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