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Q.221 Medium Capgemini Questions Capgemini

What is the main difference between ArrayList and LinkedList in Java?

A ArrayList is faster for random access

B LinkedList is faster for random access

C Both have same performance

D ArrayList uses more memory

Correct Answer: A. ArrayList is faster for random access

EXPLANATION

ArrayList provides O(1) random access, while LinkedList provides O(n) access

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Q.222 Medium Capgemini Questions Capgemini

In Java, which keyword is used to prevent inheritance?

A private

B protected

C final

D static

Correct Answer: C. final

EXPLANATION

The 'final' keyword prevents a class from being subclassed or inherited

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Q.223 Easy Capgemini Questions Capgemini

What is the main purpose of a constructor in a class?

A To delete objects

B To initialize objects

C To perform calculations

D To print data

Correct Answer: B. To initialize objects

EXPLANATION

A constructor is used to initialize objects of a class with default or specified values

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Q.224 Easy Capgemini Questions Capgemini

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

A Queue

B Stack

C Array

D Linked List

Correct Answer: B. Stack

EXPLANATION

Stack follows LIFO principle where the last element added is the first to be removed

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Q.225 Easy Capgemini Questions Capgemini

What will be the output of: print(5 // 2) in Python?

A 2

B 2.5

C 3

D Error

Correct Answer: A. 2

EXPLANATION

The // operator is floor division. 5 // 2 = 2 (integer division, rounded down)

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Q.226 Easy Capgemini Questions Capgemini

What is the correct SQL syntax to select all records from a table named 'Students'?

A SELECT * TABLE Students;

B SELECT * FROM Students;

C FETCH * FROM Students;

D GET * FROM Students;

Correct Answer: B. SELECT * FROM Students;

EXPLANATION

The correct SQL syntax is 'SELECT * FROM table_name;'

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Q.227 Easy Capgemini Questions Capgemini

In OOPS, what does 'inheritance' allow you to do?

A Create multiple objects

B Derive a new class from an existing class

C Combine two classes

D Delete a class

Correct Answer: B. Derive a new class from an existing class

EXPLANATION

Inheritance allows a new class to be derived from an existing class, inheriting its properties and methods

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Q.228 Easy Capgemini Questions Capgemini

Which of these is NOT a programming language?

A Java

B Python

C HTML

D JavaScript

Correct Answer: C. HTML

EXPLANATION

HTML is a markup language, not a programming language. Others are programming languages

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Q.229 Easy Capgemini Questions Capgemini

What does the acronym 'API' stand for?

A Application Programming Interface

B Advanced Protocol Integration

C Application Process Identifier

D Automated Programming Implementation

Correct Answer: A. Application Programming Interface

EXPLANATION

API stands for Application Programming Interface, a set of rules for software interaction

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Q.230 Medium Capgemini Questions Capgemini

Identify the error in: 'The team were playing good football yesterday.'

A were playing

B good football

C yesterday

D No error

Correct Answer: B. good football

EXPLANATION

'Good' should be 'well' when describing how something is done (adverb usage)

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