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UGC-NET 2018: (Operating System) SpeedTest Quiz 2
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Question 1
The name of the transaction file shall be provided by the operator and the file that contains the edited transactions ready for execution shall be called
Question 2
The Unix Kernel maintains two key data structures related to processes, the process table and the user structure. Which of the following information is not the part of user structure?
Question 3
Consider the following justifications for commonly using the two level CPU scheduling:
I. Its is used when memory is too small to hold all the ready processes.
II. Because its performance is same as that of FIFO.
III. Because it facilitates putting some set of processes into memory and a choice is made from that.
IV. Because it does not allow to adjust the set of in-core processors.
I. Its is used when memory is too small to hold all the ready processes.
II. Because its performance is same as that of FIFO.
III. Because it facilitates putting some set of processes into memory and a choice is made from that.
IV. Because it does not allow to adjust the set of in-core processors.
Question 4
In round robin CPU scheduling as time quantum is increase the average turn around time
Question 5
A system has four processes and five-allocatable resources. The current allocation and maximum needs are as follows:
The smallest value of x for which the above system in safe state is _________.
The smallest value of x for which the above system in safe state is _________.
Question 6
Which of the following statement is wrong?
I. 2-phase locking protocol suffer from dead lock.
II. Time stamp protocol suffer from more aborts.
III. A block hole in a DFD is a data store with only inbound flows.
IV. Multivalued dependency among attribute is checked at 3 NF level.
V. An entity-relationship diagram is a tool to represent event model.
I. 2-phase locking protocol suffer from dead lock.
II. Time stamp protocol suffer from more aborts.
III. A block hole in a DFD is a data store with only inbound flows.
IV. Multivalued dependency among attribute is checked at 3 NF level.
V. An entity-relationship diagram is a tool to represent event model.
Question 7
A disk drive has 100 cylinders, numbered 0 to 99. Disk requests come to the disk driver for cylinders 12, 26, 24, 4, 42, 8 and 50 in that order. The driver is currently serving a request at a cylinder 24. A seek takes 6 msec per cylinder moved. How much seek time is needed for shortest seek time first (SSTF) algorithm?
Question 8
A thread is usually defined as a “light weight process” because an operating system (OS) maintains smaller data structures for a thread than for a process. In relation to this, which of the following is TRUE?
Question 9
Which of the following conditions does not hold good for a solution to a critical section problem?
Question 10
Dining Philosopher’s problem is a:
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GATE & PSU CSGeneralApr 8GATE & PSU CS
