Embedded Systems and C Online Test

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The Embedded Systems and C test assesses candidates' knowledge of embedded systems and the C programming language.

It's an ideal test for pre-employment screening. A good embedded systems/software engineer needs to know how to design, develop, test, and maintain embedded systems. They need to be familiar with hardware used for embedded systems, technologies used for connecting embedded devices and know how to develop software required to run the system using the C programming language.

This online test requires candidates to answer multiple-choice and fill the blanks questions about hardware and software used in embedded devices, and to solve coding problems in C.

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Free Sample Questions for Embedded Systems and C Test

Our sample questions are free for companies to use on a trial plan. See more about our premium questions for paid plans below.

Bluetooth

3min
  -  
Easy 
  -  
MCA

Embedded Systems Wireless connection Public New

A car company plans to extend its car computer system to offer Bluetooth connectivity with the owner's mobile phone.

Select all correct statements about the properties of such a connection.

(Select all acceptable answers.)

Packet Distribution

5min
  -  
Easy 
  -  
MCA

Embedded Systems Critical section Mutex Semaphore Public New

The following part of the C code distributes packets from the input track to the output track:

void* take_and_put(void *arg)
{
    sem_wait(&semaphore);
    take();
    sem_post(&semaphore);

    pthread_mutex_lock(&mutex);
    put();
    pthread_mutex_unlock(&mutex);

    return NULL;
}

Where semaphore and mutex are initialized with:

// int sem_init(sem_t *sem, int pshared, unsigned int value);
sem_init(&semaphore, 0, 3);
// int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr);
pthread_mutex_init(&mutex, NULL);

If the function take_and_put is repeatedly called by a large number of threads, select correct statements about the take_and_put function.

(Select all acceptable answers.)

Quadratic Equation

10min
  -  
Easy 
  -  
CODE

C Arithmetic Public New

Implement the function find_roots to find the roots of the quadratic equation: ax2 + bx + c = 0. If the equation has only one solution, the function should return that solution as both roots. The equation will always have at least one solution.

The roots of the quadratic equation can be found with the following formula: A quadratic equation.

For example, the roots of the equation 2x2 + 10x + 8 = 0 are -1 and -4.

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Premium Questions for Embedded Systems and C Test

TestDome offers a premium questions library with 1000+ unique, hand-crafted questions whose answers can’t be found online. If you spot an answer somewhere online, we’ll give you a refund.

Question Names

These premium questions are included in this pre-built test and can be added to any multi-skill test. Please sign up for a paid plan to view the questions in detail.

Allocate String, Copy Bit, Shipping, Init Range, Read Write Execute, Segment, Square, Username, Internal Nodes, Battery, Increment, Strings Pointer, Count Letters, Descriptor, Run in Parallel, Increment, Max Sum, Tiles, Storing Data, Smart Home, Water Level Sensor, USB, Full Adder
Covered Skills

Testing of these skills is covered in this pre-built test because they’re closely related. On our paid plan, you can easily create your own custom multi-skill tests.

C Memory management Bit manipulation Arithmetic Strings Pointers Regex Algorithmic thinking Arrays Tree Language Pointer to pointer Higher order function Multithreading 2D array Pass by reference Embedded Systems Endianness Number system conversion IoT Wireless connection Stack memory allocation Computer bus Wired connection Boolean function Logic gates
Recommended Job Roles

These are the job roles that we recommend for the Embedded Systems and C online test.

Back-End Developer
C Developer
Embedded Software Engineer
Embedded Systems Engineer

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