VVDN Technologies Interview Questions, Process, and Tips

Aptitude, electronics

Q1. Transformer and power supply
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Q2. What is a pointer
Ans. 
A pointer is a variable that stores the memory address of another variable.
• Pointers are used to access and manipulate memory locations directly.

• They are commonly used in programming languages like C and C++.

• Example: int *ptr; // declares a pointer to an integer variable
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Q1. What all thinks happen on powering on a device.
Ans. 
When a device is powered on, several processes occur including booting up the operating system, initializing hardware components, loading necessary drivers, and launching user interface.
• Booting up the operating system

• Initializing hardware components

• Loading necessary drivers

• Launching user interface
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Q1. Salary Discussed
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Q2. Verified Degree
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IOT Product based Testing

Q1. Whats types of Testing
Ans. 
Types of testing include unit testing, integration testing, system testing, acceptance testing, and regression testing.
• Unit testing: Testing individual components or modules of a software.

• Integration testing: Testing how different modules work together.

• System testing: Testing the entire system as a whole.

• Acceptance testing: Testing to ensure the system meets the requirements of the stakeholders.

• Regression testing: Test...read more
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Q2. IP & IT Based
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Q3. Troubleshooting & Configuration
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Whats about self knowledge

Q1. What are Middleware and filters
Ans. 
Middleware and filters are components in ASP.NET Core that allow you to handle requests and responses in the pipeline.
• Middleware are components that are added to the request pipeline to handle requests and responses.

• Filters are used to implement cross-cutting concerns like logging, exception handling, and authorization.

• Middleware can be used to modify the request or response before it reaches the controller action.

• Filt...read more
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Q2. Authentication and authorisation
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Q3. Oops concepts and questions around overloading overriding method hiding
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Q1. General hr behavioural question and situational questions
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Q1. Majorly focused around oops and work practices
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Q1. Unit testing strategies and basic behavioural questions
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Q1. About for ele. Part
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Q2. Sap information
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Q1. Sap software work
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Q2. Material according
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Normal aptitude question

Q1. Which language you like?
Ans. 
I prefer C++ for its performance and versatility.
• C++ is known for its high performance and efficiency.

• C++ is a versatile language that can be used for a wide range of applications.

• C++ allows for low-level memory manipulation, making it suitable for embedded systems.

• Examples: Developing firmware for microcontrollers, implementing real-time systems.
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Q2. Why c is faster than java or python
Ans. 
C is faster than Java or Python due to its lower-level nature and direct hardware access.
• C is a low-level language that allows for direct memory manipulation and hardware access, resulting in faster performance.

• Java and Python are higher-level languages with more abstractions, leading to slower execution compared to C.

• C code is compiled directly to machine code, while Java and Python code are typically interpreted or r...read more
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Q3. Reverse string ?
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