operating system set 3 Detailed Explanation And More Example

Question : 1

The term paging refers to

a) boosting up the priority of a process in multilevel of queues without feedback

b) gradually increasing the priority of jobs that wait in the system for a long time to remedy infinite blocking

c) keeping track of the time a page has been in memory for the purpose of LRU replacement

d) letting job reside in memory for a certain amount of time, so that the number of pages required can be estimated accurately

Question : 2

In virtual memory systems, dynamic address translation

a) is the hardware necessary to implement paging

b) stores pages at a specific location on disk

c) is useless when swapping is used

d) is the part of the operating system paging algorithm

Question : 3

Execution time

a) where the process will reside in memory, then absolute code can be generated

b) where the process will reside in memory, then the compiler must generate relocatable code

c) if the process can be moved during its execution from one memory segment to another

d) all of the above

Question : 4

In 16 G byte disk with 512-bit block, the bit table requires

a) 1 M bytes

b) 2 M bytes

c) 3 M bytes

d) 4 M bytes.

Question : 5

The disk and tape devices are referred as

a) Block oriented I/O devices

b) Stream oriented I/O devices

c) Logical I/O devices

d) None of these

Question : 6

A disk scheduling algorithm in an operating system causes the disk arm to seek back and forth across the disk surface servicing all requests in its path, based on

a) First Come First Served

b) Shortest Seek Time First

c) Sean

d) None of these