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Online Embedded C Programming Test

Topics Covered

  • DMA Architecture
  • DMA Data Transfer
  • Big-Little Endian Interprocess Communication System

Useful for hiring

  • Embedded C Developer
  • Embedded C Programmer
  • Software Developer - Embedded C

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Given are two pieces of codes used to multiply two numbers stored in a register.You need to adopt a coding strategy which will fulfill your goal of maximizing the general purpose registers in your microcontroller so as to accommodate a large amount of data that should be stored. Choose the appropriate code snippet and mark the appropriate option.

C1. MUL 3:3, 3:4

C2. LOAD A, 3:3
      LOAD B, 3:4
   PROD A, B
        STORE 3:3, A

    • C1 is the most appropriate code as the code size is very small and will require much less processing by the RAM

    • C2 is appropriate as the Instruction set used in C2 are very generic in nature and can be used for multiple purposes and don't require too much storage

    • Both C1 and C2 can be used because they take the same time to execute

    • Data is insufficient


You are given the following data regarding the DMA Data Transfer process. From the given data, find out what percentage of the bus clocks are used by the DMA device if the data rate is 5714 Kbits/sec. (Try giving approximately close answers)

1. Number of clock cycles for each data transfer = 4
2. Number of clock cycles to acquire and release data buses = 3
3. Number of bits per data item = 8
4. Clock Frequency = 100 MHz

    • 5%

    • 10%

    • 2%

    • 1%


A processor uses a DMA Architecture in which the DMA uses the same internal address and the data buses as the Core. However, the Internal Memory is partitioned. Which of the following statements regarding the processor with such a DMA architecture is correct?

    • The PCU and the DMA cannot move data at the same clock cycle

    • If one the DMA or the PCU are accessing internal memory, the other one can access external memory in the same core clock cycle

    • The PCU and the DMA can simultaneously access different partitions of the Internal Memory

    • None of the mentioned

Test details:

This online embedded C programming test that enables employers to identify potential embedded C developers/programmers by evaluating working skills and job readiness. For this reason, the emphasis is on evaluating the knowledge of applied skills gained through real work experience, rather than theoretical knowledge.

The test may contain MCQ's (Multiple Choice Questions), MAQ's (Multiple Answer Questions), Fill in the Blank, Descriptive, Whiteboard Questions, Audio / Video Questions, True or False.

Test Details: 20 minutes

10 Application Questions

The combination of Application questions helps to evaluate Technical as well as practical Skills of Candidates.

Test description:

Embedded C Online Test helps Recruiters & Hiring Managers to effectively assess the skills of the candidate about embedded C programming before an interview. Embedded C is a set of language extensions to the C programming language by the C Standards Committee to address commonality issues that exist between C extensions for different embedded systems. Embedded C is the most widely used programming language for embedded Processors and/or Controllers. This online embedded C test is designed to check the development and programming skills of Embedded C Developer - As per Industry Standards.

Embedded C Test contains questions on following Topics:

  • DMA Architecture

  • DMA Data Transfer

  • Big-Little Endian

  • Interprocess Communication System 

This embedded C online test is designed & validated by our experienced subject matter experts (SME)s. Employers can ask the candidate to apply for this embedded C test online from any part of the world, provided there is an internet connection. Using powerful reporting, you can have a detailed analysis of the test results to help you make a better hiring decision and predict the candidate’s performance.

The Embedded C Quiz contains MCQ's (Multiple Choice Questions), MAQ's (Multiple Answer Questions), Fill in the Blank, Descriptive, True or False.

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