Caterpillar Inc Automation Engineer Interview Questions and Answers

Q1. Basics of OOP and JavaScript related
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MCQ of programming languages - c/c++/Python , basic DS and OS questions

Q1. DS and programming language questions
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Q1. Project level discussion and questions
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Q1. Normalization in SQL, What is Cursor in SQL
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Normalization in SQL is the process of organizing data in a database to reduce redundancy and improve data integrity. A cursor in SQL is a database object used to retrieve and manipulate data row by row.
• Normalization in SQL involves breaking down a large table into smaller tables and defining relationships between them to reduce redundancy.

• Cursors in SQL are used to fetch and process individual rows returned by a query...read more
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Q2. .Net Core and API based questions
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Q3. Abstract and interface difference
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Abstract classes can have both abstract and non-abstract methods, while interfaces can only have abstract methods.
• Abstract classes can have constructors, fields, and non-abstract methods along with abstract methods

• Interfaces can only have abstract methods and constants

• A class can implement multiple interfaces but can only inherit from one abstract class
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Q4. Const and read only difference in C#
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Const keyword is used to declare constants at compile time, while read-only keyword is used to create immutable fields that can only be assigned a value at runtime.
• Const values are determined at compile time and cannot be changed, while read-only values can only be assigned a value once at runtime.

• Const fields are implicitly static, while read-only fields are not.

• Example: const int x = 5; read-only int y = 10;
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Q5. Azure basic fundamental questions
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Q6. Sample query to join tables using SQL
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Sample query to join tables using SQL
• Use the JOIN keyword to combine rows from two or more tables based on a related column between them

• Specify the columns to be selected from each table

• Use the ON keyword to specify the join condition
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Q1. Basic and advanced concepts
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Q1. What is p&ID and why is it used?
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P&ID stands for Piping and Instrumentation Diagram, used in engineering to show the piping of a process flow together with the installed equipment and instrumentation.
• P&ID is a detailed diagram that shows the piping of a process flow, along with the equipment and instrumentation used in the process.

• It is used in engineering to understand the design, construction, and operation of a process plant or industrial facility.

• ...read more
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Q1. Observables vs promises Lifecycle hooks Pipes
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Observables are used for handling asynchronous operations in a stream-like manner, promises are for handling a single async operation, and lifecycle hooks are methods that allow you to tap into the lifecycle of a component in Angular.
• Observables are used in Angular for handling asynchronous operations in a stream-like manner, allowing you to work with data over time.

• Promises are used for handling a single asynchronous ...read more
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Q1. Lazy loading Dependency injection
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Aptitude+ coding questions ,easy to moderate level questions

Q1. Situation based questions by recording answers upto 3 min
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Q1. Basics of Java and c questions Difference between finalze and final Instances of abstract class
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