Walnut Healthcare Embedded Engineer Interview Questions and Answers

Q1. Advanced embedded
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Array, linked list ,oops

Structure, union and project work

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

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

• Example: int *ptr; // declares a pointer to an integer variable
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Q2. What is stack ?
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Stack is a data structure that follows Last In First Out (LIFO) principle, used for storing temporary data in a program.
• Stack is a linear data structure with two main operations: push (adds data) and pop (removes data).

• Example: function call stack in programming languages like C, where function calls are added and removed in a LIFO manner.

• Stack memory is used for local variables and function call management.

• Stack overf...read more
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Basic c datastructucture networking l2 l3 questions

Q1. Question on projects.
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Q2. How packet goes from source to destination.
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Packets are sent from source to destination through a series of network devices using routing protocols.
• Packet is created at the source with source and destination IP addresses.

• Packet is sent to the default gateway or router.

• Router checks its routing table to determine the next hop for the packet.

• Packet is forwarded to the next hop until it reaches the destination.

• Destination receives the packet and sends an acknowledg
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Q3. Delete a node from single linked list.
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To delete a node from a single linked list, we need to find the node and update the pointers.
• Traverse the list to find the node to be deleted

• Update the previous node's pointer to point to the next node

• Free the memory of the node to be deleted
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Q4. Dynamic memory alocation in c
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Dynamic memory allocation in C allows allocation of memory at runtime.
• Dynamic memory allocation is done using functions like malloc(), calloc(), realloc() and free().

• malloc() allocates memory block of specified size and returns a pointer to the first byte of allocated memory.

• calloc() allocates memory block of specified size and initializes all bits to zero.

• realloc() changes the size of previously allocated memory block...read more
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Q5. Interprocess communication in OS
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Interprocess communication is a mechanism that allows processes to communicate with each other in an OS.
• IPC mechanisms include pipes, sockets, message queues, shared memory, and signals.

• IPC can be used for synchronization, data sharing, and coordination between processes.

• IPC can be implemented using system calls such as fork(), pipe(), socket(), and msgget().
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Q1. What about your self
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I am a dedicated and passionate embedded engineer with a strong background in programming and hardware design.
• Proficient in programming languages such as C, C++, and Python

• Experience in designing and implementing embedded systems

• Familiarity with microcontrollers and microprocessors

• Strong problem-solving and analytical skills

• Excellent communication and teamwork abilities
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Q2. What is your name
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My name is not available.
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Q3. Ok then what was the theme of the job
Ans. We empovering congnizent compy in any culture
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It was really good and the interview was proctored

It consists of five questions and they are also mid level questions

They took the first round for one hour. They asked related to the projects which i have worked on and questions related to project

Q1. What is the reason to leave previous company
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