PTC QA QC Engineer Interview Questions and Answers

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

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

Yes, I am ready to work in a hybrid model.

• I have experience working in both remote and on-site environments.

• I am comfortable using collaboration tools like Slack, Zoom, and Jira.

• I am adaptable and can easily switch between working from home and in the office.

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

Chiller and VRF systems differ in their cooling capacity, efficiency, and cost.

• Chillers are better suited for large commercial buildings with high cooling loads.

• VRF systems are more efficient and cost-effective for smaller buildings or individual rooms.

• Chillers use water as a cooling medium, while VRF systems use refrigerant.

• Chillers require more maintenance and have a longer lifespan than VRF systems.

• VRF systems offer...read more