A2 Test CS MMD

Select the true statements about operating systems:

• A computer can only have one OS

• The OS manages memory, storage, security, printing and other useful functions of the system

• The OS provides a user interface

• All OSes allow you to use multiple programs at once

This image shows...

• Memory paging

• Memory segmentation

• Distributed processing

• Virtual memory

This image shows...

• Memory paging

• Memory segmentation

• Distributed processing

• Virtual memory

Select the true statements about memory paging:

• Processes are split into equal sized frames

• A page table is used to record all the pages

• Unused pages are swapped out of main memory and into virtual memory

• Processes are split into variable sized frames

Segmentation:

• Splits processes into variable sized pieces

• Splits processes into set sized pieces

• Keeps processes together in RAM

• Places processes wherever there is space in RAM

• Can cause stack overflows

The role of scheduling is...

• To make sure tasks get as much time as they need on the CPU

• To make sure that all tasks get time on the processor and respond in a reasonable time

• To make sure that the user does not have to wait for processes to run

• To prevent the user from crashing the computer

An OS which you would use in day-to-day life on a normal school computer is a...

• Embedded

• Real Time

• Distributed

• Multi-Tasking

• Multi-User

For a very large and complex system which needs multiple processors, you would use a _______________ OS:

• Embedded

• Real Time

• Distributed

• Multi-Tasking

• Multi-User

For a system which needs a guaranteed response rate, you would use a _______________ OS:

• Embedded

• Real Time

• Distributed

• Multi-Tasking

• Multi-User

For a simple system with very limited processing power, you would use a _______________ OS:

• Embedded

• Real Time

• Distributed

• Multi-Tasking

• Multi-User