Mechlin Software Technology QA Associate Interview Questions and Answers

Q1. Java program to split alpha-numeric values without using the split method
Ans. 
Split alpha-numeric values in Java without using split method
• Iterate through each character in the input string

• Check if the character is a digit or a letter using Character.isDigit() and Character.isLetter() methods

• Create separate strings for digits and letters and store them in an array
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Q2. SQL query to add a new column to a table and the column value should have a default value and never be null
Ans. 
Use ALTER TABLE statement to add a new column with a default value and set it to NOT NULL
• Use ALTER TABLE table_name ADD column_name data_type DEFAULT default_value NOT NULL;

• Example: ALTER TABLE employees ADD hire_date DATE DEFAULT '2022-01-01' NOT NULL;
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Q1. Selenium vs cypress
Ans. 
Selenium is a widely used open-source tool for web automation testing, while Cypress is a newer tool known for its fast and reliable testing capabilities.
• Selenium is more established and has a larger community support

• Cypress is known for its fast test execution times

• Cypress has built-in support for modern web technologies like React and Angular

• Selenium supports multiple programming languages like Java, Python, and C#

• Cy...read more
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Q2. How do you install cypress
Ans. 
Cypress can be installed using npm package manager.
• Install Node.js if not already installed

• Open terminal and run 'npm install cypress'

• Once installation is complete, run 'npx cypress open' to open Cypress Test Runner
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Q3. Reverse a string in Javascript
Ans. 
Reverse a string in Javascript
• Use the split() method to convert the string into an array of characters

• Use the reverse() method to reverse the order of the characters

• Use the join() method to convert the array back into a string
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Q1. Java basics Arrays and string
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Q2. Selenium in depth scenarios
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Write code for questions like array manipulation

Q1. Salary basics negotiate
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Q1. SDLC and STLC Cucumber
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Complex aptitude Test

Q1. Test estimation techniques
Ans. 
Test estimation techniques involve various methods to predict the time and resources needed for testing activities.
• Use historical data from previous projects to estimate testing effort

• Break down the project into smaller tasks and estimate each task individually

• Use expert judgment from experienced QA engineers to provide input on estimation

• Consider complexity, risks, and dependencies when estimating testing effort
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Q2. Equals to vs ==
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Q1. Explain your framework
Ans. 
My framework is a data-driven automation framework using Selenium and TestNG.
• Utilizes Selenium for web automation

• Uses TestNG for test case management and execution

• Data-driven approach for test data separation

• Supports parallel execution for faster testing

• Includes reporting tools like ExtentReports for detailed test results
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Q2. Explain oops concept
Ans. 
OOPs concept is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
• OOPs stands for Object-Oriented Programming

• Key concepts include classes, objects, inheritance, polymorphism, and encapsulation

• Classes are blueprints for objects, defining their properties and behaviors

• Objects are instances of classes, representing real-world entities

• Inh...read more
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Q1. Questions on switching
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Q2. Packet flow in routers, osi model , etc
Ans. 
Packet flow in routers involves data transmission through different layers of the OSI model.
• Packet flow starts at the network layer where packets are routed based on IP addresses.

• Packets then move to the data link layer where MAC addresses are used for communication.

• Finally, packets are transmitted physically through the network interface.

• OSI model consists of 7 layers: Physical, Data Link, Network, Transport, Session,
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Q1. Java Programs on Strings
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Q2. Collections and oops
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