Computer Science Set-5 | Question Paper Hub

Question 1

The principle of locality of reference justifies the use of-

A. Virtual MemoryB. InterruptsC. Main memoryD. Cache memory

Question 2

Which command divides the surface of the blank disk into sectors and assign a unique address to each one

A. VerB. FormatC. FatD. Chkdsk

Question 3

What is the first step in performing an operating system upgrade ?

A. Partition the driveB. Format the driveC. Backup critical dataD. Backup old operating system

Question 4

It is necessary to consult the following while drawing up requirement specification

A. only top managersB. only top and middle managementC. only top, middle and operational managersD. top, middle and operational managers and also all who will use the system

Question 5

A page fault occurs-

A. when the page is not in the memoryB. when the page is in the memoryC. when the process enters the blocked stateD. when the process is in the ready state

Question 6

Which of the following is a criterion to evaluate a scheduling algorithm?

A. CPU Utilization: Keep CPU utilization as high as possible.B. Throughput: number of processes completed per unit time.C. Waiting Time: Amount of time spent ready to run but not running.D. All of the above

Question 7

Super computers typically employ –

A. Real time Operating systemB. Multiprocessors OSC. desktop OSD. None of the above

Question 8

A process is starved-

A. if it is permanently waiting for a resourceB. if semaphores are not usedC. if a queue is not used for schedulingD. if demand paging is not properly implemented

Question 9

Which command is used to copy files to and from a backup devices

A. cpioB. dfC. formatD. du

Question 10

Default option to store active directory-

A. C:\winnt\NTDSB. C:\windows\NTDSC. C:\winnt\system32\NTDSD. None

Question 11

Which of the following disk scheduling techniques has a drawback of starvation ?

A. SCANB. SSTFC. FCFSD. LIFO

Question 12

How can we check the last access time of the file

A. ls –lB. ls –laC. ls –luD. ls –lc

Question 13

Question Image

What would be the value of x after execution of the following statements?

A. InvalidB. 17C. 107D. 10a

Question 14

Null character is represented by

A. \nB. \0C. \oD. \e

Question 15

Situations where two or more processes are reading or writing some shared data and the final results depends on the order of usage of the shared data, are called –

A. Race conditionsB. Critical sectionC. Mutual exclusionD. Dead locks

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