Senior Firmware Engineer

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Senior Firmware Engineer Interview Questions and Answers

Updated 10 Mar 2024

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Q1. How would you bring up a device which requires a mobile host to onboard?

Ans.

To bring up a device requiring a mobile host for onboarding, establish communication between the device and mobile host.

  • Establish communication between the device and mobile host using Bluetooth, Wi-Fi, or other wireless protocols.

  • Develop firmware on the device to enable it to detect and connect to the mobile host.

  • Implement a user-friendly interface on the mobile host for device onboarding process.

  • Ensure secure communication between the device and mobile host to protect sensi...read more

Q2. introduce the master thesis topic

Ans.

Design and implementation of a real-time embedded system for monitoring and controlling a solar-powered irrigation system

  • Developed a low-power wireless sensor network for data acquisition

  • Implemented a control algorithm for efficient water usage

  • Designed a user interface for remote monitoring and control

  • Evaluated the system's performance in a real-world setting

Q3. Rotate a single Linked list

Ans.

Rotate a single linked list

  • Create a new pointer to the last node of the linked list

  • Make the next of the last node point to the head of the linked list

  • Make the head of the linked list point to the second node

  • Update the new last node to point to null

Q4. Explain LRU cache.

Ans.

LRU cache is a data structure that stores the most recently used items, discarding the least recently used items when the cache is full.

  • LRU stands for Least Recently Used.

  • It operates on the principle of discarding the least recently used items first when the cache reaches its capacity.

  • It typically involves a combination of a doubly linked list and a hash map for efficient operations.

  • Example: If the cache has a capacity of 3 and items A, B, C are accessed in that order, then a...read more

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