multiple choice questions of Environmental courseFull description
Full description
Operating Systems 1.Which of the following is responsible for the management and coordination of activities and sharing of resources of computer A)Application A)Application Software B) Mother Board C) Operating Sstem !) "AM Ans# C
$. When a computer is %rst turned on or restarted& a special tpe of absolute loader is e'ecuted& called a A) Compile Compile and (o loader B) Boot loader C) Bootstrap loader !) "elating "elating loader Ans# C . Which of the following is not a part of operating sstem* A) supervis supervisor or B) perfor performanc mance e monito monitorr C) +ob,con +ob,contr trol ol progra program m !) input-out input-output put control program Ans# B .Moving /rocess from main memor to dis0 is called A) scheduling B)cachingC) swapping !) spooling Ans# C . 2nterval between the time of submission submission and completion of the +ob is called A) Waiting time B) 3urnaround urnaroun d time C) 3hroughput 3hroughpu t !) "espons "esponse e time Ans# B 4. A scheduler scheduler which which selects processes from secondar storage device is called A) Short term scheduler schedul er.. C) Medium term scheduler. schedu ler. Ans# C
B) 5ong term scheduler. schedul er. !) /rocess scheduler. schedu ler.
6. 7obs which are admitted admitted to the sstem for for processing is called A) long,term scheduling B) short,term scheduling C) medium,term scheduling !) 8ueuing Ans# A 9. 3he scheduling in which C/: is allocated to the process with least C/:,burst time is called A) /riorit Scheduling B) Shortest +ob %rst Scheduling C) "ound "obin Scheduling !) Multilevel ;ueue Scheduling Ans# B
<. /rogram =preemption> is A) ?orced de allocation of the C/: from a program which is e'ecuting on the C/:. B) "elease of C/: b the program after completing its tas0. C) ?orced allotment of C/: b a program to itself. !) A program terminating itself due to detection of an error. Ans# A
1@. 3hroughput of a sstem is A)
umber of programs processed b it per unit time
B)
umber of times the program is invo0ed b the sstem
C)
umber of re8uests made to a program b the sstem
!)
one of the above
Ans# A
11. 2n interactive environments such as time,sharing sstems& the primar re8uirement is to provide reasonabl good response time and in general& to share sstem resources e8uitabl. 2n such situations& the scheduling algorithm that is most popularl applied is DDDDDDDD. A) Shortest,+ob ?irst B) Elevator C) "ound,"obin!) ?irst,Come,?irst,Serve. Ans# C
1$. Which of the following is not a fundamental process state A)read B)terminated C)e'ecuting !)bloc0ed Ans# !
1.Which amongst the following is not an advantage of !istributed sstems* A)"eliabilit B)2ncremental growth C)"esource sharing !)one of the above Ans# A
1.3he turn,around time of a user +ob is the
A) time since its submission to the time its results become available B)time duration for which the C/: is allotted to the +ob C)total time ta0en to e'ecute the +ob !)time ta0en for the +ob to move from assembl phase to completion phase. Ans# C 1. 3he Occurrence of event is usuall signaled b A) boot strap program B) 2nterrupt C) "AM !) 5in0er Ans# B 14. 2f "ound "obin is used with a time 8uantum of 1 second& the turnaround time for 7ob $ will be
A) 1 second B) $ seconds C)1 hour !) 1 hour& 1 second Ans# B 16. ?or multiprogramming sstems& most :2F operating sstems use A) swapping B) demand paging C) either A or B !)neither A nor B Ans# C 19. /rocess State is a part of A) /rocess Control bloc0 B) 2node C)?ile Allocation 3able !) one of the above Ans # A 1<. 3he 0ernel 0eeps trac0 of the state of each tas0 b using a data structure called DD A) /rocess control bloc0 B):ser control bloc0 C)Memor control bloc0 !)one of the above Ans # A $@. 2n a multithreaded environment DDDDDDD. A) Each thread is allocated with new memor from main memor. B Main thread terminates after the termination of child threads. C) Ever process can have onl one thread. !) one of the above Ans# B $1. C/: Scheduling is the basis of DDDDDDDDD operating sstem A)Batch B) "eal time
C)Multiprogramming !)Monoprogramming Ans# C $$.A ma+or problem with priorit scheduling is DDDDDDDDD. A )!e%nite bloc0ing B )Starvation C )5ow priorit !) one of the above Ans# B $.Saving the state of the old process and loading the saved state of the new process is called DDDDDDDD. A) Conte't Switch B)State C) Multi programming !)one of the above Ans # A $. 2n /riorit Scheduling a priorit number Ginteger) is associated with each process. 3he C/: is allocated to the process with the highest priorit Gsmallest integer H highest priorit). 3he problem of& Starvation * low priorit processes ma never e'ecute& is resolved b DDDDDDDDDD. A) 3erminating the process. B) Aging C) Mutual E'clusion !) Semaphore Ans # B $. which of the following is not a model of multithreading A) Man,to,one B) One,to,one C) Man,to,man !)One,to,Man Ans#! $4. Bene%ts of multithreading A) "esource sharing B) "esponsiveness C) utiliIation of multipurpose architectures !)All of the above Ans# ! $6. Which sstem call is used to create a separate& duplicate process*
A) for0G) B) e'ecG) C)cloneG) !) Both A and B Ans# A $9. Communication between the user thread librar and the 0ernel is 0nown as A) Signal handling B) Scheduler activation C) Multithreading !) SnchroniIation Ans# B $<. "eason for providing an environment that allows process cooperation A) 2nformation sharing B) Computational speed up C) Modularit !) All of the above Ans#! @. ?undatamental model of interprocess communication A) Shared memor B) Message passing C) both A J B !) one of the above Ans# C
