Ignitarium Technology Solutions Embedded Software Engineer Interview Questions and Answers

All basic programs on c and linux

Q1. Based on c microprocessor microcontroller and linux
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Q2. Based on networking
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Q3. Based communication protocols
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Q1. What is stack overflow
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Stack overflow occurs when a program uses more memory than the call stack can handle, leading to a crash.
• Occurs when a program's call stack runs out of memory

• Can lead to crashes or unexpected behavior

• Common in recursive functions with no base case

• Can be caused by infinite loops or excessive memory usage
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Q1. How to integrate and differentiate signals through software embedded c for 8 bit , 16 bit architecture
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Integrating and differentiating signals through software embedded C for 8-bit and 16-bit architecture involves utilizing appropriate data types and algorithms.
• Use fixed-point arithmetic for 8-bit architecture to maintain precision

• Leverage floating-point arithmetic for 16-bit architecture for higher precision

• Implement algorithms like finite difference method for differentiation

• Utilize digital signal processing technique...read more
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Q2. How to implement digital filter through software
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Digital filters can be implemented through software by using algorithms such as Finite Impulse Response (FIR) or Infinite Impulse Response (IIR).
• Choose the appropriate filter type based on the desired frequency response and computational complexity

• Implement the filter algorithm in the firmware code using programming languages like C or assembly

• Optimize the filter design for efficient memory usage and processing speed

• Te...read more
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Q1. Basic c concepts and programming
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Q2. Embedded firmware concepts
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Linked list, data structures

Q1. Why we should use auto keyword in local scope only
Ans. 
Using auto keyword in local scope only ensures type safety and avoids unintended side effects.
• Auto keyword deduces the type of the variable from its initializer expression.

• Using auto in local scope avoids unintended type conversions and promotes type safety.

• Auto keyword should not be used for function parameters or class members.

• Example: auto x = 10; // x is deduced as int

• Example: auto y = 3.14; // y is deduced as doub
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Q2. Why the default value of reg keyword is garbage value only
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The default value of reg keyword is garbage value due to performance optimization.
• Garbage value is faster to assign than initializing to a specific value.

• Initializing to a specific value would require additional instructions and memory access.

• The value of reg keyword is expected to be overwritten before use.

• Garbage value can help in detecting uninitialized variables during testing.

• Example: int x; // x will have a garba
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All basic programs on c and linux

Q1. Based on c microprocessor microcontroller and linux
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Q2. Based on networking
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Q3. Based communication protocols
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Q1. An interview about 40 mins and questions on coding and embeded systems.
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Q2. Asked on linked lists .
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Q3. About functioning pf micro contoller.
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