1) Data reside in file on disk under DOS environment, which of the following file name is invalid ?
1 OSCONCEPTS.doc
2 RAW
3 COMPAQ.BOOK
4 JUMPSTART.BOS
Right Ans ) 3
22) In Priority Scheduling a priority number (integer) is associated with each process. The CPU is allocated to the process with the highest priority (smallest integer = highest priority). The problem of, Starvation ? low priority processes may never execute, is resolved by __________.
1 Terminating the process.
2 Aging
3 Mutual Exclusion
4 Semaphore
Right Ans ) 2
23) CPU Scheduling is the basis of _________ operating system
1 Batch
2 Real time
3 Multiprogramming
4 Monoprogramming
Right Ans ) 3
24) A major problem with priority scheduling is _________.
1 Definite blocking
2 Starvation
3 Low priority
4 None of the above
Right Ans ) 2
25) ________ scheduler selects the jobs from the pool of jobs and loads into the ready queue.
1 Long term
2 Short term
3 Medium term
4 None of the above
Right Ans ) 1
26) Which directory implementation is used in most Operating System?
1 Single level directory structure
2 Two level directory structure
3 Tree directory structure
4 Acyclic directory structure
Right Ans ) 3
27) Saving the state of the old process and loading the saved state of the new process is called ________.
1 Context Switch
2 State
3 Multi programming
4 None of the above
Right Ans ) 1
28) The term " Operating System " means ________.
1 A set of programs which controls computer working
2 The way a computer operator works
3 Conversion of high-level language in to machine level language
4 The way a floppy disk drive operates
Right Ans ) 1
29) Resource locking ________.
1 Allows multiple tasks to simultaneously use resource
2 Forces only one task to use any resource at any time
3 Can easily cause a dead lock condition
4 Is not used for disk drives
Right Ans ) 2
30) A thread
1 is a lightweight process where the context switching is low
2 is a lightweight process where the context swithching is high
3 is used to speed up paging
4 none of the above
Right Ans ) 1
1) Consider the two statements.
(A) A network operating system, the users access remote resources in the same manner as local resource.
(B) In a distributed operating system, the user can access remote resources either by logging into the appropriate remote machine or transferring data from the remote machine to their own machine. Which of the statement is true?
1 A true, B false
2 B true, A false
3 Both A and B false
4 Both A and B true
Ans ) 3
2) Using Priority Scheduling algorithm, find the average waiting time for the following set of processes given with their priorities in the order: Process : Burst Time : Priority respectively .
P1 : 10 : 3 ,
P2 : 1 : 1 ,
P3 : 2 : 4 ,
P4 : 1 : 5 ,
P5 : 5 : 2.
1 8 milliseconds
2 8.2 milliseconds
3 7.75 milliseconds
4 3 milliseconds
Ans ) 2
3) Which of the following will determine your choice of systems software for your computer ?
1 Is the applications software you want to use compatible with it ?
2 Is it expensive ?
3 Is it compatible with your hardware ?
4 Both 1 and 3
Right Ans ) 4
Associate Ans) 4
4) What is a shell ?
1 It is a hardware component
2 It is a command interpreter
3 It is a part in compiler
4 It is a tool in CPU scheduling
Ans ) 2
5) The operating system manages ________.
1 Memory
2 Processor
3 Disk and I/O devices
4 All of the above
Ans ) 4
6) The Hardware mechanism that enables a device to notify the CPU is called __________.
1 Polling
2 Interrupt
3 System Call
4 None of the above
Ans ) 2
7) ___________ begins at the root and follows a path down to the specified file
1 Relative path name
2 Absolute path name
3 Standalone name
4 All of the above
Ans ) 2
8) Process State is a part of
1 Process Control block
2 Inode
3 File Allocation Table
4 None of the above
Ans ) 1
9) Virtual Memory is commonly implemented by __________.
1 Segmentation
2 Swapping
3 Demand Paging
4 None of the above
Ans ) 3
10) Virtual memory is __________.
1 An extremely large main memory
2 An extremely large secondary memory
3 An illusion of extremely large main memory
4 A type of memory used in super computers.
Ans ) 3
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