(i) The interval from of time of submission of a process to the time of completion is termed as-
(a) waiting time
(b) turn around time
(c) response time
(d) throughout
(ii) Time quantum is defined in ___________ scheduling algorithm
(a) SJF
(b) FCFS
(c) Round Robin
(d) Priority
(iii) The number of process completed per unit time is known as-
(a) throughput
(b) output
(c) litency
(d) efficiency
(iv) The process control block is ___________
(a) process type variable
(b) a secondary storage section
(c) data structure
(d) a block in memory
(v) The degree of multi programming is___________
(a) the number of process executed per unit time
(b) the number of process in the ready queue
(c) the number of process in the I/O queue
(d) the number of process in memory
(vi) ______ is the concept in which process is copied into main memory from the secondary memory according to the requirement
(a) paging
(b) demand paging
(c) segmentation
(d) swapping
(vii) Standard set of functions through which interacts with kernel is defined by
(a) system libraries
(b) kernel code
(c) compilers
(d) utility program
(viii) The circular wait condition can be prevented by-
(a) defining a linear ordering of resources types
(b) using thread
(c) using pipes
(d) all of the mentioned above
(ix) Physical memory is broken into fixed-size blocks called-
(a) pages
(b) frames
(c) backing store
(d) none of these
(x) The ____ table contains the base address of each page in physical memory
(a) process
(b) page
(c) memory
(d) frame
(xi) Paging increase the _______ time
(a) context switch
(b) waiting
(c) execution
(d) all of these
(xii) To access the services of operating system, the interface is provided by the-
(a) API
(b) library
(c) System calls
(d) Assembly instruction
(xiii) Which is the first program run on a computer when the computer boots up?
(a) system software
(b) system operations
(c) operating system
(d) none of these
(xiv) A thread is also called a___________
(a) light weight process
(b) heavy weight process
(c) process
(d) none of these
(xv) CPU fetches the instruction from memory according to the value of-
(a) program counter
(b) status register
(c) instruction register
(d) program status word
(xvi) Which of the following is not a CPU scheduling algorithm
(a) LRU
(b) OPTIMAL
(c) FIFO
(d) Round Robin
(xvii) First to LINUX kernel which supports the SMP hardware was
(a) Linux 0.1
(b) Linux 1.0
(c) Linux 1.2
(d) Linux 2.0
(xviii) If a page no is not found in the TLB then it is known as a
(a) TLB miss
(b) Buffer miss
(c) TLB hit
(d) none of above
(xix) With multi programming _________ is used productively
(a) time
(b)space
(c) money
(d) all of these
(xx) A________ is a collection of electronics that can operate a part a bus or a device.
(a) controller
(b) driver
(c) host
(d) bus
1.What are the differences between batch O.S and multi programming.
2. What is process and process control block ?
3. Differentiate demand paging and swapping in brief ?
4. With a neat diagram explain in brief the various state of a process .
5. Define Linux virtualization .
7. What is deadlock ? How deadlock are detected ?
8. Consider the reference string :
7,0,1,2,0,3,0,4,2,3,0,3,2,1,2,0,1,7,0 for a memory with three frames . Trace FIFO , optimal and LRU page replacement algorithm .
i) LRU
ii) LRU-Approximate page replacement uses the reference string.
9. Assume the following jobs have in the arrive order 1,2,4 and 5
job Arviral time Burst time priority
1 0 15 2
2 2 3 1
3 5 5 5
4 6 8 4
5 7 12 3
Give giantt chart and calculate average turn around and waiting time for
(i) FCFS
(ii) SRTF and preemtive priority algorithm .
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{Other links
OS
https://diplomaforcse.blogspot.com/2019/08/previous-year-question-for-computer_26.html
CPTC
https://diplomaforcse.blogspot.com/2019/08/previous-year-question-for-computer_28.html
ISP: -
https://diplomaforcse.blogspot.com/2019/08/previous-year-question-for-computer_31.html
NOTES of COA
(unit-1): -
https://diplomaforcse.blogspot.com/2019/09/notes-for-computer-science-engineering.html
NOTES of ISP (unit-4): -
https://diplomaforcse.blogspot.com/2019/09/notes-for-computer-science-engineering_21.html
Notes
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}
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