Checkpoint Systems Software Engineer Intern Trainee Interview Questions and Answers

Basic questions on maths related parts and analysis skills

Coding questions from various Data Structure parts like linkedList stack queue

Q1. DSA question on Array
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Q2. Calender based DSA question
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Q1. Basic oops concept
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OOP is a programming paradigm based on objects, encapsulating data and behavior for better code organization and reuse.
• Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).

• Inheritance: Mechanism to create a new class using properties and methods of an existing class (e.g., a 'Dog' class inheriting from an 'Animal' class).

• Polymorphism: Ability to present the same interface fo...read more
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Q1. NodeJS event loop
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Q2. What isClosure explain with example
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A closure is a function that has access to its own scope, as well as the outer function's scope.
• Closure allows a function to access variables from its outer function even after the outer function has finished executing.

• Example: function outerFunction() { let outerVar = 'I am outer'; return function innerFunction() { console.log(outerVar); }; }

• When innerFunction is called, it can still access outerVar even though outerF...read more
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Q1. Print the largest string from the given 5 strings
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Find the largest string from a given array of 5 strings
• Iterate through the array of strings and compare the length of each string

• Keep track of the largest string found so far

• Return the largest string at the end
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Q2. Check if the required dropdown option is displayed or not
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Use Selenium WebDriver to locate the dropdown element and check if the required option is displayed
• Locate the dropdown element using Selenium WebDriver

• Use the Select class to interact with the dropdown

• Verify if the required option is displayed using isSelected() method
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