Practice Operating system - computer mcq Online Quiz (set-1) For All Competitive Exams
Q-1) With a segmentation, if there are 64 segments, and the maximum segment size is 512 words, the length of the logical address in bits is
(a)
(b)
(c)
(d)
Q-2) In a fixed head disk, the number of read/write head per track are
(a)
(b)
(c)
(d)
Q-3) User-Visible register Which of the following do not support GUI (Graphical User Interface)
(a)
(b)
(c)
(d)
Q-4) The number of process states recognized by UNIX
(a)
(b)
(c)
(d)
Q-5) Which of the following RAID level uses independent access technique and distributes the parity strips across all disks?
(a)
(b)
(c)
(d)
Q-6) In memory management :A-Fixed allocation policy, B-Variable allocation policy: 1-It gives a process a fixed number of frames in main memory within which to execute. 2-It allows the number of page frames allocated to a process to be varied over the life time of the process. 3-In it a number of allocated frames are decided at initial load time.
(a)
(b)
(c)
(d)
Q-7) The most efficient data set organization is
(a)
(b)
(c)
(d)
Q-8) Window 98 is a
(a)
(b)
(c)
(d)
Q-9) Process control block is also referred as
(a)
(b)
(c)
(d)
Q-10) OS/390 is a
(a)
(b)
(c)
(d)
Q-11) In process management of UNIX system, which of the following process states are running states in respect of whether the process is executing in user or kernel mode
(a)
(b)
(c)
(d)
Q-12) Priorities
(a)
(b)
(c)
(d)
Q-13) The wait operation
(a)
(b)
(c)
(d)
Q-14) The mail box and ports are examples of
(a)
(b)
(c)
(d)
Q-15) The transfer time in disk scheduling is
(a)
(b)
(c)
(d)
Q-16) In shared memory multi processor
(a)
(b)
(c)
(d)
Q-17) Dirty bit for a page in a page table
(a)
(b)
(c)
(d)
Q-18) The access time in disk scheduling is
(a)
(b)
(c)
(d)
Q-19) In disk scheduling, the seek time is
(a)
(b)
(c)
(d)
Q-20) Fragmentation of the file system
(a)
(b)
(c)
(d)