operating system set 4 Detailed Explanation And More Example

Question : 1

Given three switch processes, when they occur match them (1) Clock Interrupt A- The processor encounters a virtual memory address reference for a word that is not in the main memory. (2) I/O Interrupt B- The operating system determines whether the currently running process has been executed for the maximum allowable time slice. (3) Memory fault C- The operating system determines the I/O action that occurs.

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

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

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

d) 1-C, 2-B, 3-A.

Question : 2

In UNIX process management, the user processes runs in

a) Kernel mode only

b) Kernel and user mode both

c) User mode only

d) None of these.

Question : 3

In micro kernel architecture following is false.

a) Intersection takes place only between adjacent layers.

b) Intersection takes place via micro kernel.

c) It supports portability.

d) It supports object-oriented operating system.

Question : 4

For Load-time dynamic linking

a) Load module (application module) to be loaded is read into memory.

b) Some of the linking is postponed until execution time.

c) External references to target modules remain in the loaded program.

d) None of these.

Question : 5

High paging rate

a) may cause high I/O rate

b) keeps the systems running well

c) is a symptom of too much processor activity

d) always creates a slow system

Question : 6

Real-time systems are

a) primarily used on mainframe computers

b) used for monitoring events as they occur

c) used for program development

d) used for real-time interactive users.