JNTU
JNTU B.Tech IV REAL TIME SYSTEMS Previous Question Paper (July - 2023 - R16)
Note: i) Question paper consists of Part A, Part B. ii) Part A is compulsory, which carries 25 marks. In Part A, Answer all questions. iii) In Part B, Answer any one question from each unit. Each question carries 10 marks and may have a, b as sub questions.
Part A
What is fork and write command?
Answer
fork() is a system call used to create a new process by duplicating the calling process. The write() command is a system call used to write data from a buffer to a file descriptor, such as a file or a pipe.
What is the role of kernel?
Answer
The kernel is the core component of an operating system that manages system resources. Its primary roles include process management, memory management, device management, and providing an interface between hardware and software applications through system calls.
List the basic design principles in RTOS.
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Explain the importance of queues in RTOS.
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What is a Register?
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Define Dead lock.
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Determine the cause of the interrupt.
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What are the different types of exceptions?
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What is Vx works?
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What are the main challenges of choosing RTOS for an embedded system design?
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Part B
Write a Shell script that displays the number of readable, writable, and executable files in a specific directory.
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Explain the file I/O commands briefly.
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Explain any five Linux general file manipulation commands with examples.
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Explain about common shells used in UNIX systems.
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Explain how Round-Robin scheduling works with an illustrative example in RTOS.
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Explain about the different types of real time operating systems with examples.
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Describe semaphore functions for inter task communication.
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What is meant by a pipe? How does a pipe differ from a queue?
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Briefly explain about performance metrics for RTOS.
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Give a detailed description of signal control block and explain various operations of it.
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Give examples of I/O subsystems. Explain the use of asynchronous I/O.
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Describe in detail about spurious interrupts and how to handle them.
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List the three ways in which an RTOS handles the ISRs in a multitasking environment.
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Discuss about Interrupt Routines in RTOS Environment.
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What are exceptions and interrupts? Explain the applications of interrupts.
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Explain the inheritance protocol implementation in RT Linux.
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Explain the Case Study of Inter-Robot Communication in a Robot Orchestra.
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Explain the basic features of RTOS VxWorks.
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Explain the Case Study of Appliance Control by RT Linux System.
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