Mastek Senior QA Engineer Interview Questions and Answers

Deadlock is a situation where two or more processes are unable to proceed because each is waiting for the other to release a resource.

• Deadlock occurs when two or more processes are stuck in a circular wait, where each process is waiting for a resource held by another process.

• Four necessary conditions for deadlock are mutual exclusion, hold and wait, no preemption, and circular wait.

• Example: Process A holds resource X a...read more

I have experience with various technologies including Java, Python, HTML/CSS, JavaScript, and SQL.

• Java

• Python

• HTML/CSS

• JavaScript

• SQL

I am looking for a change to explore new opportunities and challenges. My notice period is 30 days.

• Seeking new opportunities and challenges

• Want to learn and grow in a different environment

• Exploring better career prospects

• Seeking a company with a better work-life balance

• Notice period is 30 days

Joins are used in SQL to combine data from two or more tables based on a related column.

• Types of joins include inner join, left join, right join, and full outer join.

• Inner join returns only the matching rows from both tables.

• Left join returns all rows from the left table and matching rows from the right table.

• Right join returns all rows from the right table and matching rows from the left table.

• Full outer join returns ...read more

Concatenate two linked lists alternatively

• Create a new linked list

• Traverse both linked lists simultaneously

• Alternate between adding nodes from each list to the new list

• If one list is longer than the other, add the remaining nodes to the end of the new list

No, this keyword cannot be used inside a static method.

• The 'this' keyword refers to the current instance of the class, but static methods do not have an instance.

• Static methods can only access static variables and methods.

• To access non-static variables or methods, an object of the class must be created first.

CTE stands for Common Table Expression, a temporary named result set that can be referenced within a SELECT, INSERT, UPDATE, or DELETE statement.

• CTE is defined using the WITH keyword.

• It can be used to simplify complex queries.

• It can also improve query performance.

• CTE can be recursive, allowing a query to reference itself.

• Example: WITH sales AS (SELECT * FROM sales_data) SELECT * FROM sales WHERE amount > 1000;

Partialviews are reusable views in MVC that can be embedded in other views.

• Partialviews help in reducing code duplication and improving maintainability.

• They can be used to display common UI elements like headers, footers, etc.

• Partialviews can also be used to render complex UI components like forms, tables, etc.

• They can be passed data from the parent view using a model or ViewData.

• Partialviews are rendered using the Htm

TempData is a dictionary object used to store data temporarily between controller actions.

• TempData is used to pass data between controller actions.

• It is used to store data temporarily until the next request is made.

• TempData is useful when redirecting to another action and you need to pass data along.

• It can be used to display success or error messages to the user.