Aptiv Softwaretest Engineer Interview Questions and Answers

Q1. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance allows a child class to override a method from its parent class, providing different func
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Q2. Why You choose java
Ans. 
I chose Java for its platform independence, strong community support, and extensive libraries.
• Platform independence allows Java code to run on any device with a JVM

• Strong community support ensures access to resources and help when needed

• Extensive libraries provide pre-built solutions for common programming tasks
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Logical, Patterns, Analytical

Q1. Technical + HR round
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Q2. Technical + HR round
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Q1. How would you preprocess the raw data
Ans. 
Preprocessing raw data involves cleaning, transforming, and organizing data to make it suitable for analysis.
• Remove any irrelevant or duplicate data

• Handle missing values by imputation or deletion

• Normalize or standardize numerical data

• Encode categorical variables using techniques like one-hot encoding

• Feature scaling for machine learning algorithms

• Perform text preprocessing like tokenization and stemming
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Q2. How would you specify a solution that has been already existing
Ans. 
Specify the existing solution by documenting its architecture, components, technologies used, and any modifications made.
• Document the architecture of the solution, including high-level components and their interactions

• List the technologies used in the solution, such as programming languages, frameworks, and databases

• Describe any modifications or customizations made to the existing solution

• Include any performance metric...read more
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Q1. What is virtual DOM in React?
Ans. 
Virtual DOM is a lightweight copy of the actual DOM in React, used for efficient updates.
• Virtual DOM is a concept where a lightweight copy of the actual DOM is created in memory.

• React uses the virtual DOM to efficiently update the actual DOM when there are changes in the application.

• When changes are made to the virtual DOM, React calculates the most efficient way to update the actual DOM, minimizing performance impact.
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Q2. Explain about Context API in react?
Ans. 
Context API is a feature in React that allows sharing data between components without having to pass props through every level of the component tree.
• Context API provides a way to pass data through the component tree without having to pass props down manually at every level.

• It is useful for sharing global data such as themes, user authentication, or language preferences.

• Context API consists of three main parts: Provider...read more
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Q1. What was your most difficult taks at work and how did you deal with it?
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Q1. What is difference between mallock ( C ) and "new" ( C++ )
Ans. 
malloc is a function in C used to allocate memory dynamically, while 'new' is an operator in C++ used for the same purpose.
• malloc is a function in C, while 'new' is an operator in C++.

• malloc returns a void pointer, while 'new' returns a pointer of the specified type.

• malloc does not call constructors, while 'new' calls constructors for the allocated memory.

• malloc requires manual memory deallocation with free(), while 'n...read more
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Q1. Explain embedded systems
Ans. 
Embedded systems are specialized computing systems designed to perform specific tasks within a larger system.
• Embedded systems are typically found in everyday devices such as smartphones, cars, and household appliances.

• They are designed to be efficient, reliable, and often operate in real-time.

• Embedded systems often have limited resources such as memory and processing power.

• Examples of embedded systems include microcont...read more
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Q2. What are deadlocks
Ans. 
Deadlocks are situations in which two or more processes are unable to proceed because each is waiting for the other to release a resource.
• Deadlocks occur in multitasking environments where processes compete for limited resources.

• Four conditions must hold for a deadlock to occur: mutual exclusion, hold and wait, no preemption, and circular wait.

• Example: Process A holds Resource 1 and waits for Resource 2, while Process ...read more
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Standard process in hackerrank

Q1. Standard interview with live coding
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Q2. Find the second largest element in an array
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Q1. Describe yourself in 3 words
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