PTC QA Engineer Interview Questions, Process, and Tips

Q1. Abstract class vs interface
Ans. 
Abstract class is a class that can have both abstract and non-abstract methods, while an interface is a blueprint for a class that only contains abstract methods.
• Abstract class can have constructor while interface cannot.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract class can have access modifiers for its members, while interface cannot.

• Interfaces are used to achieve mu...read more
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Q2. String programs
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Q1. Basic situation handelling questions
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Q1. Postman details, what are variable ?
Ans. 
Variables in Postman are placeholders that can be used to store and reuse values in requests and scripts.
• Variables in Postman are denoted by enclosing them in double curly braces like {{variable_name}}

• Variables can be defined at different scopes such as global, environment, and local

• Variables can be used to store values like API keys, tokens, and dynamic data

• Variables can be dynamically updated using scripts or pre-req
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Q1. SQL in depth Different types of join
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Different types of SQL joins include inner join, left join, right join, and full outer join.
• Inner join: Returns rows when there is a match in both tables

• Left join: Returns all rows from the left table and the matched rows from the right table

• Right join: Returns all rows from the right table and the matched rows from the left table

• Full outer join: Returns rows when there is a match in either table
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