operating system set 1 Detailed Explanation And More Example

Question : 1

A critical section is a program segment

a) which should run in a certain specified amount of time

b) which avoids deadlocks

c) where shared resources are accessed

d) which must be enclosed by a pair of semaphore operations.

Question : 2

The resident set of process is

a) A process that are actually in main memory at anytime.

b) A process that are actually in virtual memory at any time.

c) A process that are actually in disk.

d) None of these.

Question : 3

In file management, the primary interface of computer system with external environment is done through

a) Device drivers

b) Basic file system

c) Basic I/O supervisor

d) Logical I/O.

Question : 4

Multiprogramming systems

a) are easier to develop than single programming systems

b) execute each job faster

c) execute more jobs in the same time period

d) are used only one large mainframe computers

Question : 5

In multi processor scheduling, independent parallelism indicates

a) There is synchronization among processes at gross level.

b) There is no explicit synchronization among processes.

c) A parallel processing or multi tasking is done within a single application.

d) None of these.

Question : 6

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 static analysis of feasible schedules of dispatching is done and assigns priorities to tasks. 3- Feasibility is determined at run time.

a) A - 1, B - 2, C - 3

b) A - 2, B - 3, C - 1

c) A - 3, B - 1, C - 2

d) None of these.