Top 550+ Solved Operating System (OS) MCQ Questions Answer
Q. What is the disk bandwidth?
a. the total number of bytes transferred
b. total time between the first request for service and the completion on the last transfer
c. the total number of bytes transferred divided by the total time between the first request for service and the completion on the last transfer
d. none of the mentioned
Q. Whenever a process needs I/O to or from a disk it issues a
a. system call to the cpu
b. system call to the operating system
c. a special procedure
d. all of the mentioned
Q. If a process needs I/O to or from a disk, and if the drive or controller is busy then
a. the request will be placed in the queue of pending requests for that drive
b. the request will not be processed and will be ignored completely
c. the request will be not be placed
d. none of the mentioned
Q. Magnetic tape drives can write data at a speed disk drives.
a. much lesser than
b. comparable to
c. much faster than
d. none of the mentioned
Q. On media that use constant linear velocity (CLV), the is uniform.
a. density of bits on the disk
b. density of bits per sector
c. the density of bits per track
d. none of the mentioned
Q. Which of the following is not a multitasking operating system?
a. windows
b. linux
c. win nt
d. dos
Q. You should choose Sleep option when
a. the computer is tired after working for the whole day
b. you are leaving for a very short time and want to resume you work shortly
c. whencomputer gets hanged frequently. let it sleep for some time
d. you finish working and going to bed
Q. The .... displays the name of every computer user on the computer
a. wish list screen
b. command screen
c. welcome screen
d. none of the above
Q. The category of software most appropriate for controlling the design and layout of complex document like newsletters and brochure is:
a. word processing
b. computer aided design
c. web page authoring
d. desktop publishing
Q. Which one is not a system tool?
a. backup
b. disk defragment
c. virus scanning
d. all of the above
Q. The memory which allocates space for DOS and application is called
a. expanded memory
b. cache memory
c. virtual memory
d. conventional memory
Q. The operating system creates ... from the physical computer
a. virtual space
b. virtual computer
c. virtual device
d. none
Q. The operating system creates _____ from the physical computer
a. virtual space
b. virtual computers
c. virtual device
d. none
Q. Which menu bar selection would you access to openfile?
a. option
b. help
c. view
d. none of above
Q. Which mode loadsminimal set of drivers when starting Windows?
a. safe mode
b. normal mode
c. vga mode
d. network support mode