Go-Jek Softwaretest Engineer Interview Questions and Answers

Q1. What is the difference between normal and arrow functions
Ans. 
Arrow functions are more concise and have a lexical 'this' binding compared to normal functions.
• Arrow functions do not have their own 'this' keyword, they inherit it from the parent scope.

• Arrow functions do not have their own 'arguments' object.

• Arrow functions cannot be used as constructors with 'new'.

• Arrow functions are more concise and have implicit return when no curly braces are used.
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Q2. All basic JS Questions to cover Hoisting closure
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Q3. They asked to show me an example using the API call
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Q4. Difference between forEach and Map
Ans. 
forEach is used to iterate over an array and perform a function on each element, while map creates a new array by applying a function to each element.
• forEach does not return a new array, while map does

• forEach does not modify the original array, while map creates a new array

• forEach is used for side effects, while map is used for transformation

• Example: forEach - array.forEach(item => console.log(item)), map - const newAr
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Q1. What is dependency injection
Ans. 
Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.
• Dependency injection helps in achieving loose coupling between classes.

• It allows for easier testing by providing mock dependencies.

• There are three types of dependency injection: constructor injection, setter injection, and interface injection.
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Q2. What is state in react
Ans. 
State in React is a JavaScript object that stores data and determines how a component renders and behaves.
• State is mutable and can be updated using the setState() method

• State should be used for data that will change over time and affect the component's rendering

• State should not be modified directly, use setState() instead
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Basic array and vectors DSA questions

Q1. Asked me about my past project and my contribution in it
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Q2. Linux commands and c++ language control
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Q3. Asked me to write last function i wrote and explain what it does
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Q1. Asked me about my past projects and my contribution
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Q2. Checked my work ethics
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Q1. Basic hr questions
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Q2. Salary negotiation
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Q1. What is HTML and CSS?
Ans. 
HTML and CSS are markup languages used for creating and styling web pages.
• HTML stands for HyperText Markup Language and is used for structuring content on web pages.

• CSS stands for Cascading Style Sheets and is used for styling the appearance of web pages.

• HTML uses tags to define elements like headings, paragraphs, images, and links.

• CSS allows for customization of colors, fonts, layout, and other visual aspects of a web...read more
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Q2. Operating Systems, DBMS, Python
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Q1. On demand video assessment that include questions to answer.
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Q2. Games designed to test different ability.
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Q1. Best practices of coding
Ans. 
Best practices of coding include writing clean and readable code, using meaningful variable names, following coding standards, and testing code thoroughly.
• Write clean and readable code

• Use meaningful variable names

• Follow coding standards

• Test code thoroughly
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Q1. String related questions
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Q1. Tuple related questions
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The test carried 7 sections of aptitude with no negative markings and the questions were also easy with time duration of 1 hours which was to be used for the coding round also

Basic understanding was checked, if basics are clear of DSA and computer science fundamentals then very easy to crack

It continues for 15 mins