Basic Operating System MCQ
Basic Operating System MCQ
261. In soft real time tasks
- The dead line is always mandatory.
- The dead line is desirable butnot mandatory
- The results are indepedent of the time, when it took place.
- None of these
262. In real time scheduling: A: Static table driven approach, B: Static priority driven preemptive approach, C: Dynamic planning based approach; 1- A static analysis of feasible scheduler of dispatching is done and implemented. 2- A dispatching is done and assigns priorities to tasks. 3- Feasibility is determined at run time
- A-1, B-2, C-3
- A-2, B-3, C-1
- A-3, B-1, C-2
- None of these
263. Match the following I/O devices : A-Keybord, 1- Human readable, B- Disk and tape drives, 2- Communication, C- Moderms, 3-Machine readable
- A-1, B-3, C-2
- A-1, B-2, C-3
- A-3, B-2, C-1
- A-2, B-1, C-3
264. Arrange the following I/O device in increasing data rate Hard disk, Floppy disk, Key board
- Key Board, Floppy disk, Key board
- Floppy disk, Key, board, Hard disk
- Key board, Hard disk, Floppy disk
- Hard disk, Floppy disk, Key board
265. Resident set of process is
- Portion of a process that is actually in main memory at any time.
- Portion of a process that is actually in virtually memory at any time.
- A and b both true.
- None of these
268. Memory that is located on the disk either Hard or floppy is referred as
- Virtual memory
- Real memory
- Main memory
- None of these
269. The principle of locality states
- The program and data references within a process tend to cluster.
- The program and data references within a process do not tend to cluster.
- A process actually referred in virtual memory
- None of these
270. In Windows operating system the ________________ is the main screen area that one sees after he turn on a computer and log on to windows.
- Desktop
- Icons
- Taskbar
- None of these