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HCL Questions

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Q.11 Medium HCL Questions HCL

Which sorting algorithm has the best average time complexity?

A Bubble sort

B Quick sort

C Linear sort

D Selection sort

Correct Answer: B. Quick sort

EXPLANATION

Quick sort has average time complexity O(n log n), better than bubble sort O(n²)

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Q.12 Easy HCL Questions HCL

What does CSS stand for?

A Computer Style Sheets

B Cascading Style Sheets

C Compiled Style Scripts

D Central Styling System

Correct Answer: B. Cascading Style Sheets

EXPLANATION

CSS (Cascading Style Sheets) is used for styling HTML elements

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Q.13 Medium HCL Questions HCL

Which of the following is NOT a cloud service model?

A SaaS

B PaaS

C IaaS

D DaaS

Correct Answer: D. DaaS

EXPLANATION

SaaS (Software as Service), PaaS (Platform as Service), IaaS (Infrastructure as Service) are main cloud models. DaaS is Data as Service but not standard

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Q.14 Easy HCL Questions HCL

What does HTTP stand for?

A HyperText Transfer Protocol

B High Transfer Text Protocol

C Home Telecom Transfer Protocol

D Hybrid Text Transfer Package

Correct Answer: A. HyperText Transfer Protocol

EXPLANATION

HTTP is HyperText Transfer Protocol, the foundation of data communication on the web

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Q.15 Easy HCL Questions HCL

Which keyword is used to define a class in Python?

A class

B Class

C define

D struct

Correct Answer: A. class

EXPLANATION

Python uses lowercase 'class' keyword to define classes

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Q.16 Easy HCL Questions HCL

What does OOP stand for?

A Object Oriented Programming

B Operating Order Protocol

C Open Online Platform

D Output Oriented Programming

Correct Answer: A. Object Oriented Programming

EXPLANATION

OOP (Object Oriented Programming) is a programming paradigm based on objects and classes

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Q.17 Medium HCL Questions HCL

What is the main difference between an array and a linked list?

A Arrays are slower

B Arrays use continuous memory; linked lists use scattered memory

C Linked lists can only store numbers

D Arrays are always smaller

Correct Answer: B. Arrays use continuous memory; linked lists use scattered memory

EXPLANATION

Arrays allocate continuous memory blocks; linked lists use nodes scattered in memory

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Q.18 Easy HCL Questions HCL

What is the purpose of version control systems like Git?

A To compile code

B To track changes and manage collaboration

C To execute programs

D To debug code

Correct Answer: B. To track changes and manage collaboration

EXPLANATION

Git is used to track code changes, manage versions, and enable team collaboration

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Q.19 Easy HCL Questions HCL

Which data structure uses LIFO principle?

A Queue

B Stack

C Array

D Tree

Correct Answer: B. Stack

EXPLANATION

Stack uses Last In First Out (LIFO). Queue uses FIFO (First In First Out)

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Q.20 Easy HCL Questions HCL

What does REST stand for in web development?

A Representational State Transfer

B Remote Exchange State Transfer

C Relational Execution State Transfer

D Resource Exchange System Transfer

Correct Answer: A. Representational State Transfer

EXPLANATION

REST stands for Representational State Transfer, an architectural style for APIs

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HCL Questions