Event: Job interview for Embedded S/W Designer. Interviewer: (question) Candidate: (answer) .. .. Interviewer: What is the best thing in VxWorks you like. 11+ Vxworks interview questions and answers for freshers and experienced. Vxworks technical job interview questions of various companies and by job. 5 Feb VxWorks Faqs . Yahoo Placement Papers · Sharepoint Tips And Tricks · Share Point Interview Questions and Answers · OOPS FAQS.
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How does watch dog timer works? What are message queues and pipes? How can u over come that? When a new task is created When ever context switching questkons When one task completes execution When kernel finds highest priority task than the current running task then it will preempt the current running task and allocate memory for the highest priority task.
Define Hard intfrview Soft real-time system. Host-resident symbol table for target. Explain how they work? What is diference between monolithic kernel and micro kernel?
But Q is full and semTake failure seems unlikely though I dont have a mechanism to check so. This way L cannot be preempted by M and thus the condition does not occur.
It is the responsibility of the programmer to deallocate it after its use. Differentiate between embedded system and real-time system. It stores some pages from the aux device to main memory and when a prog needs a page that is not on the main memory it fetches it from aux memory and replaces it in main memory.
VxWorks Interview Questions & Answers
A semaphore will never have a negative value. When it reaches 0, the task waiting on the semaphore is suspended.
Vx Works memory model? Why the variables in registers are not accessible? Have you ever lie on your resume? The producer process creates resources and signals the semaphore saying resource is available.
The WTX protocol is documented.
Host-resident symbol table for target. The i3 command in vxworks kernel give the process state and stack trace at that moment. Difference between unitasking and multitasking Unitasking A single task controls all components in loop Example: VxWorks runs in one mode.
Example, say questoons have four toilets with identical locks and keys. If two threads simultaneously attempt to update a global counter variable, it is possible for their operations to interleave in such way that the global state is not correctly modified.
So had a telnet and console sessions for the same board. The ownership of a mutex is with the single thread, meaning the same thread which has acquire the lock can only release it.
Posted by dhanu at 2: The result is an indefinite postponement until the thread holding the lock can finish and release it. How does synchronization occur in tasks? Page faults could mean either that the questjons has tried to access memory that it should not have access to, or that part of the application’s memory has been swapped out. What is interrupt latency After interrupt is generated to a task, time taken to save the context of the task in to its associated TCB and to restore the other tasks context to the cpu,and start executing ISR is called as interrupt latency.
What is interrupt latency? Allows “on the fly” development What does target server do?
Raytheon Interview Question: Priority of VxWorks threads i | Glassdoor
The changes made to the global variable in one task will not be reflected in other task What is priority inversion? Let us assume that two threads T1 and T2 each want to increment the value of a global integer by one. Vxworks can be scaled, unnecessary questoins can be easily excluded.
VxWorks runs in one mode. Rise in Demand for Talent Here’s how to train middle managers This is how banks are wooing startups Nokia to cut thousands of jobs.
This will prove helpful to you for your Interview purpose as well as for your academic preparation. TargetOS is fast, small, and preemptive. Total task priority levels in Vxworks.
Embedded Developers World: RTOS interview questions with answers
Onterview this stage the executable is generated. Task in Vx Works? Sometimes it can trigger watchdog timer and reset the system.
It has four process states. Task context contain Cpu registers, floating point register, stack etc. When one creates a bootable floppy, the kernel created has a sector tacked into the beginning of it. Counting semaphore is used in case of multiple resource.
Priority of VxWorks threads in an embedded system.
Vx works is good in handling interrupts. A project management facility. Target server provides host-based management of target resources needed by development tools: