Skill Assessment & Placement Test

Database Management

1. Which keyword combines the result sets of two or more SELECT statements (removing duplicates)?

JOIN COMBINE MERGE UNION

Version Control & Git

2. What is the "Staging Area" in Git?

A server where the code is hosted A testing environment for the app A temporary space where changes are gathered and prepared before they are committed The final branch of a project

Frontend Development

3. What is the role of ComponentStore or services when managing component state in Angular?

They compile code to WebAssembly They store local data persistently in browser databases They isolate business logic from UI template layout, providing a single source of truth for component state They handle server routing

Web Development

4. What is the difference between <script> and <noscript>?

API Development

5. 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

Web Development

6. What is the correct doctype declaration for HTML5?

<!DOCTYPE HTML5> <!DOCTYPE html> </DOCTYPE html> <doctype html5>

Database Management

7. Which SQL clause limits the number of records returned?

LIMIT TOP MAX FETCH

Cyber Security

8. What is the difference between a Black Box and a White Box penetration test?

Black box testing is cheap, White box is expensive. Black box testers have zero prior knowledge of the target network, while White box testers have full access to architectural drawings and source code. White box is automated, Black box is manual. There is no difference.

Programming Languages

9. What is the difference between is and ==?

They are identical == checks value; is checks identity (same object in memory) is checks value; == checks identity is is for strings only

Version Control & Git

10. How do you rename the current branch?

git branch -r new_name git branch -m new_name git rename branch new_name git checkout -rename new_name

API Development

11. 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

Programming Languages

12. Which keyword is used to define a function in Python?

function define def fun

Featured

Browse All 21+ Subject Areas

Popular Topics

More Topics

Quick Links

Featured

Visual Algorithm Labs

Sorting Algorithms

Data Structures

Featured

Frontend Dev

Career Paths

Skill Tracks

Featured

The Future of Web Architecture in 2026

Categories

Community

Practice Quizzes

Skill Assessment

Send Feedback / Bug

Feedback Submitted!