Wissen Technology QA QC Engineer Interview Questions and Answers

3 coding question and some sptutude

Q1. 4 pillars of oops
Ans. 
Encapsulation, Inheritance, Polymorphism, Abstraction are the 4 pillars of OOPs
• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Class in Java

• Inheritance: Ability of a class to inherit properties and behavior from another class. Example: Subclass extending a superclass

• Polymorphism: Ability to present the same interface for different data types. Example: Method overloading in...read more
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Q2. Dsa questions and complexity
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Quantitative logical
SQL

Java coding string array SQL relational DBMS

Q1. Give Introduction
Ans. 
I am a Quality Engineer with a background in ensuring products meet standards and specifications.
• Experienced in quality control processes

• Skilled in root cause analysis

• Knowledgeable in statistical analysis

• Proficient in quality management systems

• Strong communication and problem-solving skills
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Q2. Oops,SQL queries pn joins
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Q1. Family questions
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Q1. This site mahendra prasad , I am from bihar, I have completed b. Tech from bihar engineering university patna
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Q2. No any questions
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Q1. Excution related question
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Q1. Tell me about yourself What is Regression testing
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Q1. Previous experience
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Q1. SQL query second max salary
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Q2. Sorting like insertion and bubble and also asks puzzle
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Q1. SQL query for distinct entry in a row ??
Ans. 
Use SELECT DISTINCT to retrieve unique entries in a row.
• Use SELECT DISTINCT column_name FROM table_name;

• Can be used with multiple columns to retrieve unique combinations.

• Helpful for eliminating duplicate entries in query results.
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Q2. Sparse matrix question
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