Infosys Senior QA Analyst Interview Questions and Answers

Q1. Basic of java and problems
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Q2. Questions on selenium and framework
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Q3. Coding questions
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Q1. General questions
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Q1. Types of waits in selenium
Ans. 
Types of waits in Selenium include implicit, explicit, and fluent waits.
• Implicit wait: Waits for a certain amount of time before throwing a NoSuchElementException.

• Explicit wait: Waits for a certain condition to occur before proceeding further in the code.

• Fluent wait: Waits for a condition to be true with a defined polling frequency.

• Example: driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
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Q2. Fibonacci program in java
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Fibonacci program in Java generates the Fibonacci sequence up to a specified number.
• Use a loop to generate the Fibonacci sequence

• Start with 0 and 1 as the first two numbers in the sequence

• Each subsequent number is the sum of the two preceding numbers

• Example: 0, 1, 1, 2, 3, 5, 8, 13, ...
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Q1. Difference between smoke and regression testing
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Smoke testing is a quick and shallow test to check basic functionality, while regression testing is a comprehensive test to ensure existing functionality is not affected by changes.
• Smoke testing is performed to verify if the critical functionalities of an application are working as expected after a build or release.

• Regression testing is performed to ensure that changes or fixes in the software do not introduce new bugs...read more
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Q1. Protocols in API
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API protocols are rules and standards used for communication between different software applications.
• API protocols define how data is exchanged between systems

• Common API protocols include REST, SOAP, and GraphQL

• Protocols ensure consistency and reliability in API communication
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Q1. Difference between rank and dense_rank
Ans. 
Rank assigns unique numbers to each row based on order. Dense_rank assigns consecutive numbers to each row based on order.
• Rank assigns a unique number to each row based on the order of the column specified in the ORDER BY clause.

• Dense_rank assigns consecutive numbers to each row based on the order of the column specified in the ORDER BY clause.

• Rank leaves gaps in the numbering sequence if there are ties in the column v...read more
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Q2. Difference between union and union all
Ans. 
Union combines and removes duplicates, Union All combines all rows including duplicates.
• Union is used to combine the results of two or more SELECT statements into a single result set.

• Union removes duplicates from the result set.

• Union All combines all rows from the SELECT statements, including duplicates.

• Union is slower than Union All as it has to remove duplicates.

• Example: SELECT column1 FROM table1 UNION SELECT column...read more
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Q1. What are your salary expectations?
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Q2. Tell me about yourself.
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Q3. Preferred Job location
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Q1. Questions related to selenium and framework
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Q1. Salary discussion happened with Sr Manager
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