7.real time operating systems
1)The processor in the system runs in__________________modes when it is using operating system.
Ans)two
2)The middle layer between application software and system hardware is____________
Ans)OS
3)a process descriptor used by the process manager is_____________-
Ans)PCB
4)A unit of the OS which is the entity responsible for controlling a process execution is _______________
Ans)process manager
5)A ________________In the system interrups the system with each tick,which accures a number times in one sec.
Ans)read_time clock
6)A process sends a requeast to the driver functions by an interrupt using _____________
Ans)SWI
7)The slow level ISR(SLISR) is called as interrupt service thread(IST) in__________
Ans)Windows CE
8)The _____________-can only post the messages for the RTOS and parameters for the tasks.
Ans)ISR
9)A RTOS which has predictable performance with no deadlines miss ,even in case of sporadic tasks is______________RTOS.
Ans)hard
10)A schedule in which each ready task runs in turn only nin a cyclic queue for a limited time slice Tslice is called______________
Ans)round robbin time slicing shedule
11)A section in a system called ,where there is no preemption by either ______________or higher priority task is called critical section.
Ans)ISRS
12)The OS _____________issue is a critical issue.
Ans)security
13)A deadline is a period in which a task must _____________
Ans)finish
14)The processor goes into a stop state when it receives a __________________instruction.
Ans)stop
15)An interrupt on a clock click is called _____________
Ans)sys CLKI ntr
16)RTOS stands for_________
Ans)real time operating system
17)What is CPU load?
Ans)The computational over head given to the CPU by task/task is called CPU load.
18)What is portability?
Ans)An operating system should be able to run on various present and upcoming platforms.
19)API stand for______________
Ans)application program interface
20)What is the purpose of open()?
Ans)it is used to open and creat a file.
8.PROGRAMMING WITH RTOS_2
1)A Musical device communicates data to one another using a protocol_______________
Ans) Musical instrument digital interface
2)The class contains__________________field.
Ans)file type
3)A vehicle can be holded in steady state during drive using _________
Ans)Acceleretor pedal
4)The two objects of ISR are ______and_______
Ans)ISR-Throttle control,ISR-Brake control
5)A function which sends request for password on verification of host when sem PW=1 is__________
Ans)Task-PW
6)Mobile phone with small screen uses___________keypad.
Ans)T9
7)In key-state representation,first character inside the bracket represent whether the key is_______or________
Ans)Active,inactive
8)An object of ________are used for posting to the ISRS and tasks.
Ans)Message queues
9)An application layer presents in__________architecture.
Ans)software
10)A key that is used to select menu item options to start a new task or action is called____________
Ans)command key
11)Transport of a MIDI files can be over___________
Ans)Bluetooth,High speed serial USB,Firewise
12)A car safely is provided by __________and_________
Ans)Remote key entry,immobilizer unit
13)Mobile phone with a large touch screen uses __________keypad..
Ans)Virtual
14)A line or symbol displayed on the screen to guide a user to select the button is called_________
Ans)Cursor
15)MISRA-C version 2(2004)specifies _______rules for coding and gave a new structure for C.
Ans)141
16)MIDI stands for___________
Ans)Musical instrument digital interface
17)What is class?
Ans)A class is defined as a logical group employing both fields (attributes)and
Methods (operation)of a particular task.
18)What is object?
Ans)An object is defined as an instance of a class.
19)ACC stands for________
Ans)adaptive cruise control system
20)TTP stands for_____________
Ans)time triggered protocol.
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