LN Technologies Embedded Software Developer 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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Q1. Basic question from my Resume and Work/Projects
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Q2. Technical Question : Stackoverflow, Queue, Virtual Class/Keyword, Pointers, Linked List
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Q3. Memory Stack, Local/Glabal/Staic Variable stored where?
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Q4. Direct Memory Access, Heap, Stack, Dyanamic Memory Allocation, memory Segmentation fault
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Q5. Difference between Timer and counters?
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Timers are used to measure time intervals, while counters are used to count events or occurrences.
• Timers are typically used for generating delays, measuring time intervals, or triggering events at specific times.

• Counters are used to count external events, such as pulses or interrupts.

• Timers can be used to implement software delays, while counters can be used for tasks like frequency measurement.

• Examples: A timer can be...read more
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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

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. Advanced data structures like double linked list
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