Trunexa Embedded Software Engineer Interview Questions and Answers for Experienced

Q1. Asked regarding programs
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Q2. Asked regarding questions of memory structure
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Q3. What is Compilation process
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Compilation process is the process of converting source code into machine code by a compiler.
• Source code is written in a high-level programming language

• Compiler translates the source code into assembly code

• Assembler converts the assembly code into machine code

• Final executable file is generated
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Online c programming test using online tool

Q1. Manager level round - explain about project and area of difficulty in embedded. Which one we work and fix issue
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Q1. Discuss about offer letter
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Very basic c questions like an array

Q1. What are storage classes
Ans. 
Storage classes in C define the scope and lifetime of variables.
• Storage classes include auto, register, static, extern, and typedef.

• Auto variables are local to the block they are declared in.

• Register variables are stored in CPU registers for faster access.

• Static variables retain their value between function calls.

• Extern variables are declared in one file and can be used in another file.

• Typedef is used to create new dat
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Q2. What is use of device drivers
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Device drivers are software programs that allow the operating system to communicate with hardware devices.
• Device drivers act as a translator between the hardware device and the operating system.

• They provide a standardized interface for the operating system to interact with different types of hardware devices.

• Device drivers help improve system stability and performance by enabling efficient communication between hardwar...read more
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Q3. How do you copy files from and device to other
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You can copy files from one device to another by using file transfer protocols like FTP, SCP, or by physically transferring the files via USB or external storage devices.
• Use FTP (File Transfer Protocol) to transfer files over a network

• Use SCP (Secure Copy Protocol) for secure file transfers

• Physically transfer files by connecting devices via USB or using external storage devices like USB drives or SD cards
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Q4. Bit mask operation
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Q5. Swapping without 3 rd variable
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Swapping two variables without using a third variable
• Use XOR operation: a = a ^ b; b = a ^ b; a = a ^ b;

• Use addition and subtraction: a = a + b; b = a - b; a = a - b;

• Use multiplication and division: a = a * b; b = a / b; a = a / b;
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Q1. Advanced data structures like double linked list
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Q1. Describe your project
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Q2. Code snippets of c programming
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Code snippets of c programming
• Use #include to include header files

• Use int main() to start the program

• Use printf() to print output

• Use scanf() to take input

• Use if-else statements for conditional execution

• Use loops like for, while, do-while for repetitive tasks

• Use arrays to store multiple values of same data type

• Use pointers to manipulate memory addresses

• Use structures to group related data

• Use functions to modularize code
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Q3. What is isr routine in c programming
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ISR routine is a function that is executed in response to an interrupt signal.
• ISR stands for Interrupt Service Routine

• It is used to handle hardware interrupts

• ISR routines are written in C language

• They are executed when an interrupt signal is received

• ISR routines should be short and efficient

• They should not block other interrupts

• Examples of ISR routines include handling keyboard input or timer interrupts
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Q1. Why do you want to work for Wipro
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