agents as Docker containers rather than static VMs?

Docker is owned by Jenkins Containers spin up instantly, provide a clean isolated environment for every build, and are destroyed immediately after, eliminating "it works on my machine" issues Containers are slower but safer Containers do not require the internet

Artificial Intelligence

5. What is a 'Target' in supervised learning?

The training accuracy threshold. The output variable or label the model is being trained to predict. The server directory path. The hardware processing target.

Cyber Security

6. What does the acronym OWASP stand for?

Open Web Application Security Project Operating Web Access Security Protocol Optical Wide Area Security Platform Open Source Writing Security Standard

Programming Languages

7. What is the correct syntax to take user input in Python 3?

scanf("Enter: ") input("Enter: ") cin >> x read("Enter: ")

DevOps

8. In Jenkins, what are "Artifacts"?

Old configuration files The resulting files produced by a build (e.g., compiled .jar files or .zip archives) that are saved for deployment or downloading Plugins that are no longer supported The Jenkins logo

Computer Science Fundamentals

9. Why is inserting an element at the beginning of a standard Array generally an O(n) operation?

Because the memory must be erased first Because all existing elements must be shifted one position to the right to make room Because arrays are linked Because you must sort the array first

API Development

10. What defines the root entry points for a GraphQL API?

The Root, Request, and Response objects The Query, Mutation, and Subscription root types defined in the schema The HTTP endpoints defined in Express The SQL table names

Cyber Security

11. What is the difference between active and passive reconnaissance in penetration testing?

Active recon is done on servers, passive recon is done on networks. Passive recon gathers data without directly interacting with target systems (e.g. WHOIS), whereas Active recon directly interacts with the target (e.g. port scanning). Passive recon requires root access, while Active recon runs as a guest user. There is no difference; they are synonymous.

Database Management

12. Which clause is used to sort the result-set in MySQL?

SORT BY ORDER BY ALIGN BY GROUP BY

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