Amazon Development Centre India Senior QA Engineer Interview Questions and Answers

Simple Java questions on string and arrays

Framework level knowledge is checked

Q1. Salary negotiation
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Q1. String manipulation questions without using default methods like string buffer
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Q2. Selenium programs and Xpaths for dynamic tables
Ans. 
Selenium can be used to automate testing of dynamic tables by using Xpaths to locate elements.
• Identify unique attributes of table elements to create stable Xpaths

• Use functions like contains(), starts-with(), or ends-with() in Xpaths for dynamic content

• Consider using parent-child relationships in Xpaths for nested tables
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Q1. Handle objects in webtable
Ans. 
To handle objects in a webtable, you can use methods like findElement, getText, getAttribute, etc.
• Use findElement method to locate the object in the webtable

• Use getText method to retrieve the text of the object

• Use getAttribute method to get specific attribute value of the object

• Iterate through rows and columns to handle multiple objects in the webtable
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Q2. Multiple window handles
Ans. 
Multiple window handles allow a QA engineer to interact with multiple browser windows during testing.
• Window handles are unique identifiers assigned to each browser window opened by the application.

• QA engineers can switch between window handles to perform actions on different windows.

• Example: driver.getWindowHandles() in Selenium returns a set of window handles.

• Example: driver.switchTo().window(handle) is used to switch
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Basic selenium automation coding question and QA related MCQs

Q1. Core java and selenium and Qs related to Leading the QA team
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Q2. Count duplicates in a string
Ans. 
Count duplicates in a string
• Iterate through the string and store each character in a hashmap with its count

• Return the count of characters with count greater than 1
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Q3. Write a Program to Sort Array
Ans. 
Program to sort array of strings
• Use a sorting algorithm like bubble sort, selection sort, or merge sort

• Compare strings using strcmp() function in C or compareTo() method in Java

• Handle edge cases like empty array or array with only one element
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Q4. Selenium Commands
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Q1. Salary Negotiation
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Q1. About Project , daily routines , SQL, unix
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Q2. On core java programs on arrays, strings etc
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Q1. Hashmap implementation
Ans. 
Hashmap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
• Hashmap is implemented using an array of linked lists or buckets to handle collisions.

• Each key is hashed to determine its index in the array.

• Common operations include put(key, value), get(key), and remove(key).

• Example: HashMap map = new HashMap<>(); map.put("apple", 5); int value = map.get("app
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Q2. Difference between getWindowHandles and getWindowHandle
Ans. 
getWindowHandles returns all open window handles, getWindowHandle returns handle of current window
• getWindowHandles returns a set of all window handles currently open in the browser

• getWindowHandle returns the handle of the current window being focused on

• Example: driver.getWindowHandles() vs driver.getWindowHandle()
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Q1. Method overload, Method Over ride, Inheritance, POM model explanation, Run only failed test cases in TESTNG how to achieve this, How to determine the tool for project, Write the X-path for random web e...read more
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Q1. What will you do to reduce the log size stored in AWS
Ans. 
Implement log rotation, set up log expiration policies, compress logs, use log aggregation services.
• Implement log rotation to limit the size of individual log files.

• Set up log expiration policies to automatically delete old logs.

• Compress logs before storing them in AWS to reduce storage space.

• Use log aggregation services like AWS CloudWatch Logs to centralize and manage logs efficiently.
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