HCL — Interview Questions
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50 Questions 5 Topics Take Test
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Showing 31–40 of 50 questions
Q.31 Easy 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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Q.32 Easy 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.33 Easy 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.34 Medium 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.35 Easy 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.36 Easy 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.37 Easy 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.38 Medium 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.39 Easy 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.40 Medium 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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