Embedded Systems Guide Interview Questions Save Abandoned

C

• What is difference between Structure and Union ?
• What is bit field in C ? What is the benefit of using it ?
• What is structure padding ? How to avoid it ?
• What is the size of void ?
• What is Data alignment ?

OS

• What is the difference between Thread and Process ?
• Differentiate between mutexes vs semaphores.

RTOS

• What is a real-time operating system ?
• How does one decide whether to use an (RTOS) for an embedded system?
• What are good resources to learn about RTOS for embedded systems, e.g. how to use it, how to integrate your application?
• What are some examples of Real Time Operating System?
• What is the difference between real time operating system and non real time operating system?

Networking

• What is the difference between TCP and UDP?
• Which protocol should be used in Video streaming ? TCP or UDP ?

Boot sequence

• Linux Boot Process

Memory management

• What is dynamic memory allocation and static memory allocation?
• What is the correct sequence of memory access while running a computer program?
• How and from where I could learn more about kernel memory management to implement the device drivers?
• Memory allocation

Core Embedded

• What is the difference between Von-neuman and Harvard Architecture ?
• What is the significance of volatile keyword in c ?
• What is an embedded system ?
• What is a Firmware ?
• What are device drivers?
• What is the boot-loader and startup code in embedded system?

Bus Protocols

• Difference between UART and RS-232?
• SPI versus I2C protocols
• What is the UART at the embedded system?
• What is I2C in simple terms? Where do we use this protocol? Why would most SOCs have I2C protocol?
• What is SPI protocol in Embedded Systems?
• What is CAN protocol?
• What is a USB, and how does it work?
• What are interrupts and how do they work?