Top 20 Interview Questions And Answers On Embedded Systems |
Posted: January 17, 2023 |
What is an Embedded Systems?It is a blend of computer hardware and software specially designed to perform a specific function as an individual as well as within a large system. Multiple industries are highly relying on this system to perform essential tasks in order to enhance safety measures and to make life much easier. Areas where Embedded Systems get implemented are automobiles, cameras, digital watches, household appliances, vending machines and toys, mobile devices, and many more. In general, there are three elements of Embedded Systems which are- Hardware- It is a physical component which is physically connected to an Embedded Systems and encompasses a microcontroller-based integrated circuit, power supply, LCD display and much more. Software- Application software enables users to execute varieties of applications to be run on Embedded Systems just by making changes in the code installed in an Embedded Systems. Real-Time Operating System (RTOS)- The work of RTOS is to supervise the working of Embedded Systems and provide them mechanisms to let the processor run on the basis of schedule for controlling the effect of latencies. Top 20 Interview Question And Answers On Embedded Systems
Ans. It is defined as the time consumed by ISR to an interruption. It is inversely proportional to the interrupting event means, the lesser the latency response will be faster to the interrupting event.
Ans. It is a component of hardware which is responsible for identifying the vulnerabilities or malfunctioning in the software of the computer. It provides security to the system from being attacked by malicious software or threats which can alter the functioning of the system or can be dangerous to the system.
Ans. Errors can be avoided in several ways such as-
Ans. Interrupt latency can arise due to
Ans. There are multiple ways to swap 2 variables and they are-
Ans. It is the process of re-executing a function after an interruption during execution is known as a reentrant function. This function resumes from the point where it was left.
Ans. A thread is a portion of a procedure that shares information with other threads while containing its counters, registers, etc. On the other hand, a process is known as a program under execution which is running in separate memory spaces.
Ans. There are various cons of Embedded Systems-
Ans. ISR is an acronym for Interrupt Service Routines which is used at the time of interruption. These processes get stored at the memory location in the software.
Ans. It acts like a variable which is non-negative and can be shared between threads. It is used to solve complex and critical selection problems and obtain synchronisation in the process.
Ans. Pros of Embedded Systems are-
Ans. In the process of creating objects when developers use memory to help memory and somehow forget to free it before completing the program, this irresponsible act gives rise to a memory leak which further leads to reduced memory availability and frequent crashes of the application occur.
Ans. RISC stands for Reduced Instruction Set Computer. It is a kind of microprocessor architect which utilises a small and highly optimised set of instructions to perform tasks in a very less amount of time.
Ans. There are some common errors in an Embedded Systems and they are as follows-
Ans. Automotive Embedded Systems is a kind of computer system which is designed for electronic devices that manage the mechanism of data and devices.
Ans. An infinite loop is required for frequent processing or monitoring the state of the program. For example, in the case of any program state consistently being verified for exceptional errors that might happen recently in the run-time process such as memory outage or divide by zero, and much more.
Ans. It is the function that makes calls to itself before giving an ultimate result. And, these can be called in-line functions and the compiler allocates the memory space which is intended for the first call of the function.
Ans. Whenever the static function is declared within any specific module it is only concentrated in the same module and can only be accessed from it.
Ans. No, It is not possible because whenever an array is passed to a function, it gets converted into a ‘pointer’ internally. And pointers are always passed by the references.
Ans. It is a data structure which stores elemental information about a regular file, directory, or other file system object in a traditional Unix-style file system like UFS. Conclusion
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