Operating System MCQs
1K+ questions with answers
RAID level ______ is also known as bit interleaved parity organisation.
A single parity bit can be used for ____________
RAID level ______ is also known as memory style error correcting code(ECC) organization.
RAID level 3 does not have _________ as in RAID level 1.
Tertiary storage is built with ____________
Floppy disks are examples of ____________
What is a magneto-optic disk?
The magneto-optic head flies ___________ the disk surface than a magnetic disk head does.
Optical disks ______ magnetism.
The phase change disk is coated with a material that can freeze into either _______ or ________ state.
A tape holds _______ data than optical or magnetic disk cartridge.
Random access to tape is _______ a disk seek.
A typical tape drive is ________ a typical disk drive.
The surface area of tape is ________ the surface area of a disk.
In domain structure what is Access-right equal to?
What is meaning of right-set?
What is Domain?
What does the access matrix represent?
What are the three additional operations to change the contents of the access-matrix?
Who can add new rights and remove some rights?
Which two rights allow a process to change the entries in a column?
Which is an unsolvable problem in access-matrix?
Which of the following objects require protection?
What is ‘separation’ in security of Operating systems?
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
What are the various roles of protection?
Which of the following objects require protection?
Which principle states that programs, users and even the systems be given just enough privileges to perform their task?
_______ is an approach to restricting system access to authorized users.
For system protection, a process should access _____________
The protection domain of a process contains _____________
If the set of resources available to the process is fixed throughout the process’s lifetime then its domain is _____________
Access matrix model for user authentication contains _____________
For a domain _______ is a list of objects together with the operation allowed on these objects.
Which one of the following is capability based protection system?
In UNIX, domain switch is accomplished via _____________
When an attempt is to make a machine or network resource unavailable to its intended users, the attack is called _____________
The code segment that misuses its environment is called a _____________
The internal code of any software that will set of a malicious function when specified conditions are met, is called _____________
The pattern that can be used to identify a virus is known as _____________
Which one of the following is a process that uses the spawn mechanism to revage the system performance?
What is a trap door in a program?
File virus attaches itself to the _____________
Multipartite viruses attack on _____________
In asymmetric encryption _____________
What is true regarding ‘Fence’?
What is not true regarding ‘Fence’?
What is correct regarding ‘relocation’ w.r.t protecting memory?
How can fence and relocation be used together?