Infosys Consulting Quality Analyst Interview Questions and Answers

Q1. Explain the Smoke Testing .
Ans. 
Smoke testing is a preliminary test to check if the basic functionalities of a software application are working fine.
• Smoke testing is a subset of regression testing and is usually performed after a build is received.

• It is a quick and shallow test to ensure that the critical functionalities of the software are working.

• The main purpose of smoke testing is to determine if the build is stable enough for further testing.

• If ...read more
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Q2. What is a bug?
Ans. 
A bug is an error, flaw, mistake, failure, or fault in a computer program or system that causes it to produce incorrect or unexpected results.
• A bug can manifest as a software glitch, crash, or malfunction.

• Bugs can be caused by coding errors, design flaws, or unexpected interactions between different parts of a system.

• Examples of bugs include software freezing, incorrect calculations, and data loss.

• Identifying and fixin...read more
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Easy to medium learn from india bix app

Q1. Basic programming questions
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Q1. What are your salary expectations?
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Q2. Share details of your previous job.
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Q3. Why are you looking for a change?
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Q4. Tell me about yourself.
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Q1. Kpi/QA tools/rca/tni
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Q1. All questions are about things mentioned in resume
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Q2. Questions and roles, responsibilities and tools used
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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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Q1. Select 3 rd highest salary from employee table
Ans. 
To select the 3rd highest salary from the employee table, you can use a SQL query with the 'LIMIT' and 'OFFSET' keywords.
• Use a SQL query like 'SELECT salary FROM employee ORDER BY salary DESC LIMIT 1 OFFSET 2' to get the 3rd highest salary.

• The 'ORDER BY' clause sorts the salaries in descending order, 'LIMIT 1' limits the result to 1 row, and 'OFFSET 2' skips the first two rows.

• Make sure to adjust the 'OFFSET' value if
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Q2. Difference between put and patch
Ans. 
Put is used to create or replace a resource, while patch is used to update a resource partially.
• Put is idempotent, meaning multiple identical requests will have the same effect as a single request

• Patch is not idempotent, as multiple identical requests may have different effects

• Put requires the client to send the entire updated resource, while patch only requires the specific changes to be sent
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Q3. Difference between == and equals in string
Ans. 
The == operator checks for reference equality, while the equals method checks for value equality in strings.
• Use == to check if two string variables refer to the same object in memory.

• Use equals() method to check if two string variables have the same sequence of characters.

• Example: String str1 = "hello"; String str2 = "hello"; str1 == str2 will return false, but str1.equals(str2) will return true.
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Q4. Difference way of declaring String
Ans. 
String can be declared using double quotes, single quotes, or the String constructor.
• Declare using double quotes: String str1 = "Hello";

• Declare using single quotes: String str2 = 'World';

• Declare using String constructor: String str3 = new String("Java");
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Q5. Difference between String builder and String buffer
Ans. 
String builder is not synchronized, while String buffer is synchronized.
• String builder is faster than String buffer because it is not synchronized.

• String buffer is thread-safe, while String builder is not.

• String builder is preferred for single-threaded applications, while String buffer is preferred for multi-threaded applications.
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Q6. Convert array into arraylist

Ans. 

Convert array to ArrayList of strings

• Create a new ArrayList

• Use Arrays.asList() method to convert array to ArrayList

• Example: String[] array = {"apple", "banana", "orange"}; ArrayList list = new ArrayList<>(Arrays.asList(array));

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