ISRO Scientist or Engineer Computer Science 2009

Occurs when a program accesses an available page of memory

is an error in a specific page

is a reference to a page belonging to another program

Occurs when a program accesses a page not currently in memory

Better disk throughput but poorer disk space utilization

Better disk throughput and better disk space utilization

Poorer disk throughput but better disk space utilization

Poorer disk throughput and poorer disk space utilization

An ISR is invoked on completion of I/O in synchronous I/O but not in asynchronous I/O

In both synchronous and asynchronous I/O an ISR (Interrupt Service Routine)is invoked after completian of the I/O

Aprocess making a synchronous I/O call waits until I/O is complete, but a process making an asynchronous I/O call does not wait for completion of the I/O

In the case of synchronous I/O, the process waiting forthe completion of I/O is woken up by the ISR that is invoked after the completion of I/O

1

2

3

4

Size of the process

The I/O bursts of the process

The CPU bursts of the process

The size of the time quantum

15

9

10

13

12.8 ms

11.8 ms

10.8 ms

09.8 ms

$$ -2^{n - 1} to (2^{n - 1} - 1) $$

$$ -(2^{n - 1} - 1) to (2^{n - 1} - 1) $$

$$ -2^{n - 1} to 2^{n - 1} $$

$$ -(2^{n - 1} + 1) to (2^{n - 1} - 1) $$

$$BC'D’ + A’C’D + AB'D$$

$$ABC’ + ACD + B’C’D$$

$$ACD’ + A’BC’ + AC'D’$$

$$A’BD + ACD’ + BCD'$$

Independent of one variabie

Independentof two variables

Independentof three variables

Dependent on all the variables