Operating System Mcqs

Page No. 93

The phase change disk is coated with a material that can freeze into either _______ or ________ state.


acrystalline, solid


bice, amorphous


ccrystalline, liquid


dcrystalline, amorphous



Optical disks ______ magnetism.


ause


bdo not use


cmay use


dnone of the mentioned


View Answer do not use

The magneto-optic head flies ___________ the disk surface than a magnetic disk head does.


amuch farther from


bmuch closer to


cat the same distance as


dnone of the mentioned


View Answer much farther from

What is a magneto-optic disk?


aprimary storage


bsecondary storage


cremovable disk


dnone of the mentioned


View Answer removable disk

Floppy disks are examples of ____________


aprimary storage


bsecondary storage


ctertiary storage


dnone of the mentioned


View Answer tertiary storage

Tertiary storage is built with ____________


aa lot of money


bunremovable media


cremovable media


dsecondary storage


View Answer removable media

What are the various roles of protection?


aIt is used to detect errors which can prevent contamination of system


bIt is used used to accelerate a process


cIt is used to optimize system downtime


dNone of the mentioned



Which of the following statements are correct?
i) logical separation – in which process use different physical objects like separate printers
ii) cryptographic separation – in which process having different security requirement at different times
iii) Logical separation – In which users operate under illusion that no other processes exist
iv) cryptographic separation – In which processes conceal their data and computations


ai


bi and ii


cii and iii


diii and iv


View Answer iii and iv

Which of the following statements are correct?
i) Physical separation – in which process use different physical objects like separate printers
ii) Temporal separation – in which process having different security requirement at different times
iii) Physical separation – In which users operate under illusion that no other processes exist
iv) Temporal separation – In which processes conceal their data and computations


ai


bi and ii


cii and iii


diii and iv


View Answer i and ii

Which of the following statements are correct?
i) Physical separation – in which process use different physical objects like separate printers
ii) Physical separation – in which process having different security requirement at different times
iii) Logical separation – In which users operate under illusion that no other processes exist
iv) Logical separation – In which processes conceal their data and computations


ai


bi and iii


cii and iii


diii and iv


View Answer i and iii

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