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RTOS Question & Answers

November 16, 2022 By WatElectronics

This article lists 75 RTOS MCQs for engineering students. All the RTOS Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, or interviews, or professionals who would like to brush up on the fundamentals of RTOS.     

The RTOS is one type of operating system which supports real-time systems. It is categorized into four types they are hard, soft, firm, and non-real-time systems. In non-real-time systems, no deadlines have to be met.  

The benefits of OS structures are they are easier to debug and scale, distribution over multiple processors is simpler, and possible to dynamically load and unload modules. In contrast, the problems of an OS structure are overhead is high due to memory protection.  

Process management, inter-process communication, memory Management, and input and output management are the four main tasks of operating systems. The QNX and VxWorks are types of RTOS based on message-passing architecture and based on shared memory architecture.  

The QNX is a microkernel-based OS and VxWorks is a monolithic kernel-based OS. The QNX uses a priority-based pre-emptive scheduling algorithm for thread allocation and the VxWorks uses a priority-driven pre-emptive and round-robin scheduling algorithm. 

1). The operating system structures are categorized into ________________ types?

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2). What are the benefits of operating system structure?

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3). The process creation and process loading come under __________________ task of an OS?

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Read more about Inter-Process Communication
4). What is the standard form of RMS?

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5). The time needed to execute critical code during which no pre-emption may happen is known as _______________?

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6). Which one of the following is a monolithic kernel-based operating system?

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7). Which one of the following uses a priority based pre-emptive scheduling algorithm for thread allocation?

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8). Which one of the following operating system is deterministic?

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9). In __________________ the secondary storage is required to run large processes?

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10). What is the standard form of RTOS?

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11). Which one of the following OS is less efficient?

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12). In which one of the following only one CPU is needed?

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13). In which one of the following one process is executed at a time?

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14). Which one of the following takes more time to execute the process?

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15). Which one of the following helps in developing efficient programs?

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16). The multitasking is categorized into ______________________ types?

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17). Which one of the following is designed for performance?

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18). In which one of the following kernels run time is less?

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19). The size of data files is small/medium in _____________ RTOS?

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20). The real time operating system categorized into ____________________ types?

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RTOS MCQ for Quiz

21). Which one of the following helps in developing efficient operating systems?

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22). The data integrity is short term in __________________ real time system?

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23). The error detection is an autonomous in __________________ real time system?

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24). Which one of the following can’t use virtual memory?

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25). Which one of the following systems can be expressed as quantitative expression of time?

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26). The satellite tracking is an example for ________________ system?

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27). Which one of the following is easy to install and economical?

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28). In which one of the following operating system the local resources are managed by local OS?

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29). Which one of the following is an example of commercial RTOS?

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30). In _______________ real time system, the missing deadline has catastrophic results for the system?

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31). In ___________________ memory allocation, memory requests are made at run time?

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32). Which one of the following operating system is non-deterministic?

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33). In which one of the following kernels run time is high?

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34). The peak load performance is predictable in _______________ real time operating system?

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35). In which one of the following operating system the resources owned by local nodes?

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36). The websites and services are an example for _________________ RTOS?

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37). The air traffic control is an example for _________________ RTOS?

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38). What is the standard form of BSP?

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39). The batch processing jobs is an example for ________________ system?

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40). The create, query, get, and put are functions comes under __________________ function?

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RTOS MCQs for Interviews

41). Which one of the following uses a priority driven pre-emptive and round robin scheduling algorithms?

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42). Which one of the following takes less time to execute the process?

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43). Which one of the following is based on context switching concept?

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44). Which one of the following supports executions of multiple programs simultaneously?

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45). How many multitasking kernels does VRTX have?

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46). Which one of the following systems can be used in critical systems?

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47). In which one of the following operating systems managed by distributed OS?

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48). What is the standard form of RTEMS?

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49). In _______________ real time system, the system fails if deadline window is missed?

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50). In _______________ real time system, the deadlines may be missed and can be recovered?

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51). In which one of the following, more than one process can be executed at a time?

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52). Which one of the following has flat memory model?

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53). Which one of the following has low interrupt latency?

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54). What is the standard form of TCB?

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55). In which one of the following operating system, the priority inversion is a major issue?

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56). The page faults are categorized into ____________________ types?

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57). Which one of the following resources is dedicated to a particular process?

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58). Which one of the following is a major job of RTOS?

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59). Which one of the following resources is used by more than one process?

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60). In _______________ real time system, no deadlines have to be met?

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RTOS MCQ for Exams

61). How many states are needed to allow the CPU to schedule?

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62). What is the standard form of ISR?

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63). What is the standard form of EDF?

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64). Which one of the following is not large in memory?

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65). Which one of the following dedicated to single work?

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66). Which one of the following is designed for low memory consumption?

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67). Which one of the following supports executions of multiple ports of a single program simultaneously?

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68). Which one of the following is based on time sharing concept?

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69). In which one of the following, multiple CPUs are required?

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70). What are the problems of operating system structure?

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71). The synchronization and coordination come under __________________ task of an OS?

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72). What is the standard form of POSIX?

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73). In ___________________ memory allocation all memory allocated to each process at system start-up?

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74). Which one of the following is a microcontroller-based operating system?

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75). The secondary storage is usually limited and missing in __________________?

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