Twilio Machine Learning Engineer Interview Questions and Answers

There will be 3 coding questions given to us for solving,we need solve two questions compulsory.

Q1. Introduce yourself
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring, and Angular

• Strong problem-solving skills
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Q2. Questions related to frontend
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Coding round and level was good, one araay question and two dp questions

Q1. Interview round was also good, questions asked from stack and queues, puzzle, dbms, sql, and dsa problem
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Q1. Domain related questions
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Q2. Configuration pf stack
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MCQ type questions answers

Q1. String and array related
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Q2. Scenario based question answers
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Maths, logical question & some related to programming

One problem statement to write a program.

Q1. Technical question related PHP, SQL, etc.
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Q1. Salary discussion
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Q1. What final class and method
Ans. 
The final class and method are used to prevent inheritance and method overriding respectively.
• Final class: A final class cannot be subclassed. It is often used for utility classes or classes that should not be extended.

• Final method: A final method cannot be overridden by subclasses. It is used to prevent modification of a method's behavior in subclasses.
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Q2. PHP reference variable
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Q3. Find duplicate numbers
Ans. 
Find duplicate numbers in an array of strings.
• Iterate through the array and keep track of the count of each number using a hash map.

• If the count of a number is greater than 1, it is a duplicate.

• Return the list of duplicate numbers.
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Q4. Echo variable in single quote what will be output
Ans. 
The output will be the literal string of the variable, without any variable interpolation.
• When a variable is echoed in single quotes, it is treated as a literal string.

• No variable interpolation or special characters are interpreted.

• The output will include the variable name itself, not its value.
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Q5. What is oops concept
Ans. 
Object-oriented programming (OOP) is a programming paradigm that uses objects to represent and manipulate data.
• OOP is based on the concept of classes and objects.

• It focuses on encapsulation, inheritance, and polymorphism.

• Encapsulation hides the internal details of an object and provides a public interface.

• Inheritance allows classes to inherit properties and methods from other classes.

• Polymorphism allows objects of diff...read more
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Q6. Having clause in MySQL
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The HAVING clause is used in MySQL to filter the results of a GROUP BY query based on a condition.
• The HAVING clause is similar to the WHERE clause, but it operates on grouped rows rather than individual rows.

• It is used in conjunction with the GROUP BY clause.

• The HAVING clause is used to filter the results of a GROUP BY query based on a condition that applies to the grouped rows.

• It is typically used to specify condition...read more
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